НОРМАЛЬНО ЗАКРЫТЫЙ КЛАПАН В СВОБОДНОМ СОСТОЯНИИ

Изобретение относится к медицинской технике. Клапанная система для управления потоком текучей среды внутри хирургической кассеты содержит корпус с впускным каналом для текучей среды и выпускным каналом для текучей среды, где два канала соединены сквозным отверстием, и эластомерную бобышку клапана, расположенную концентрично относительно сквозного отверстия. При статических условиях край с нижней стороны бобышки клапана образует уплотняющую поверхность клапана, которая поддерживает контакт с краем сквозного отверстия вследствие растяжения бобышки клапана относительно сквозного отверстия. Причем край сквозного отверстия образует седло клапана. Применение данного изобретения позволит управлять потоком жидкостей внутри кассеты, обеспечивая повышенную функциональность, надежность, чистоту и безопасность при работе с клапанной системой. 7 з.п.ф-лы, 5 ил.

КЛАПАН ДЛЯ ТЕКУЧЕЙ СРЕДЫ, СОДЕРЖАЩИЙ ГЕРМЕТИЗИРУЮЩИЕ УПЛОТНИТЕЛИ (ВАРИАНТЫ)

Группа изобретений относится к клапану для текучей среды, содержащему герметизирующие уплотнители (варианты). Клапан содержит: подвижный регулирующий поток элемент, расположенный между впускным отверстием и выпускным отверстием перепускного канала потока текучей среды клапана для текучей среды. Клапан содержит: удерживающий элемент, соединенный с возможностью съема с корпусом регулирующего поток элемента. При этом удерживающий элемент и регулирующий поток элемент выполнены с возможностью образования уплотнительной полости, когда удерживающий элемент соединен с регулирующим поток элементом. Клапан содержит уплотнение, расположенное внутри уплотнительной полости для образования уплотнительной поверхности регулирующего поток элемента. При этом уплотнение содержит внутренний сердечник, состоящий из первого материала, и внешнюю оболочку, состоящую из второго материала, отличного от первого материала, причем сердечник закрыт оболочкой, а удерживающий элемент выполнен с возможностью прижатия указанного ...

УПЛОТНИТЕЛЬНАЯ ВСТАВКА ДЛЯ ШАРОВОГО КРАНА, СЕДЛО ШАРОВОГО КРАНА И ШАРОВОЙ КРАН

Группа изобретений относится к арматуростроению и предназначена в качестве уплотнительной вставки для седла шарового крана. Уплотнительная вставка имеет многослойную структуру, в которой слои графита чередуются с металлическими листами. Металлические листы представляют собой, например, листы стали. Наружные части уплотнительной вставки образованы графитовыми слоями. Имеются варианты выполнения седла шарового крана с такой уплотнительной вставкой и шаровой кран с таким седлом. Группа изобретений направлена на повышение герметичности шарового крана, в особенности в условиях работы при высокой температуре и при наличии текучих сред, которые содержат взвешенные в них твердые частицы. 3 н. и 28 з.п. ф-лы, 4 ил.

СЕДЛО ДЛЯ ОТВЕТВИТЕЛЬНОГО СОЕДИНЕНИЯ

Изобретение относится к зажимному седлу для полимерных труб, содержащему ответвление, седловой элемент, центральные оси (X), (Y) и (Z) и паз для размещения уплотнения, причем внутренняя щека паза на всем протяжении паза расположена перпендикулярно внутренней поверхности седлового элемента, наружная щека паза на всем протяжении паза ни в одном месте не проходит параллельно внутренней щеке. Изобретение повышает надежность соединения. 3 н. и 8 з.п. ф-лы, 5 ил.

ЗАПОРНЫЙ ЭЛЕМЕНТ КЛАПАНА И СПОСОБ И УСТРОЙСТВО ДЛЯ ИЗГОТОВЛЕНИЯ УПЛОТНИТЕЛЬНЫХ ПОВЕРХНОСТЕЙ НА ЗАПОРНЫХ ЭЛЕМЕНТАХ КЛАПАНА

Изобретение относится к двигателестроению, в частности к способам и устройствам для обработки уплотнительных поверхностей на запорных элементах клапана для распыления топлива в установках для впрыскивания топлива в двигателях внутреннего сгорания. Изобретение обеспечивает герметичное запирание клапана и получение идеальных уплотнительных поверхностей. Запорный элемент клапана с продольной осью запорного элемента снабжен хвостиком клапана, конусным участком и вращательно-симметричной уплотнительной поверхностью, проходящей по линии контакта между переходным участком и участком, имеющим конусную форму. Уплотнительная поверхность выполнена в виде узкой сферической зоны с радиусом, выраженным математической зависимостью. Способ изготовления вращательно-симметричных уплотнительных поверхностей на запорных элементах клапанов заключается в том, что продольную ось запорного элемента клапана таким образом наклоняют относительно продольной оси инструмента, что запорный элемент клапана выполняет прецизионное ...

ИЗБЫТОЧНОЕ УПЛОТНЕНИЕ СОПРЯЖЕННЫХ МЕТАЛЛИЧЕСКИХ ПОВЕРХНОСТЕЙ ДЛЯ СОВМЕСТНОГО ИСПОЛЬЗОВАНИЯ С ВНУТРЕННИМИ КЛАПАНАМИ

Группа изобретений относится к трубопроводной арматуре, в частности к предохранительной, и предназначена в качестве устройства для выравнивания давления. Сборка штока для клапана содержит шток, втулку, вертикальную опору, задающую щель, уплотняющую поверхность, окружающую щель, гнездо с клиновидной поверхностью гнезда и множество каналов прохождения потока текучей среды. Шток с одного конца взаимодействует с приводным кулачком для управления прохождением потока текучей среды через клапан. С другого конца шток взаимодействует с втулкой. Шток входит в щель. Втулка расположена с возможностью взаимодействия с гнездом вертикальной опоры или находится на расстоянии от гнезда вертикальной опоры. Втулка содержит клиновидную уплотняющую поверхность, выемку и уплотнение, расположенное в указанной выемке. Указанная клиновидная уплотняющая поверхность втулки и указанное уплотнение предназначены для герметичного сцепления с клиновидной поверхностью гнезда вертикальной опоры. Имеется внутренний клапан ...

ЗАПИРАЮЩАЯ ДЕТАЛЬ ОБРАТНОГО КЛАПАНА СИСТЕМЫ ЗАКАЧКИ РАСТВОРА ДЛЯ ЦЕМЕНТИРОВАНИЯ НЕФТЯНЫХ ИЛИ ГАЗОВЫХ СКВАЖИН

Техническая проблема, на решение которой направлена настоящая полезная модель, заключается в разработке запирающей детали для обратного клапана системы закачки раствора для цементирования нефтяных или газовых скважин и имеющей повышенный срок службы. Запирающая деталь выполнена в виде дискового элемента 1, который изготавливается с центрирующим направляющим элементом в виде четырех выступов 2 с одной его стороны и хвостовиком 3 с другой стороны. Наружные поверхности 4 выступов 2 центрирующего направляющего элемента лежат на одной геометрической цилиндрической поверхности. Хвостовик 3 имеет резьбовой участок 5 у основания и поперечное сквозное отверстие 6 на конце. На дисковом элементе 1 по периметру с противоположных сторон выполнены конические поверхности 7 и 8. 1 з.п. ф-лы, 3 ил.

МАЛОГАБАРИТНЫЙ ПЬЕЗОЭЛЕКТРИЧЕСКИЙ КЛАПАН ДЛЯ СИСТЕМ АВТОМАТИКИ

Полезная модель относится к области точного машиностроения, именно к клапанным устройствам пьезоэлектрического типа для регулирования параметров газовых и жидкостных потоков в системах автоматики и может быть использовано в устройствах для управления газовыми потоками в малогабаритных источниках питания на топливных элементах. Решаемой задачей является создание сравнительно простого по конструкции, надежного и эффективного пьезоэлектрического клапана для систем автоматики, в частности, для управления газовыми потоками в малогабаритных источниках питания на топливных элементах. Дополнительно решается задача повышения функциональных возможностей клапана и повышение его экономичности. В малогабаритном пьезоэлектрическом клапане для систем автоматики, содержащем корпус с входным и выходным каналами, размещенные внутри него запорный элемент и пьезоэлектрический привод его перемещения, соединенный с генератором напряжения, согласно полезной модели, пьезоэлектрический привод выполнен в виде пластины ...

АТМОСФЕРНЫЙ КЛАПАН ДОМЕННОЙ ПЕЧИ

Атмосферный клапан доменной печи, содержащий корпус, несущий седло со сферической контактной поверхностью, крышку, запирающий рычаг и уплотнения из твердого сплава на контактной поверхности седла и крышки, отличающийся тем, что седло выполнено по периметру с горизонтальной площадкой и снабжено кольцевым уплотнением, закрепленным на ней, а нижняя часть крышки выполнена с выступом, контактирующим по всему периметру с упомянутым уплотнением.

РЕГУЛИРУЮЩИЙ ДИСКОВЫЙ КЛАПАН С РАЗГРУЗОЧНЫМ УСТРОЙСТВОМ

Регулирующий дисковый клапан с разгрузочным устройством, содержащий установленное в корпусе неподвижное седло с пропускными профилированными периферийными окнами и центральным каналом, контактирующее с золотником, выполненным с вырезами и соединенным со шпинделем, закрепленную на корпусе крышку, цилиндр, в котором установлен поршень, неразъемно соединенный с золотником, секторные пазы на уплотняющей поверхности золотника, образующие вместе с поверхностью седла промежуточную камеру, сообщенную с центральным каналом седла, отличающийся тем, что седло расположено между золотником и поршнем, неразъемно соединенными через центральное отверстие седла посредством штока, при этом цилиндр расположен в корпусе и разделяет сливную и напорную полости клапана.

ПРОБКА КЛАПАНА

... 1. Пробка клапана для канала переменного сечения, содержащая корпус с конусообразной гладкой скошенной стенкой, имеющий ближний конец, выполненный с возможностью соединения со штоком клапана, и куполообразную поверхность на дальнем конце, которая плавно переходит в конусообразную стенку, при этом пробка избирательно установлена в определенном положении в клапане для изменения пропускной способности клапана. 2. Пробка клапана по п.1, которая дополнительно содержит: кольцевой буртик у ближнего конца корпуса пробки, при этом кольцевой буртик имеет диаметр, который превышает диаметр конусообразной стенки рядом с кольцевым буртиком, и плавную переходную поверхность, проходящую между конусообразной стенкой и кольцевым буртиком. 3. Клапанный узел, содержащий: корпус клапана, имеющий впускной канал и выпускной канал, отверстие для дросселирования потока, расположенное в зоне дросселирования в корпусе клапана и обеспечивающее сообщение по потоку между впускным каналом и выпускным каналом, седло ...

КАНАВОЧНО-КЛИНОВОЕ УПЛОТНИТЕЛЬНОЕ СОЕДИНЕНИЕ

... 1. Канавочно-клиновое уплотнительное разъемное соединение, содержащее клин, образованный наклонными герметизирующими поверхностями с деформационными выступами, установленными у основания наклонных герметизирующих поверхностей клина, канавку, выполненную на плоскости и образованную наклонными герметизирующими поверхностями, уплотнитель, отличающееся тем, что соединение выполнено с одной наклонной герметизирующей клина поверхностью с деформационным выступом и одной наклонной герметизирующей поверхностью канавки.2. Канавочно-клиновое уплотнительное соединение по п.1, отличающееся тем, что, с целью повышения надежности герметизации соединения на дне наклонной герметизирующей поверхности канавки может быть выполнен деформационный выступ.3. Канавочно-клиновое уплотнительное соединение по п.1, отличающееся тем, что, с целью повышения надежности герметизации соединения деформационный выступ наклонной герметизирующей поверхности клина может быть выполнен на съемном кольце.

ИЗОЛЯЦИОННЫЕ КЛАПАННЫЕ СИСТЕМЫ УСТАНОВКИ ЗАМЕДЛЕННОГО КОКСОВАНИЯ

... 1. Изолирующая клапанная система, которая содержит: ! первое седло; ! второе седло, выровненное с упомянутым первым седлом; ! заслонку; ! основной корпус, имеющий отверстие с размером для выравнивания с отверстием в линии; ! при этом основной корпус соединен с линией; ! верхнюю и нижнюю крышки, соединенные с основным корпусом, причем крышки выполнены с возможностью съема для замены частей клапана без отделения основного корпуса от линии; и ! пластину, расположенную внутри крышки, причем пластина содержит плоскую поверхность, которая контактирует с поверхностью заслонки. ! 2. Изолирующая система по п.1, дополнительно содержащая средство для мониторинга и управления давлением внутри изолирующей системы. ! 3. Изолирующая система по п.1, дополнительно содержащая прилегание металл к металлу такое, что имеется контактное уплотнение металл к металлу между упомянутым первым седлом, упомянутым вторым седлом и упомянутой заслонкой. ! 4. Изолирующая система по п.1, в которой упомянутая заслонка является ...

УЗЕЛ УПЛОТНЕНИЯ ЗАПОРНОГО УСТРОЙСТВА

Изобретение относится к арматуростроению, в частности к конструкции узла уплотнения в запорном органе трубопроводной арматуры. Узел уплотнения обеспечивает полную герметичность соединения сопрягаемых поверхностей при снижении трудоемкости в ходе сборки узла. Узел уплотнения состоит из уплотнительного кольца, установленного в посадочном месте элемента запорного органа, например в корпусе задвижки или клине. В посадочном месте выполнен кольцевой конусный усеченный шип или паз, а уплотнительное кольцо имеет два кольцевых выступа, образующих ответный шипу или пазу цилиндрический паз. Кроме того, в уплотнительном кольце предусмотрен дренажно-вентиляционный канал, который после запрессовки уплотнительного кольца в посадочное место закрывается заглушкой. Дренажно-вентиляционный канал может быть выполнен в элементе запорного органа.

СТРУКТУРА ПОВЕРХНОСТИ КОНТАКТА КЛАПАН-СЕДЛО

... 1. Клапанный узел поршневого насоса прямого вытеснения, содержащий клапанное седло, клапан для удара клапанного седла и эластичную клапанную вставку, расположенную вокруг клапана для контакта с клапанным седлом во время удара и имеющую периферический компонент для уменьшения радиального напряжения деформации указанной вставки при ударе. ! 2. Узел по п.1, в котором клапан содержит выемку для размещения эластичной клапанной вставки и подвергающуюся удару поверхность, соседнюю с указанной вставкой, для непосредственного контакта с клапанным седлом во время удара. ! 3. Узел насоса по п.2, в котором периферический компонент является одним из вогнутой поверхностью, уменьшающей наружный профиль указанной вставки до профиля меньшего, чем профиль внешней кромки, образующей выемку, или закругленным упором для начала взаимодействия по конусу перед контактом. ! 4. Узел по п.1, в котором периферический компонент является сердечником, расположенным внутри упомянутой вставки и способным поглощать энергию ...

ПРОБКА КЛАПАНА

... 1. Пробка клапана для канала переменного сечения, содержащая корпус с конусообразной гладкой скошенной стенкой, имеющий ближний конец, выполненный с возможностью соединения со штоком клапана, и куполообразную поверхность на дальнем конце, которая плавно переходит в конусообразную стенку, при этом пробка избирательно установлена в определенном положении в клапане для изменения пропускной способности клапана. 2. Пробка клапана для канала переменного сечения по п.1, которая дополнительно содержит кольцевой буртик у ближнего конца корпуса пробки, при этом кольцевой буртик имеет диаметр, который превышает диаметр конусообразной стенки рядом с кольцевым буртиком, и плавную переходную поверхность, проходящую между конусообразной стенкой и кольцевым буртиком. 3. Клапанный узел, содержащий корпус клапана, имеющий впускной канал и выпускной канал, отверстие для дросселирования потока, расположенное в зоне дросселирования в корпусе клапана и обеспечивающее сообщение по потоку между впускным каналом ...

Шариковый клапан

Редуктор давления

Мембранный клапан

Предохранительный клапан

Клапан

Предохранительный клапан

ЗATBOP APMATУPЫ

Запорное устройство

ЗАПОРНОЕ УСТРОЙСТВО, содержащее расположенные в корпусе запор ный орган, снабженный обоймой, и седло,охватывающее входной штуцер и контактирующее с обоймой, причем на запорном органе в полости обойм ус-. тановлено эластичное уплотнительное кольцо, выступающее за торец запорного органа, отличающееся тем, что, с целью повышения надежности , на седле установлено дополнительное эластичное уплотнительное кольцо, выступающее за торец седла, взаимодействующее с эластичный кольцом запорного органа, причем линия контакта уплотнительных колец запорного органа и седла расположена выше торца обоймы.. § О эо :о DO САЭ ...

Затвор

Изобретение может быть использовано в запорной предохранительной арматуре для систем высокого давления. Цель изобретения - повышение надежности затвора за счет улучшения контакта уплотняющих поверхностей. Запорный орган 1 затвора охватывает седло 3 и выполнен из упругого материала в виде конической оболочки 2 переменной толщины, увеличивающейся к периферии. Угол конусности внутренней конической поверхности 6 оболочки 2 больше угла конусности уплотнительной поверхности 5 седла 3. Вследствие относительного смещения поверхностей 5 и 6 при формировании контакта происходит приработка их. 1 з.п. ф-лы, 4 ил.

Уплотнительный узел для прогреваемого сверхвысоковакуумного затвора

Прямоточный клапан

VALVE WITH PROTECTING MEMBER

Клапан

Valve with seat and closure section used e.g. with vehicle fluids, has opposed contact surfaces radially displaced from passage

Seen along the direction of closure (13) movement (15), the contact surfaces are radially displaced from the passage (7).

MECHANISMUS ZUM FUELLEN UND LEEREN DES WASSERTANKS EINER WASSERTOILETTE.

ÜBERDRUCKVENTIL UND KRYOPUMPE DIE DIESES VERWENDET.

Ventil mit Beschichtung mit geringer Reibung

Vorrichtung zum Steuern des Flusses von Fluid, umfassend: a. einen Rotor, der ein Rotorfluidkommunikationsmittel und wenigstens eine Rotorlastlagerfläche aufweist, wobei die Rotorlastlagerfläche eine stationäre Lastlagerfläche abdichtend in Eingriff nimmt, wobei der Rotor dazu geeignet ist, durch Rotation eine erste Position und eine zweite Position einzunehmen; b. wenigstens einen Stator, der eine stationäre Lastlagerfläche aufweist, die ein Statoxfluidkommunikationsmittel aufweist, wobei die stationäre Lastlagerfläche abdichtend die Rotorlastlagerfläche in Eingriff nimmt und die Rotation des Rotors hinsichtlich des Stators ermöglicht, wobei in der ersten Position das Rotorfluidkommunikationsmittel und das Statorkommunikationsmittel den Fluss von Fluid verhindern, und in der zweiten Position das Rotorfluidkommunikationsmittel und das Statorfluidkommunikationsmittel den Fluss von Fluid ermöglichen, wobei wenigstens die Rotorlastlagerfläche und/oder die Statorlastlagerfläche eine diamantartige ...

Ventil

Ventil für gasförmige und flüssige Medien, umfassend einen Magnetkopf (3), einen Magnetanker (9), einen Ventilkörper (2) und einen Ventilsitz (17), der mit einem Gewölbeteil (22) und einer rohrförmigen Umfangswand (23) als dünnwandiges Metallblechteil ausgebildet ist, dadurch gekennzeichnet, dass der Ventilkörper (2) aus einem dünnen Metallblech geformt ist und eine rohrförmige Außenwand (19) und einen rohrförmigen Außenwandteil (20) aufweist, dass der Magnetkopf (3) mit einem Wandteil (10) eines Außenkerns (7) in den rohrförmigen Außenwandteil (20) des Ventilkörpers (2) eingeschoben und axial exakt ausgerichtet festgelegt ist und dass der Ventilsitz (17) an der Außenwand (19) des Ventilkörpers (2) kraftschlüssig und gasdicht gehalten ist, wobei die Außenfläche (26) der rohrförmigen Umfangswand (23) des Ventilsitzes (17) an der Innenfläche (27) der rohrförmigen Außenwand (19) des Ventilkörpers (2) fest anliegt.

Ventil mit einem kugeligen Dichtelement und Hubkolbenverdichter

Die Erfindung betrifft ein Ventilelement, insbesondere für einen Hubkolbenverdichter, sowie einen Hubkolbenverdichter für einen Kältemittelkreislauf. DOLLAR A Erfindungsgemäß weist das Ventilelement (1) zwischen einem ersten Druckraum (4) und einem zweiten Druckraum (5) eine Durchlassöffnung (6) für ein Fluid auf, wobei der Durchlassöffnung eine ringförmige, erste Dichtfläche (6a) zugeordnet ist, die zusammenwirkt mit einem beweglichen Dichtelement, wobei erfindungsgemäß das Dichtelement (7) eine in Richtung des ersten Druckraums (4) konvex gestaltete, zweite Dichtfläche (7a) aufweist, welche in berührenden Kontakt mit der ersten Dichtfläche (6a) bringbar ist. Das Dichtelement (7) ist bevorzugt als dünnwandiges, metallisches Schalenelement, insbesondere mit einem abgeflachten, kreisringförmigen Randbereich ausgeführt. DOLLAR A Anwendung in Kältemittelkreisläufen, insbesondere von Kfz-Klimaanlagen oder Kälteanlagen.

Durchflussregler

Rückflußverhinderer

Proportionalventil, Klimakompressoranordnung sowie Betriebsverfahren

Die Erfindung betrifft ein elektromagnetisch aktuierbares Proportionalventil (1), insbesondere Druckdifferenzventil für den Einsatz in CO2-Klimakompressoranordnungen, umfassend einen elektromagnetischen Aktuator (3) zum Verstellen eines Ventilkörpers (2) relativ zu einem Ventilsitz (5), wobei dem Ventilsitz (5) ein erster Druckanschluss (7) zugeordnet ist, über den ein Fluid am Ventilkörper (2) vorbei zu einem zweiten Druckanschluss (9) strömen kann. Erfindungsgemäß ist vorgesehen, dass von dem, vorzugsweise als Ventilstößel ausgebildeten, Ventilkörper (2) ein Diffusorraum (30) begrenzt ist, der bei an dem Ventilsitz (5) anliegendem Ventilkörper (2) fluidleitend mit dem ersten Druckanschluss (7) über eine von dem Ventilkörper (2) begrenzte Fluidverbindung (22) verbunden ist.

Sicherheitsventil zum Luftablassen

VERFAHREN UND VORRICHTUNG ZUR DEAKTIVIERUNG VON GEGENSTÄNDEN UND ZUR AUFRECHTERHALTUNG SOLCHER GEGENSTÄNDE IN EINEM DEAKTIVIERTEN ZUSTAND

Heating body valve used as an insertion valve comprises a valve element formed as part of a pre-adjusting device

Heating body valve comprises a valve element (9) formed as part of a pre-adjusting device. Preferred Features: The pre-adjusting device can be adjusted by twisting the valve element. The valve element has a window (22) and a throttle element (20) of the pre-adjusting device has an opening (21) so that the window and the opening can be displaced relative to each other. The valve has an inlet channel (6) having a mouth which forms the valve seat (8) and surrounds the outlet channel (7).

Sealing valve for gas bottle

A gas bottle or other such pressurised gas container is fitted with an openable sealing valve which in a closed condition prevents escape of gas from the bottle. The valve comprises a body 14 forming a convergent outlet passage 18 and a movable valve member 22 which in the closed condition is urged against the body to seal the passage. The valve member presents a continuous sealing edge 32 which is formed by a material (e.g. acetal resin) which is hard but sufficiently compressible to be spread slightly by compression against the body to form a seating but is insufficiently soft for it to be extruded away from the edge in repeated operation of the valve. The valve member is allowed some latitude for movement laterally of the passage, permitting self-centring of the member.

Closure means for flow switch

A flow switch comprises a flow passage 10 with two or more parts 12, 14 wherein one part 12 is smaller in cross-section than the others, a plug 34 with a seal 38 for stopping the flow passage, means 26 for biasing the plug 34 towards its closed position and further means 46 enabling the plug to close against a flow of fluid allowing greater sensitivity. The enabling means preferably comprises small V or U shaped slots 46 in the seal 38 of the plug. The part 14 against which the plug 34 seals is preferably shallowly tapered and frusto-conical. The seal 38 may be cup-shaped and made of resiliently deformable material. The biasing means 26 is preferably a spring. The plug 34 may contain magnetic material to enable a reed switch exterior of the flow passage to sense its movement and thus detect the rate/commencement of flow of fluid and/or the presence of leaks.

Valve of faucet

A valve of a faucet (1) comprises a stationary disk (1b) and a rotary disk (1a), each of which is made of a ceramics or a metal, and one surface of the stationary disk and one surface of the rotary disk are in contact with each other to form a sliding face therebetween. The valve opens and closes a passage for a liquid by means of a relative displacement of the stationary disk and the rotary disk along the sliding face to control the flow rate of the liquid. At least one of the mutually contacting surfaces has a film (19) substantially comprising diamond-like carbon thereon. ...

Valve assembly having rigid seating surfaces

Apparatus and method for selective flow control

Valve

Valve apparatus

A method and system of cleaning a control valve

A method and system of cleaning a turbocharger bypass control valve 30, the control valve being operable to vary position of a bypass valve 26 (known as a wastegate valve) and thereby vary the amount of flow bypass across a turbine [Fig 1 22] and/or compressor 24 of a turbocharger for an engine, wherein the control valve is in fluidic communication with a vacuum source associated with the engine. The control valve is configured to selectively output the vacuum source pressure to modulate the output pressure of the control valve. The method further comprises determining when the control valve requires cleaning, whether the vacuum source is below a threshold value and increasing the flow through the control valve to clean the control valve. The method may also determine whether the vacuum source pressure is expected to be below the threshold and predicting a vacuum requirement for the vacuum source and may also monitor the performance of the control valve, bypass valve, turbocharger and engine ...

Improvements in and relating to Pressure Valves

... 1,194,833. Hydrostatic clutches; valves. S.R.M. HYDROMEKANIK A.B. 19 June, 1967 [24 June, 1966], No. 28563/66. Headings F2C and F2V. Automatic engagement of a hydrostatic clutch according to speed, is regulated by a number of valves devices 20. The driving member 12 carries a sun wheel 25 meshing with each driving gear 15 of a number of gear-wheel pumps which are carried by a easing 13 fast with the driven member of the gear. The valve devices 20 control return flow to the lowpressure side 17 from chambers 19 pressurized by the pumps. Each device comprises an annular valve disc 36 seating spherically or conically on a seat opening 60 from the chamber and also in spherically seated engagement with a movable cylinder 38 working on a fixed piston 40. Chamber 19 communicates with the cylinder chamber 45 through restricted passages 37, 371 whilst chamber 45 communicates in turn with a bleed return chamber 48 through ports 50 controlled by a centrifugally responsive valve 51. The chambers 45, ...

VALVE OF FAUCET

Valves

A valve has a pressure chamber within its housing for remote operation. A stem in the housing has axial passages for power fluid and for cleaning liquid. The valve member is a sleeve, biased closed, which engages a movable seat which is resiliently supported. Leakage around the seals between the sleeve and the stem and between the sleeve and the housing is received in chambers and drained away from the housing to prevent mixing of the cleaning liquid and the processing liquids.

Multi-part valve assembly

STOP VALVE

RELIEF VALVE FOR AIR DISCHARGING

VALVE FOR THE RACKING OF FLUID PRODUCTS WITH AND WITHOUT STÜCKIGEN PORTION

UNDER PRESSURE OF STANDING LIQUID MEMORY, MASK AND OPERATING DEVICE WITH SUCH LIQUID MEMORY

VENTIL FUR EINEN UNTER DRUCK STEHENDEN AUSGABEBEHALTER

ABSPERRVENTIL

ARMATURE

Process for the preparation of a novel crystalline, stable form of the syn isomer of (6R,7R)-7-((2-(2-amino-4- thiazolyl)-(Z)-2-(1-tert-butoxycarbonyl-1- methylethoxy)imino)acetamido)-3-(1-pyridiniummethyl)-3- cephem-4-carboxylate

ARRANGEMENT WITH A VALVE WITH HERMETIC SEALING FOR A GASREININGUNGSVORRICHTUNG WITH THERMAL REGENERATION

HIGH PRESSURE RELIEF VALVE.

BALL VALVE.

STOP VALVE.

VALVE.

UPPER SECTION CARTOUCHE FOR A SANITARY SINGLE STOP VALVE.

VALVE FOR GAS TANKS.

HOMOGENISATION VALVE WITH HIGH ONE ABRASIVWIDERSTAND

CHECK VALVE

MACHINE TOOL WITH DISTRIBUTOR FOR COOLING CUTTING TOOLS OF MEANS OF A CRYOGENIC LIQUID INSTALLED ON A GUN

ROHRLEITUNGSSCHALTER MIT LECKKONTROLLE UND REINIGBAREM LECKAGE-HOHLRAUM

Valve

Aseptisch sealing stop valve

Stop valve with Entleerungsvorrichtung

Valve seat assemblies

Valve seat assemblies are disclosed herein. An example apparatus includes a valve seat assembly including a cage and a valve seat coupled to the cage. The valve seat assembly is to be disposed in a valve body. The example apparatus also includes a seal having a first side, a second side, a third side and a fourth side. The first side, the second side and the third side are to be in contact with the valve seat assembly, and the fourth side is to be in contact with the valve body.

Control system for an S-shaped concrete pump sliding valve actuator

Valve mechanism for at least one liquid plastic component

Valve mechanism (1) for at least one liquid plastic component or liquid plastic, comprising a closure device (2) that includes a needle (5) which can be pressed against a seat (4) in order to close a valve opening (3) in the valve mechanism (1), said needle (5) and/or seat (4) being designed or mounted in such a way as to be resilient.

Surge irrigation valve

System for contamination-free delivering flowable material

VALVE SEAL

PROCESS AND DEVICE FOR CONTROLLING VALVE LEAKAGE SPACES

SYSTEM FOR CONTAMINATION-FREE DELIVERING FLOWABLE MATERIAL

... ▓▓▓A system is provided for contamination free delivery and control of a flowable ▓medium contained in an enclosed flow path or a container. The device enables a ▓flowable material to be formulated without anti-oxidants, preservatives or ▓anti microbial agents. This provides the advantage of an enhanced therapeutic ▓effect for many medications, especially those which are considered labile. The ▓system provides a seat (100) and reversibly deformable seal (110) disposed in ▓the flow path; wherein the seal and seat are moveable between a closed and ▓open state upon the deformation of the seal. In the closed state, the sealing ▓surface (114) between the seal and seat entraps one or more layers of the ▓flowable material which forms a bonding action between the seal and seat to ▓prevent entry of external matter into the flow path while at the same time ▓forming a barrier against the back flow migration of contaminating matter.▓ ...

FLUID CONTROLLER

A fluid controller (1) comprises a metal-made body (2) and a metal-made slide member (3). The metal-made body (2) has a fluid flow-in passage (2a), a fluid flow-out passage (2b), and a communication passage (2c) connecting the flow-in and flow-out passages. The metal-made slide member (3) closes or opens the communication passage (2c) by a tip end portion that is vertically moved in a vertical passage (11) including the communication passage (2c). At least a tip end portion (3a) of the slide member (3) includes, in weight%, 0.001-0.01% of C, 5% or less of Si, 2% or less of Mn, 0.03% or less of P, 100 ppm or less of S, 50 ppm or less of O, 18 to 25% of Cr, 15 to 25% of Ni, 4.5-7.0% of Mo, 0.5- 3.0% of Cu, and 0.1-0.3% of N, with the remainder being alloy substantially made up of Fe and other unavoidable impurities.

FAUCETS

VARIABLE CHOKE VALVE

Embodiments of the present invention generally provide a more reliable variable choke flow control valve. In one embodiment, a variable choke valve for use in a wellbore is provided. The valve includes a tubular housing having an axial bore therethrough and a port through a wall thereof. The valve further includes a tubular sleeve having an axial bore therethrough and first and second holes through a wall thereof and disposed within the housing. The first hole is larger than the second hole, and the sleeve is actuatable among three positions: a first position where the first hole is aligned with the port, a second position where the second hole is aligned with the port, and a third position where the sleeve wall is aligned with the port.

CORROSION-RESISTING AND WEAR-RESISTING ALLOY AND DEVICE USING THE SAME

To provide a corrosion-resisting and wear resisting alloy including cobalt, nickel or iron as a base used for a sliding part or a valve seat for a machine, and restraining erosion and corrosion caused by eutectic carbide constituting the alloy in an atmosphere with dissolved oxygen. A material is selected from a cobalt base added with Cr and/or W, a nickel base added with Fe and/or Cr, and an iron vase added with Cr and/or Ni. The material is cast into an ingot or a slab to produce an intermediate material. The intermediate material comprises mesh-like eutectic carbide and a base material surrounded by the eutectic carbide. A heat plastic forming is applied to the intermediate material at a temperature 650.degree.C or more and the solidus temperature or less. The eutectic carbide is formed into multiple grains or clusters as a discontinuous distribution. A resulting corrosion-resisting and wear-resisting alloy has 0.1 to 0.5 of coefficient of friction, and 300 to 600 Hv of Vickers hardness ...

SWITCH VALVE

A switch valve (10) is provided with an upper body (14) having a plurality of outlet ports (20A, 20B and 20C) and lower body housing (16) with inlet port (18). The switch valve (10) includes a ball member (22) which is rotatable within the switch valve body (12) for selective fluid communication between the inlet port (18) and the selected one of the plurality of outlet ports (20A, 20B or 20C). The ball (22) is rotated by a stem (28), which may be powered by an actuator unit (30). The upper body (14) includes a substantially dome-shaped seating surface (40) for sealing engagement with the outer surface (38) of the ball (22). The biasing member (48) biases the ball (22) radially in a direction opposite the ball inlet port (24) to obtain the desired sealing engagement. The biasing member (48) is preferably a Belleville spring (48) having a single wrap design.

REDUNDANT METAL-TO-METAL SEALS FOR USE WITH INTERNAL VALVES

Redundant metal-to-metal seals for use with internal valves are described. A plug having redun-dant sealing functionality for use with a poppet of an in-ternal valve includes a tapered surface to sealingly engage a seat of the poppet. Additionally, the plug includes a seal (528) adjacent the tapered surface and disposed in a groove (530) defined by the plug to sealingly engage the seat (516).

VALVE

VALVE A valve has a pressure chamber within its housing for remote operation. A stem in the housing has axial passages for power fluid and for cleaning liquid. The valve member is a sleeve, biased closed, which engages a movable seat which is resiliently supported. Leakage around the seals between the sleeve and the stem and between the sleeve and the housing is received in chambers and drained away from the housing to prevent mixing of the cleaning liquid and the processing liquids.

FAUCETS

A faucet has a sealing member clamped at its periphery and overlying an orifice through which fluid is to flow. Pressure applying means maintains the sealing member in sealing engagement with the wall defining the orifice. Upon removal of the pressure applying means the sealing member moves away from the orifice to permit flow. The pressure applying means is located in a valve body which is screwed into the faucet housing and acts to change the periphery of the sealing member. The valve body may be removed by removing the handle and engaging a pair of projections within the handle with a pair of ears on the valve body. The sealing member is thus unclamped and easily removed.

VALVE FLUSHING SYSTEM

SHUT-OFF VALVE FOR HIGH TEMPERATURE EROSIVE FLOW

SHUT-OFF VALVE FOR HIGH TEMPERATURE EROSIVE FLOW A shut-off valve for high temperature erosive flow is disclosed having a valve and a valve engaging or seating surface in which substantial erosion of an area beginning at its initial erosion point adjacent the valve seat does not erode the valve seating surface of the valve seat and the valve seating surface of the valve member to prevent closing of the valve or to cause leaks. The valve has limited but enough universal movement to be self-seating to accommodate thermal growth. The valve and valve seat can be removed from the valve without taking the valve off the line. A number of embodiments are disclosed.

VALVE SEAL

TITLE: VALVE SEAL A valve member for screw down valves or faucets, has a resilient "O" ring 26, 34, trapped in a recess by means of a central wedge, 25, 36, so that the "O" ring is squeezed between the wedge 25, 36, and the side wall 22, 33, of its containing cavity 21, 35, to thereby close off the cavity and securely hold the "O" ring in place. Passage of liquid into the cavity is minimised by the action of the wedge, and the provision of internal securing means 24, 38, so that the wedge is held from within the cavity by a threaded stud, 38, or snap-fit projection, 24, mating with a complementary recess 23, within the wedge. (Figures 2 and 3) ...

SINGLE SPINDLE FOUR-WAY VALVE

FLOW CONTROL DEVICE WITH PRESSURE REGULATION

Жидкостной затвор

1. Жидкостной затвор (1), содержащий корпус (3), образующий круговую цилиндрическую клапанную камеру (4), имеющую по меньшей мере два клапанных отверстия (12, 13) по периферийной стенке (14) камеры, и ротор (17), установленный с возможностью вращения внутри указанной клапанной камеры (4) и содержащий периферийный дугообразный участок (21), выполненный с возможностью уплотняющего контакта с периферийной стенкой (14) камеры и полной блокировки одного из указанных клапанных отверстий одновременно, при этом указанный ротор (17) установлен таким образом внутри указанной клапанной камеры (4), что указанный дугообразный участок (21) постоянно смещен до упора к периферийной стенке (14) камеры, отличающийся тем, чтоуказанный корпус (3) выполнен из металлического сплава;указанный ротор (17) выполнен из металлического сплава, иуказанный дугообразный участок (21) содержит средство по меньшей мере минимизирующее контакт между подобными по микроструктуре областями указанного корпуса (3) и указанного ротора (17).2. Жидкостной затвор (1) по п.1, в котором указанное средство содержит ротор (17), выполненный из металлического сплава, отличного от металлического сплава указанного корпуса (3).3. Жидкостной затвор (1) по п.1 или 2, в котором металлический сплав указанного ротора (17) является более твердым, чем металлический сплав указанного корпуса (3).4. Жидкостной затвор (1) по п.3, в котором металлический сплав указанного ротора (17) является первым латунным сплавом, при этом металлический сплав указанного корпуса (3) является вторым латунным сплавом.5. Жидкостной затвор (1) по п.3, в котором металлический сплав указанного ротора (17) является сплавом нержавеющей стали, п� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК F16K 47/04 (13) 144 291 U1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2014101615/06, 20.01.2014 (24) Дата начала отсчета срока действия патента: 20.01.2014 (72) Автор(ы): ДАВИДССОН ...

Actuating mechanism of a gas valve unit

A gas valve unit for adjusting a volumetric gas flow supplied to a gas burner of a gas appliance, in particular a gas cooking appliance, includes at least two open/close valves which can be actuated by moving at least one magnetically active body, in particular a permanent magnet, relative to the open/close valves. For actuating an open/close valve, a position of the magnetically active body, which is preferably implemented in the form of a permanent magnet, can be varied relative to the shut-off body of the open/close valve.

Coating agent device and coating device

Various exemplary illustrations of a coating agent device are disclosed. In one example, a coating agent device may be a coating agent valve, e.g., for influencing the discharge of a coating agent. The coating agent device may include a plug-in or pluggable fastening base configured to facilitate a plug-in or pluggable mounting of the coating agent device. In some examples, the coating agent device may prevent relative rotation of the device relative to a mating component.

VALVE WITH A TWO-PIECE SEALING GASKET

Valve comprising a gasket interposed between a body () and a closure member (), which is in two pieces (), each piece () has a curved part (), and the two pieces are fixed within the body () and within the closure member (), in such a way as to come into contact via the convex face of their curved part (). 112. Valve comprising an annular sealing gasket made of flexible sheet-metal which is interposed between a body () and a closure member () , characterised in that the gasket:{'b': 5', '6, 'claim-text': [{'b': 5', '6', '11', '1', '2, 'each piece () or (), which is in a single piece, is fixed by means of a fixing part (), one to the body (), the other to the closure member ();'}, {'b': 5', '6', '12, 'each piece () or () has a curved part (), the curved part of one of the pieces facing towards the right and that of the other piece facing towards the left; and'}, {'b': 5', '6', '1', '2', '12, 'the two pieces () and () are fixed within the body () and within the closure member () in such a way as to come into contact via the convex face of their curved part ().'}], 'is in two pieces () and ();'}2. Valve according to claim 1 , characterised in that the metal sheet has a thickness of between 1 and 4 mm.3. Valve according to claim 2 , characterised in that the segments of the curved parts claim 2 , via which the two pieces come into contact claim 2 , have a radius of curvature representing from three to five times the thickness of the metal sheet.4. Valve according to claim 3 , characterised in that the radius of curvature extends over an arc of 50 to 60°.512. Valve according to claim 3 , characterised in that the curved parts () extend along an angle of 270°.6121140. Valve according to claim 3 , characterised in that the segment (δ) claim 3 , via which the curved parts () come into contact claim 3 , is followed claim 3 , in the direction that starts out from the fixing part () claim 3 , by a segment (ε) extending over an arc representing from five to fifteen times the ...

Check valve

A check valve is provided which may be installed horizontally or in other non-vertical orientations, and used with variable frequency drives and other applications without the valve disk becoming misaligned. In one aspect, the valve provides a housing with an inner surface and a passage, a flange within the housing which divides the housing into upstream and downstream portions, and extending around the inner surface, defining a valve seat and a valve aperture, a poppet positioned in the downstream portion, including a valve disk and a valve stem extending from the valve disk, the valve disk engaging the valve seat, being moveable, and being resiliently biased in the closed position against the valve seat to inhibit fluid flow in a first direction, and a guide removably mounted on the inner surface of the housing, the guide receiving the valve stem of the poppet valve as the poppet valve moves.

DISSIMILAR MATERIAL BONDING OF DRIVE SHAFT WITH FLOW CONTROL COMPONENT OF VALVE

A valve, in certain embodiments, includes a drive shaft configured to couple to a fluid control component and having an interlace material at the joint between the drive shaft and the fluid control component. A valve, in other embodiments, includes a fluid control component configured to receive a drive shaft and having an interlace material at the joint between the fluid control component and the drive shaft. A valve, in further embodiments, includes a drive shaft having a mechanical locking system and a fluid control component coupled to the drive shaft at a joint, wherein the spline aids in coupling the fluid control component to the drive shaft. 1. A valve , comprising:a valve body;a fluid control component disposed in the valve body;a shaft coupled to the fluid control component, wherein the shaft extends through the valve body;an interface material facilitating bonding between the fluid control component and the shaft, wherein the interface material comprises zinc, tin, lead, aluminum, brass, gold, cadmium, or cobalt, or any combination thereof.2. The valve of claim 1 , wherein the shaft claim 1 , the fluid control component claim 1 , and the interface material are made of different metals.3. The valve of claim 2 , wherein the interface material forms an intermetallic bond with a first metal of the shaft and a second metal of the fluid control component.4. The valve of claim 2 , wherein the interface material forms a metallurgical bond claim 2 , phase claim 2 , amalgam claim 2 , or any combination thereof claim 2 , with a first metal of the shaft and a second metal of the fluid control component.5. The valve of claim 2 , wherein the interface material isolates a first metal of the shaft from a second metal of the fluid control component.6. The valve of claim 1 , comprising an actuator coupled to the shaft.7. The valve of claim 6 , wherein the actuator comprises a manual actuator.8. The valve of claim 1 , wherein the fluid control component comprises a shaft ...

Switching valve to control a fluid subject to high pressure

A switching valve, in particular for controlling a fluid subject to high pressure is described. The switching valve has at least one valve unit, which includes a valve seat element and a switching element guided movably in a guide element, wherein the valve seat element and the switching element interact to provide a switching valve function. The valve seat element and the guide element are provided in a housing. The valve seat element, the guide element and the housing form a through flow channel for the fluid to be controlled. An elastically and/or plastically deformable sealing body is provided in a fully enclosed space between the inner wall of the housing and the outer walls of the valve seat element and of the guide element. The sealing body can be subject to a predetermined pressure to seal off the through flow channel from the housing and subject the valve seat element and the guide element to an inward-directed preload.

Ball seats having seal interface element for prolonging the seal between ball and seat in corrosive environments and methods of using same

Apparatuses for restricting fluid flow through a well conduit comprise a tubular member, a seat, a plug element, and a seal interface element comprising a seal interface material. The seal interface material resists or retards corrosion by a corroding fluid of the portion of the sealing interface between the plug element and the seat. The seal interface material may be acid-resistant, hydrogen sulfide resistant, and/or the like depending on the type of corroding fluid that is present in the tubular member.

ANTI-CAVITATION VALVE SEAT

An anti-cavitation seat which is disposable between an inlet and an outlet of a pressure reducing valve, and including a plurality of inlets causing fluid to flow into a converging pathway to reduce pressure of the fluid. The inlets form a tortuous path for a portion of the fluid flowing into the anti-cavitation seat, so as to further reduce the pressure of the fluid. A standard stem assembly is used in conjunction with the anti-cavitation seat to alter the flow of fluid through the valve. 1. An anti-cavitation seat positionable between an inlet and an outlet of a main valve and relative a non-anti-cavitation disc of a stem assembly so as to cooperate with the disc in opening and closing fluid flow between the inlet and the outlet of the main valve , the anti-cavitation seat comprising:a first wall having a plurality of spaced apart apertures formed therein;a second wall spaced apart from the first wall and defining an outer chamber between the first and second walls, and an inner chamber, the second wall having a plurality of spaced apart apertures formed therein;wherein a tortuous fluid flow pathway is formed between the apertures of the first wall and the apertures of the second wall; andwherein the apertures of the second wall are arranged so as to direct fluid into the inner chamber such that fluid flow from the second wall apertures converges in the inner chamber.2. The anti-cavitation seat of claim 1 , wherein the apertures of the first wall are elongated slots.3. The anti-cavitation seat of claim 1 , wherein the apertures of the second wall are elongated slots.4. The anti-cavitation seat of claim 1 , wherein the apertures of the second wall are offset from the apertures of the first wall.5. The anti-cavitation seat of claim 1 , including a base from which the first and second walls extend.6. The anti-cavitation seat of claim 1 , including a peripheral lip at an upper end of the first and second walls configured to engage the disc of the stem assembly.7. The ...

VALVES WITH VALVE CLOSING MEMBER ATTACHED TO THE ACTUATED COUNTER-SEAT AND RELATED METHODS

A valve assembly in a reciprocating compressor used in oil and gas industry is provided. The valve assembly comprises an actuator configured to a valve actuating motion and a valve. The valve has a valve seat comprises an inlet port configured to allow a fluid to flow through the valve seat, a counter-seat comprising an outlet port configured to allow the fluid to flow through the counter-seat, and a valve closing member attached to the counter-seat and configured to cover the inlet port when the counter-seat is in a closed position. The counter-seat is configured to receive the valve actuating motion and to move between the closed position and an open position in which the valve closing member does not cover the inlet port thereby selectively allowing the fluid to flow on a flow path which comprises the inlet port and the outlet port. 1. A valve assembly used in a reciprocating compressor for oil and gas industry , the valve assembly comprising:an actuator configured to provide a valve actuating motion; and a valve seat comprising an inlet port configured to allow a fluid to flow through the valve seat;', 'a counter-seat comprising an outlet port configured to allow the fluid to flow through the counter-seat; and, 'a valve having'}a valve closing member attached to the counter-seat and configured to cover the inlet port when the counter seat is in a closed position, wherein the counter-seat is configured to receive the valve actuating motion and to move between the closed position and an open position in which the valve closing member does not cover the inlet port thereby selectively allowing the fluid to flow on a flow path which comprises the inlet port and the outlet port.2. A reciprocating compressor , comprising:an actuator configured to provide a valve actuating motion; and a valve seat comprising an inlet port configured to allow a fluid to flow through the valve seat;', 'a counter-seat comprising an outlet port configured to allow the fluid to flow through ...

PUMP ASSEMBLY INCLUDING FLUID CYLINDER AND TAPERED VALVE SEATS

According to one aspect, a pump assembly includes a fluid cylinder, the fluid cylinder including a fluid passage, the fluid passage defining a tapered internal shoulder of the fluid cylinder, the tapered internal shoulder defining a first angle. A valve controls flow of fluid through the fluid passage. The valve includes a valve seat, which is disposed in the fluid passage and includes a tapered external shoulder, the tapered external shoulder defining a second angle. In one embodiment, the first tapered external shoulder engages the first tapered internal shoulder to distribute and transfer loading. 1. A pump assembly , comprising:a fluid cylinder having a first axis, the fluid cylinder comprising a first fluid passage through which fluid is adapted to flow along the first axis, the first fluid passage defining a first tapered internal shoulder of the fluid cylinder, the first tapered internal shoulder defining a first angle from the first axis; anda first valve to control flow of fluid through the first fluid passage, the first valve comprising a first valve seat disposed in the first fluid passage, the first valve seat having a second axis that is aligned with the first axis, the first valve seat comprising a first tapered external shoulder, the first tapered external shoulder defining a second angle from the second axis;wherein each of the first and second angles ranges from about 10 degrees to about 45 degrees measured from the first axis and the second axis aligned therewith.2. The pump assembly of claim 1 , wherein the first tapered internal shoulder and the first tapered external shoulder define first and second frusto-conical surfaces claim 1 , respectively; andwherein the first tapered internal shoulder engages the first tapered external shoulder to distribute and transfer loading between the first and second frusto-conical surfaces.3. The pump assembly of claim 1 , wherein the first and second angles are equal.4. The pump assembly of claim 3 , wherein ...

Coated seals

The seal made between two surfaces is enhanced by forming a coating, such as a self-assembled monolayer of a functionalized fluorinated macromolecule, on one or both of the surfaces.

ADJUSTABLE DAMPING VALVE

An adjustable damping valve has a valve housing in which is arranged a coil housing and an annular back-iron member which are connected in a magnetically conducting manner to a valve armature. The back-iron member radially penetrates the coil housing via a plurality of windows and has flattened portions at the edge. The at least one window in the coil housing has a width corresponding at least to the width of the back-iron member in at least one assembly position so that the back-iron member can be inserted radially into the coil housing via the at least one window. 11. An adjustable damping valve () comprising:{'b': '5', 'a valve housing ();'}{'b': '43', 'a coil housing () having at least one window;'}{'b': 57', '5', '57', '43', '53', '55', '61', '53', '43', '57', '57', '43', '53, 'an annular back-iron member () having a width; said coil housing and said back-iron member disposed in said valve housing (); said back-iron member () radially penetrating said coil housing () via said at least one window (; ) and comprising flattened edge portions (); said at least one window () in said coil housing () having a width corresponding at least to said width of the back-iron member () in at least one assembly position so that said back-iron member () can be inserted radially into said coil housing () via said at least one window ().'}243636557. The adjustable damping valve according to claim 1 , wherein said coil housing () comprises a guide path (; ) for receiving the back-iron member ().3535755. The adjustable damping valve according to claim 1 , wherein said at least one window () for inserting said back-iron member () is wider than an at least second window ().45759. The adjustable damping valve according to claim 1 , wherein said back-iron member () comprises at least one assembly stop ().557535543. The adjustable damping valve according to claim 1 , wherein said back-iron member () closes said window (; ) in said coil housing () in a final assembly position.65959. The ...

SEALS

An apparatus is provided. The apparatus comprises a housing, a body defining a first chamber and an elongate actuator member mounted for reciprocal movement, at least a part of the actuator member being enclosed by the housing. The apparatus further comprises a seal compartment between the first chamber and a compartment of the housing, the actuator member extending from the housing to the first chamber through the seal compartment. The seal compartment comprises a fluid filled seal chamber enclosing at least a portion of the actuator member and located within the housing, wherein a volume comprising a volume between the fluid filled seal chamber and the actuator member remains substantially constant during movement of the actuator member. 1. An apparatus comprising:a housing;a body defining a first chamber;an elongate actuator member mounted for reciprocal movement, at least a part of the actuator member being enclosed by the housing; anda seal compartment between the first chamber and a compartment of the housing, the actuator member extending from the housing to the first chamber through the seal compartment, wherein the seal compartment comprises a fluid filled seal chamber enclosing at least a portion of the actuator member and located at least partially within the housing, and wherein a volume comprising a volume between the fluid filled seal chamber and the actuator member remains substantially constant during movement of the actuator member.2. The apparatus according to claim 1 , further comprising:a valve; and a valve opening and closing device in the first chamber, the actuator member being operably connected to the device to move the device between open and closed positions of the valve,wherein a flow passage intersects the first chamber.3. The apparatus according to claim 2 , wherein the valve is a rising stem valve claim 2 , and wherein the actuator member comprises an actuator stem of the valve.4. The apparatus according to claim 1 , further comprising ...

High-pressure control valve for high-performance liquid chromatography

A high-pressure switching valve includes a stator and a rotor. The stator includes a plurality of ports where each port is connected at one end to a port connection and having at another end a predetermined port opening cross section at a stator end face of the stator. The rotor includes a rotor end face and at least one or a plurality of grooves. The rotor can be configured to have a rotary position with respect to the stator where two predetermined port opening cross sections connect to one of the grooves in a pressure-tight manner. The rotor and the stator can be pressed together in a sealing manner at the rotor end face and the stator end face in regions away from the port opening cross sections and the at least one or a plurality of grooves. The rotor and the stator each include a hard material. The rotor can be configured to wobble or tilt with respect to a rotational axis of the rotor.

Unidirectional ceramic control valve structure

A unidirectional ceramic control valve includes a valve shell, a shaft, a ring unit, an upper ceramic piece, a lower ceramic piece, a valve base and at least one anti-leak ring. Lower section of the valve shell has two hook holes, and two notches are formed therebelow. A receiving trough is formed at an inner portion of lower section of the shaft to provide a space for the ring unit and the upper ceramic piece. The ring unit is a ring-shaped body with low friction coefficient, and when the ring unit is disposed between the shaft and upper ceramic piece, it prevents the shaft from directly contacting the upper ceramic piece to generate wear. The upper ceramic piece has two symmetric water holes, while the lower ceramic piece has two symmetric circulating holes. A first protruding unit and a second protruding unit are correspondingly formed at the valve base.

Gate Valve In Which Amount Of Squeeze Of Sealing Material Is Controllable

{Summary} 1. A gate valve comprisinga valve seat,a valve body arranged confronting said valve seat,a sealing material, anda driving device that drives said valve body to said valve seat to press said sealing material against said valve seat so that said sealing material will be squeezed to establish sealing, anda control device connected to said driving device,wherein, with respect to said gate valvesaid driving device is comprised ofa servo motor andan actuator connected to said valve body to drive said valve body by applying linear-motion force generated by translating rotative force from said servo motor; andsaid control device is comprised ofan equipment control unit that transmits an instruction either an in-manufacturing CLOSE instruction or a FULL CLOSE instruction according to determination by a related manufacturing equipment anda storage means that stores an in-manufacturing CLOSE position data and a FULL CLOSE position data,whereinsaid control devicereceives an instruction either said in-manufacturing CLOSE instruction or said FULL CLOSE instruction according to determination by said related manufacturing equipment from said equipment control unit andgenerates an in-manufacturing CLOSE position signal or a FULL CLOSE position signal referring to said in-manufacturing CLOSE position data or said FULL CLOSE position data stored in said storage means, andsaid servo motorreceives said in-manufacturing CLOSE position signal or said FULL CLOSE position signal, andthe rotative force of said servo motor that corresponds to the received signal is translated into the movement of said actuator, andsaid sealing material is pressed against said valve seat by the movement of said valve body caused according to said in-manufacturing CLOSE instruction or said FULL CLOSE instruction and is maintained being squeezed.2. The gate valve according to claim 1 , whereinthe state of squeeze of said sealing material at a FULL CLOSE position is large in the amount of squeeze and ...

Method of Joining a Ceramic Plug Tip and a Steel Support Member Using a Threaded Joint and an Adhesive

A valve plug assembly includes a support member having a support member body having a first end and a second end. A stem bore adapted to receive a valve stem may extend axially inward from the second end, and a mating protrusion may extend axially outward from the first end. The valve plug assembly also includes a plug tip having a first end and a second end, and a plug surface adapted to engage a valve seat is disposed adjacent to the first end. A mating bore may extend axially inward from the second end, and the mating protrusion may be received into the mating bore such that a threaded portion of the mating protrusion engages a threaded portion of the mating bore. Additionally, an adhesive bonds the threaded portion of the mating protrusion to the threaded portion of the mating bore. 1. A valve plug assembly comprising:a support member having a support member body having a first end and a second end opposite the first end, the support member also having an axially disposed first mating feature disposed adjacent the first end of the support member body, wherein the first mating feature has a threaded portion, the support member also having a stem mating feature disposed proximate to the second end of the support member body, the stem mating feature being adapted to secure the support member to a valve stem, and wherein the support member comprises a metal material;a plug tip having a first end and a second end opposite the first end, the plug tip also having an axially disposed second mating feature disposed adjacent the second end, wherein the second mating feature has a threaded portion, the plug tip also having a plug sealing surface disposed proximate the first end, the plug sealing surface being adapted to sealingly engage a valve seat, and wherein the plug tip comprises a ceramic material; andan adhesive,wherein the threaded portion of the first mating feature of the support member engages the threaded portion of the second mating feature of the plug tip, ...

Metal Reinforced Seal Plate for Pilot Actuated Spool Valve

Upper and/or lower seal plates of a sub plate mounted, pilot actuated spool valve are reinforced with one or more metal rings. In a number of preferred embodiments, the metal ring is comprised of steel. Portions of the seal plates may comprise an engineering thermoplastic such as polyoxymethylene (POM) sold by E. I. DuPont de Nemours under the DELRIN® trademark. The plastic material may be molded to the metal ring. In other embodiments, the plastic material and metal ring(s) are mechanically connected together.

DROP-IN CONTAINMENT SLEEVE

The drop-in containment sleeve is an apparatus designed to work in conjunction with a flow control device for preventing a dense liquid (such as diesel fuel) from being dispensed into a storage tank that contains a less dense liquid, such as gasoline fuel, (and vice versa) by allowing the device to seal against an inside lip of the sleeve, thereby fully- or partially-containing the fluid that activated the flow control device. In petroleum fuel applications, the containment sleeve can replace the inlet collar of the filler tube. 1. A drop-in containment sleeve , comprising:an open-ended hollow cylindrical tube, said open-ended hollow cylindrical tube comprising an open central bore; an open top end; an open bottom end; and a sidewall, an outwardly-extending top flange; andan inwardly-extending bottom flange configured for allowing a liquid-tight seal to be made between the inwardly-extending bottom flange and a Transmix Prevention Lock type flow control device.2. The drop-in containment sleeve according to wherein an O-ring is disposed on said inwardly-extending bottom flange to allow said liquid-tight seal.3. The drop-in containment sleeve according to wherein said drop-in containment sleeve is disposed within a standpipe of a storage vessel.4. The drop-in containment sleeve according to wherein at least one O-ring is disposed between the sidewall of said drop-in containment sleeve and said standpipe.5. The drop-in containment sleeve according to wherein at least one O-ring is disposed between the outwardly-extending top flange of said drop-in containment sleeve and said standpipe.6. The drop-in containment sleeve according to wherein said outwardly-extending top flange comprises a commercially-available inlet collar claim 1 , said inlet collar welded onto said open-ended hollow cylindrical tube.7. The drop-in containment sleeve according to wherein at least one bolt hole is disposed in the side wall of said inlet collar for providing structural support between ...

Tunable Valve Assembly

A tunable valve assembly reduces valve-generated vibration. One embodiment comprises a valve body and valve seat having substantially collinear longitudinal axes. A rebound characteristic frequency is associated with rebound of the elastic valve body base plate from forceful contact with the valve seat. A central cavity in the valve body encloses a spring-mass damper optionally immersed in a dilatant liquid and having a damper resonant frequency approximating a pump housing resonance. A lateral support assembly adjustably secured to the valve seat has a support resonant frequency designed in conjunction with the rebound characteristic frequency and the damper resonant frequency. Combined hysteresis heat loss associated with the above three vibration frequencies is reflected in lower closing energy impulse amplitude and damping of associated vibrations. Compliance of the elastic valve body base plate mating with the valve seat increases closing energy impulse duration and narrows the corresponding induced vibration spectrum.

Valve Seat For A Pressure Regulator

Improved valve seats for pressure regulators, as well as improved pressure regulators, are disclosed. For example, in one disclosed embodiment, a valve seat may comprise a first valve seat surface; a second valve seat surface opposite the first valve seat surface; a compression seal area; and a concentric stress relief groove on the first valve seat surface.

INJECTION VALVE HAVING A FLOW LIMITER

A valve for injecting fuel includes a valve carrier having a valve seat and an inflow orifice, a valve positioning member, and a flow limiting element that is disposed on the valve positioning member. The inflow orifice includes a step having a peripheral annular edge, and the flow limiting element is disposed on the valve positioning member in such a way that when the valve is opened, a flow area between the annular edge and the flow limiting element is reduced from a first flow area to a second flow area. 110.-. (canceled)11. A valve for injecting fuel , comprising:a valve carrier having a valve seat and an inflow orifice, the inflow orifice having a step that includes a peripheral annular edge;a valve positioning member; anda flow limiting element disposed on the valve positioning member in such a way that when the valve is opened, a first flow area between the annular edge and the flow limiting element is reduced from the first flow area to a second flow area.12. The valve as recited in claim 11 , wherein the valve is an outward-opening valve.13. The valve as recited in claim 11 , wherein the flow limiting element has a tapering region that tapers in a flow direction and defines claim 11 , with the annular edge claim 11 , a size of the second flow area as a function of a position of the valve positioning member.14. The valve as recited in claim 13 , wherein the tapering region is a conical region.15. The valve as recited in claim 13 , wherein the tapering region is a concave region.16. The valve as recited in claim 13 , wherein the tapering region is a convex region.17. The valve as recited in claim 13 , wherein the tapering region is a step-shaped region having a step and having a tapering first partial region and a tapering second partial region.18. The valve as recited in claim 17 , wherein the first and second partial regions are each embodied conically.19. The valve as recited in claim 11 , further comprising:a flow region having a constant diameter that is ...

Tunable Fluid End

Tunable fluid end embodiments comprise a family, each family member comprising a pump housing with at least one installed tunable component chosen from: tunable valve assemblies, tunable valve seats, tunable radial arrays and/or tunable plunger seals. For example, a tunable valve assembly or tunable radial array selectively attenuates valve-generated vibration at its source, thus reducing the likelihood of fluid end failures associated with fatigue cracking and/or corrosion fatigue. Adding tunable valve seats and/or tunable plunger seals to a fluid end facilitates optimal damping and/or selective attenuation of vibration at one or more predetermined (and frequently localized) fluid end resonant frequencies. Thus, the likelihood of exciting destructive resonances in a pump's fluid end housing is further reduced. Optimized vibration attenuation and optimized fluid end damping are provided by altering resonant frequencies in each tunable component in relation to one or more fluid end resonant frequencies and/or tunable component resonant frequencies. 1. A tunable fluid end comprising at least one subassembly , each subassembly comprising a housing , a suction valve , a discharge valve , and a plunger , at least one said valve comprising a tunable valve assembly , and at least one said valve comprising a tunable valve seat;wherein said tunable valve assembly comprises a valve body having guide means to maintain valve body alignment, a peripheral valve seat interface, a peripheral groove spaced apart from a central reservoir, and a plurality of viscoelastic body elements disposed in said valve body;wherein said tunable valve seat comprises a mating surface longitudinally spaced apart from a lateral support mounting surface, together with a lateral support assembly, said lateral support assembly being adjustably secured on said mounting surface and comprising a plurality of circular viscoelastic support elements, each said support element comprising a support ...

Tunable Fluid End

Tunable fluid end embodiments comprise a family, each family member comprising a pump housing with at least one installed tunable component chosen from: tunable valve assemblies, tunable valve seats, tunable radial arrays and/or tunable plunger seals. For example, a tunable valve assembly or tunable radial array selectively attenuates valve-generated vibration at its source, thus reducing the likelihood of fluid end failures associated with fatigue cracking and/or corrosion fatigue. Adding tunable valve seats and/or tunable plunger seals to a fluid end facilitates optimal damping and/or selective attenuation of vibration at one or more predetermined (and frequently localized) fluid end resonant frequencies. Thus, the likelihood of exciting destructive resonances in a pump's fluid end housing is further reduced. Optimized vibration attenuation and optimized fluid end damping are provided by altering resonant frequencies in each tunable component in relation to one or more fluid end resonant frequencies and/or tunable component resonant frequencies. 1. A tunable fluid end comprising at least one subassembly , each subassembly comprising a housing , a suction valve , a discharge valve , and a plunger , at least one said valve comprising a tunable radial array , and at least one said valve comprising a tunable valve seat;wherein said tunable radial array comprises a valve body having guide means to maintain valve body alignment, a peripheral valve seat interface, a fenestrated peripheral groove spaced apart from a central reservoir, and a plurality of viscoelastic body elements disposed in said valve body;wherein said tunable valve seat comprises a mating surface longitudinally spaced apart from a lateral support mounting surface, together with a lateral support assembly, said lateral support assembly being adjustably secured on said mounting surface and comprising a plurality of circular viscoelastic support elements, each said support element comprising a support ...

Fluid End with Carbide Valve Seat and Adhesive Dampening Interface

A tungsten carbide seat for high-pressure oilfield well service pumps is disclosed. A bonding agent, in conjunction with an interference tapered fit between the valve seat and fluid end housing eliminates stresses created in prior art interference fits. Three interface embodiments are disclosed: a shallow taper combined with a shoulder, a steep taper without a shoulder, and a compound surface in which the seat has an external concave surface and the housing surface that mates with the seat has a convex surface.

Valve Element and Fluid Control Valve

The present invention is directed a valve element which is intended to improve a sealing property at a time of closing a fluid control valve and to improve stability while maintaining durability for a long time period, wherein the valve element constitutes one of a valve seat surface or a seating surface and the valve element includes a concave portion formed in an opposing surface facing the valve seat surface and a resin coating film which is formed in the concave portion and contacts the valve seat surface. 1. A valve element constituting one of a valve seat surface or a seating surface seating on the valve seat surface , the valve element comprising:a concave portion formed in an opposing surface facing the other of the valve seat surface or the seating surface; anda resin coating film which is formed in the concave portion and contacts the other of the valve seat surface or the seating surface.2. The valve element according to claim 1 , wherein a peripheral portion of the concave portion in the opposing surface is a polish limiting guide portion in the case of polishing the surface of the resin coating film.3. The valve element according to claim 1 , wherein the opposing surface includes a driving force acting surface that contacts a drive mechanism for driving the valve element claim 1 , andwherein no resin coating film is formed on the driving force acting surface.4. A fluid control valve claim 1 , comprising: a valve element constituting one of a valve seat surface or a seating surface seating on the valve seat surface claim 1 , the valve element including:a concave portion formed in an opposing surface facing the other of the valve seat surface or the seating surface; anda resin coating film which is formed in the concave portion and contacts the other of the valve seat surface or the seating surface. The present invention relates to a fluid control valve for use in, for example, a mass flow controller and the like for controlling a flow rate of gas, and in ...

FAUCET COMPONENT WITH IMPROVED COATING

A component for a faucet includes a substrate including alumina and a first material provided over at least a portion of the substrate. The first material includes titanium and carbon. The component also includes a second material provided over the first material, the second material including carbon and having carbon sp3 bonding of at least 40 percent. 1. A component for a faucet comprising:a substrate;a first material provided over at least a portion of the substrate, the first material comprising titanium and carbon; anda second material provided over the first material, the second material comprising carbon and having carbon sp3 bonding of at least 40 percent.2. The component of claim 1 , wherein the second material layer further comprises nitrogen.3. The component of claim 2 , wherein the second material has a thickness of at least about 100 nanometers.4. The component of claim 1 , further comprising a third material provided between the first material and the substrate claim 1 , the third material comprising titanium.5. The component of claim 1 , wherein the second material has a hardness of at least about 40 gigapascals.6. The component of claim 1 , wherein the second material has an elastic modulus of at least about 400 gigapascals.7. The component of claim 1 , wherein the second material has a coefficient of friction lower than that of diamond-like carbon.8. The component of claim 1 , wherein the second material is amorphous.9. The component of claim 1 , wherein the second material comprises graphitic inclusions.10. The component of claim 1 , wherein the component is a disk valve for a faucet.11. The component of claim 1 , wherein the component comprises an inlet for a fluid.12. A component for a faucet comprising:a substrate;a first material on a surface of the substrate, the first material including titanium; anda second material on the first layer of material, the second material including at least 40 percent tetrahedrally-bonded carbon.13. The component ...

SEALING SYSTEM FOR A SOLENOID VALVE AND SOLENOID VALVE

A sealing system for a solenoid valve is provided for accommodation in a recess in an actuating element movable by a coil. The recess proceeds from an end face of the actuating element close to a valve seat. The actuating element is movably mounted in a solenoid valve and designed to clear or close the valve seat (). A sealing disk and a spring element biasing the sealing disk are provided, wherein the spring element is arranged on the end face facing away from the valve seat centered with respect to the sealing disk and exerts a force on the sealing disk in direction of the valve seat. The sealing disk is axially shiftably guided in the actuating element. A solenoid valve itself includes such sealing system. 1. A sealing system for a solenoid valve for accommodation in a recess in an actuating element movable by a coil , wherein the recess proceeds from an end face of the actuating element close to a valve seat and the actuating element is movably mounted in the solenoid valve and is adapted to clear or close the valve seat , the sealing system comprising a sealing disk and a spring element biasing the sealing disk , the spring element being arranged on an end face of the sealing disk facing away from the valve seat and being centered with respect to the sealing disk and exerting a force on the sealing disk in a direction towards the valve seat , wherein the sealing disk is axially shiftably guided in the actuating element.2. The sealing system for a solenoid valve according to claim 1 , wherein the sealing system comprises a seal holder which is axially shiftably guided in the actuating element and holds the sealing element claim 1 , wherein seal holder and sealing element are a prefabricated unit and together form the sealing disk.3. The sealing system for a solenoid valve according to claim 1 , wherein the seal holder is formed substantially ring-shaped and accommodates the sealing element in its interior.4. The sealing system for a solenoid valve according to ...

DOUBLE SEAT VALVE WITH ISOLATED VENT CHAMBERS

A valve comprising sealing members configured to allow the valve to achieve an open position, a closed position, lower seat clean position and an upper seat clean position is described. A method including opening a valve, closing a valve, moving the valve to a lower seat clean position, and moving the valve to an upper seat clean position is described. 1. A valve assembly comprising:a valve body having an interior space;a conduit in fluid communication with said interior space;an upper stem assembly;a lower stem assembly;a vent space disposed between said upper stem assembly and said lower stem assembly;a resilient sealing surface disposed within said vent space;at least one blocker stop that extends from said upper stem assembly;a first side channel that extends through said lower upper stem assembly that is in fluid communication with said interior space; anda center channel that extends through said lower upper stem assembly that is in fluid communication with said vent space.2. The valve assembly according to claim 1 , further comprising a second side channel that extends through said lower and upper stem assembly that is in fluid communication with said interior space.3. The valve assembly according to claim 2 , wherein said center channel extends between said first side channel and said second side channel.4. The valve assembly accordingly to claim 1 , wherein at least one blocker stop extends from said upper stem assembly to engage said resilient sealing surface.5. The valve assembly according to claim 1 , wherein said at least one blocker stop is a plurality of blocker stops.6. The valve assembly according to claim 1 , wherein said resilient surface is circular in geometry and includes a at least one radial vent.7. The valve assembly according to claim 1 , wherein said resilient surface is an O-ring.8. The valve assembly according to claim 6 , wherein said center channel is in fluid communication with said radial vent.9. The valve assembly according to claim ...

FLUID ADDITIVE CONTROL VALVE

A valve arrangement includes various improvements useable in the context of a fluid additive system, such as a water softener. For example, the valve assembly may include a seal assembly engaged by a reciprocating piston, in which the seal assembly includes a minimal number of parts, is easily assembled, and can be easily inserted in the bore of the valve body without jeopardizing the integrity of the seals. The valve assembly may further include a quick-disconnect system which allows a “control head” including a valve actuation system and electronic controls to be disconnected from the rest of the valve arrangement with only a partial rotation of the control head. The valve assembly may also include a venturi used for drawing regeneration fluid into the system, and an associated venturi cleaner system which allows a user to unclog the fluid-flow orifice of the venturi without any disassembly of parts of the valve arrangement. 1. A seal assembly for use in a multi-port valve , the seal assembly comprising:a first seal subassembly structure including a first pair of flanges separated by a first plurality of stanchions, said first seal subassembly structure having a first shoulder extending axially away from said one of said first pair of flanges and a second shoulder extending axially away from the other of said first pair of flanges;an outer seal mounted to one of said first shoulder and said second shoulder, said outer seal having an outer seal surface disposed radially outwardly of said first pair of flanges;a second seal subassembly structure including a second pair of flanges separated by a second plurality of stanchions, said second seal subassembly structure having a third shoulder extending axially away from said one of said second pair of flanges and a fourth shoulder extending axially away from the other of said second pair of flanges; andan inner seal mounted to one of said third shoulder and said fourth shoulder, said inner seal extending radially ...

VALVE WITH FORCE GENERATING ELEMENT

Embodiments of a force generating element that can broaden the application of valves and, in particular, pilot-operated valves to include applications that have extreme operating temperatures. These improvements forgo use of o-rings (and like elastomeric devices) in lieu of more durable and robust seals (e.g., metal-to-metal contact). Rather, as discussed more below, the valves incorporate a force generating element that ensures contact between components to form appropriate seals that allow the cylinder to maintain pressure, despite dimensional changes in the structure of the valve. 1. A valve assembly , comprising:a nozzle;a disc element with a first side and a second side that contacts the nozzle in a first position; anda force generating element disposed on the first side,wherein the force generating element has a loading profile that defines a first load at a first deflected dimension and a second load at a second deflected dimension that is different from the first deflected dimension, andwherein the first load is substantially the same as the second load.2. The valve assembly of claim 1 , wherein the force generating elements comprises one or more spring elements.3. The valve assembly of claim 2 , wherein the spring elements comprise at least one conical spring washer.4. A valve assembly claim 2 , comprising:a nozzle;a cylinder spaced apart from the nozzle;a piston disposed in the cylinder;a disc element coupled to the piston; anda force generating element coupled between the piston and the disc element, the force generating element having a loading profile under substantially constant loading that defines a first deflected dimension and a second deflected dimension that is less than the second deflected dimension.5. The valve of claim 4 , wherein the force generating element comprises a spring.6. The valve of claim 4 , wherein the force generating element comprises a first conical spring washer and a second conical spring washer claim 4 , and wherein the ...

BALL VALVE

A ball valve stopper comprising a spherical contoured body comprising a substantially inelastic first material and having a flow port. A closed face of the spherical contoured body is orthogonal with respect to the flow port and includes a spherical fluid seal area. A rotation support member is aligned orthogonally to the flow port and the fluid seal area. A material discontinuity volume is disposed behind the closed face of the spherical contoured body. 1. A ball valve stopper comprising:a spherical contoured body comprising a substantially inelastic first material and having a flow port;a closed face of the spherical contoured body that is orthogonal with respect to the flow port and includes a fluid seal area;a rotation support member aligned orthogonally to the flow port and the fluid seal area; anda material discontinuity volume disposed behind the closed face of the spherical contoured body.2. The ball valve stopper of claim 1 , wherein the material discontinuity volume is at least partially disposed behind the fluid seal area.3. The ball valve stopper of claim 1 , wherein the material discontinuity volume includes a channel in the spherical contoured body that either comprises a void or contains a second material having a different modulus of elasticity than a modulus of elasticity of the first material.4. The ball valve stopper of claim 3 , wherein the first material is metallic.5. The ball valve stopper of claim 4 , wherein the second material has a lower modulus of elasticity than a modulus of elasticity of the first material.6. The ball valve stopper of claim 1 , wherein the material discontinuity volume is disposed between at least a portion of the fluid seal area and the rotation support member.7. The ball valve stopper of claim 1 , wherein the material discontinuity volume comprises a channel and wherein a cross-section area of the channel varies based on the proximity of the cross-section area to a centerline axis of the flow port.8. The ball valve ...

SINGLE CAVITY DIVERTER VALVE

This invention relates to a diverter valve assembly, including a valve housing and a holder secured to the side of the housing for retaining a hand-held showerhead. The housing includes a water inlet port, and first and second water outlet ports. The valve housing includes a single internal valve cavity within which the hollow valve core rotates. The hollow valve core assists in diverting water within the valve cavity to one or both of the water outlet ports. 110014192111121322213214112132122132242322321213521. A diverter valve () assembly , comprising: a valve housing (); a holder () attached to the valve housing () for securing a hand-held showerhead (); the valve housing () further comprising a water inlet (); a first water outlet (); and a second water outlet (); a hollow valve core () having an internal passage () for the flow of water , and which further facilitates the movement of water through the valve housing (); a swivel knob () connected with the valve core (); a valve cavity () within the valve housing () , and providing a fluid connection path between the first () and second water outlets (); a valve stem () extending from valve core () , the valve stem () connected to the swivel knob (); the valve core () further including a baffle () , and a water port () on the outer wall of the valve core (); the water port () on the valve core () being alignable with the first water outlet () and the second water outlet (); and a silicone seal () between the valve core () and the valve housing ().2515511112131100. The diverter valve assembly of claim 1 , wherein the silicone seal () is fixedly secured to the valve housing () claim 1 , and wherein the silicone seal () includes a water flow way () that is alignable with the water inlet () claim 1 , the first water outlet () and second water outlet () of the valve housing () to facilitate the flow of water through the diverter valve assembly ().3100525511112131100. The diverter valve assembly () of claim 1 , wherein ...

FLUORINE RESIN MOLDED BODY

In a fluorine resin molded body employed in a fluid device and including a ring-shaped seal section, the seal section is configured from a projection and a backup section that are aligned in a direction in which the seal section receives a compressive load when the fluorine resin molded body is installed in the fluid device. 1. A fluorine resin molded body employed in a fluid device and comprising a ring-shaped seal section ,the seal section being configured from a projection and a backup section that are aligned in a direction in which the seal section receives a compressive load when the fluorine resin molded body is installed in the fluid device.2. The fluorine resin molded body according to claim 1 , whereina cross-sectional shape of the projection is an isosceles triangle including two vertices in the backup section, and an angle at a vertex separated from the backup section is 90-120 degrees.3. The fluorine resin molded body according to claim 2 , whereinin the backup section, groove sections are formed on both sides of the projection adjacently to the projection.4. The fluorine resin molded body according to claim 2 , whereinthe projection is provided in plurality, and the projections are provided on both of upper and lower sides of the backup section.5. The fluorine resin molded body according to claim 4 , whereinrecesses are formed on both of left and right sides of the backup section.6. The fluorine resin molded body according to claim 4 , whereina width of the backup section is 15-25% of a height of the seal section.7. The fluorine resin molded body according to claim 2 , whereinthe projection is configured from a plurality of projections disposed aligned with each other.8. The fluorine resin molded body according to claim 7 , whereinan interval of the plurality of projections is 15-25% of a height of the seal section.9. The fluorine resin molded body according to claim 2 , whereina crushing rate of the seal section when the fluorine resin molded body is ...

Combined Inlet and Outlet Check Valve Seat

A valve assembly for a fluid pump includes a valve body; an inlet disk movably disposed in the valve body; an outlet disk movably disposed in the valve body; and a valve seat fixed within the valve body. The valve seat includes a first aperture defined axially through the valve seat in a radial central portion thereof, and one or more second apertures disposed at least partly around the first aperture. The inlet disk is biased in a closed position against the valve seat along a first surface thereof, the closed position of the inlet disk covering the one or more second apertures of the valve seat. The outlet disk is biased in a closed position against the valve seat along a second surface thereof. 1. A valve assembly for a fluid pump , comprising:a valve body;an inlet disk movably disposed in the valve body;an outlet disk movably disposed in the valve body; anda valve seat fixed within the valve body and comprising a first aperture defined axially through the valve seat in a radial central portion thereof, and one or more second apertures disposed at least partly around the first aperture,wherein the inlet disk is biased in a closed position against the valve seat along a first surface thereof, the closed position of the inlet disk covering the one or more second apertures of the valve seat, andwherein the outlet disk is biased in a closed position against the valve seat along a second surface thereof.2. The valve assembly of claim 1 , wherein the valve seat includes a groove defined along the first surface of the valve seat claim 1 , each of the one or more second apertures is disposed in the groove.3. The valve assembly of claim 2 , wherein the inlet disk is disposed over and covers the groove when in the closed position.4. The valve assembly of claim 2 , wherein the groove has an annular shape with a radial inner edge between the first aperture and the one or more second apertures.5. The valve assembly of claim 1 , wherein the valve seat comprises a first seat ...

VALVE ASSEMBLY HAVING IMPROVED ROTATIONAL FEEL

A valve assembly includes a valve housing having an internal generally cup-shaped bore, a valve control cartridge inserted into the bore and having a rotatable control stem extending upwardly therefrom, and a bonnet nut having a through-bore. The bonnet nut is threaded to the valve housing such that the control stem extends through the through-bore. Flexible fingers are provided along the through-bore to control a level of resistance to a rotation of the rotatable control stem. The stem is positioned to frictionally engage the flexible fingers as the stem is rotated. 1. A valve assembly , comprising:a valve housing having an internal generally cup-shaped bore;a valve control cartridge inserted into the bore and having a rotatable control stem extending upwardly therefrom; anda bonnet nut having a through-bore, the bonnet nut coupled to the valve housing such that the control stem extends through the through-bore;wherein flexible fingers are provided along the through-bore to control a level of resistance to a rotation of the rotatable control stem;wherein the rotatable control stem is positioned to frictionally engage the flexible fingers as the rotatable control stem is rotated.2. The valve assembly of claim 1 , wherein the bonnet nut is threaded to an internal wall of the valve housing.3. The valve assembly of claim 2 , wherein the valve housing comprises internal threads and the bonnet nut comprises external threads claim 2 , the external threads of the bonnet nut engaging the internal threads of the valve housing.4. The valve assembly of claim 1 , wherein the bonnet nut comprises a counterbore axially aligned with the through-bore claim 1 , and wherein the valve housing is received in the counterbore.5. The valve assembly of claim 4 , wherein flexible fingers are provided along the counterbore.6. The valve assembly of claim 4 , wherein flexible fingers are provided along a surface between claim 4 , and perpendicular to claim 4 , the counterbore and the through- ...

FLUID FLOW CONTROL DEVICES AND SYSTEMS

Devices and systems for controls the flow of fluid through a conduit are described herein. One flow control device that controls the flow of fluid through a conduit, includes a body having an axis and defining a passage that allows fluid to flow from an upstream position to a downstream position, the valve body having a converging portion in the upstream position with an inner surface that curves gradually inward, but having an annular rim formed by a portion that extends outward from the inward curving shape, and a throat between the converging and diverging portions; and, a flow regulator supported within the body for controlling the flow of fluid through the conduit, the flow regulator having an annular seating surface configured to contact the annular rim of the body. 1. A flow control device that controls the flow of fluid through a conduit , comprising:a body having an axis and defining a passage that allows fluid to flow from an upstream position to a downstream position, the valve body having a converging portion in the upstream position with an inner surface that curves gradually inward, but having an annular rim formed by a portion that extends outward from the inward curving shape, and a throat between the converging and diverging portions; and,a flow regulator supported within the body for controlling the flow of fluid through the conduit, the flow regulator having an annular seating surface configured to contact the annular rim of the body.2. The flow control device of claim 1 , wherein the annular rim is positioned at the transition between the converging and diverging portions.3. The flow control device of claim 1 , wherein the flow regulator has a body and wherein the body includes a resilient mechanism configured to reduce or eliminate oscillations of the flow regulator as the annular seating surface approaches the annular rim.4. The flow control device of claim 1 , wherein the flow regulator has a body and wherein the body includes a resilient ...

GAS VALVE UNIT

A gas valve unit for controlling a gas throughput routed to a gas burner of a gas appliance includes a valve housing, an actuation shaft which is able to set an opening cross section of the gas valve unit, and a stop valve. A linearly-displaceable connection element transmits a movement of the actuation shaft to the stop valve. The connection element has a plastic bend forming an overpressure protection. 114-. (canceled)15. A gas valve unit for controlling a gas throughput routed to a gas burner of a gas appliance , comprising:a valve housing;an actuation shaft configured to set an opening cross section of the gas valve unit;a stop valve; anda linearly-displaceable connection element configured to transmit a movement of the actuation shaft to the stop valve, said connection element having a plastic bend forming an overpressure protection.16. The gas valve unit of claim 15 , constructed for controlling the gas throughput routed to the gas burner of a gas cooker as the gas appliance.17. The gas valve unit of claim 15 , wherein the connection element is embodied as a one-piece plastic bend.18. The gas valve unit of claim 15 , wherein the plastic bend has a first radius when a pressure force exerted upon the plastic bend is less than or equal to a specific threshold value claim 15 , and a second radius when the pressure force exerted upon the plastic bend is greater than the prespecified threshold value.19. The gas valve unit of claim 18 , wherein the plastic bend is capable of being deformed by kinking from the first radius into the second radius when the pressure force exerted upon the plastic bend is greater than the prespecified threshold value.20. The gas valve unit of claim 18 , wherein the plastic bend is capable of being deformed from the first radius into the second radius when the pressure force exerted upon the plastic bend is less than the specific threshold value.21. The gas valve unit of claim 15 , wherein the stop valve has a stop element claim 15 , and ...

SEALING VALVE

A sealing valve is provided with a valve seat including a valve hole, a valve element to open and close the valve hole, and a seal member to seal between the valve element and the valve seat during full closing. The seal member includes a fixed part fixed to the valve seat, a contact part to be brought into contact with a seal surface of the valve element, and a constricted part provided between the fixed part and the contact part. The contact part is rotatable about the constricted part. 1. A sealing valve comprising:a valve seat including a valve hole;a valve element configured to open and close the valve hole; anda seal member configured to seal between the valve element and the valve seat during full closing,wherein the seal member includes a fixed part fixed to the valve seat, a contact part to be brought into contact with the valve element, and a constricted part provided between the fixed part and the contact part, andthe contact part is rotatable about the constricted part.2. The sealing valve according to claim 1 , whereinthe valve element has a seal surface,the contact part has a facing surface located to face the seal surface of the valve element during full closing,the facing surface of the contact part includes a non-contact surface located out of contact with the valve element while the valve element is in a fully closed state and no front-rear differential pressure occurs, andthe non-contact surface has a surface area smaller than a surface area of a rear surface of the contact part opposite the non-contact surface, the rear surface extending from each of end portions of the contact part to the constricted part.3. The sealing valve according to claim 1 , wherein the facing surface of the contact part has a nearly circular-arc shape in section designed such that a distance from a rotation center of the contact part located in the constricted part to the facing surface is longer as a point on the facing surface is closer from a seal point between the ...

HIGH PRESSURE VALVE WITH MULTI-PIECE STATOR ASSEMBLY

A valve for use with liquid chromatography or other analytical systems may include a separate and removable stator plate. The stator plate may be a with a multi-piece stator plate with different layers. A mounting device mounting device may be adapted to engage the stator plate. The mounting plate may include a plurality of ports for fluidic connections in fluid communication with fluid passageways in the stator plate. Liquid chromatography elements, such as a packed chromatography column, a sample loop, or an electronic device may be formed on one or more layers of the stator plate. A first stator plate may be removed from a valve and replaced by a second stator having additional or different liquid chromatography elements than the first stator plate. 1. A stator plate for a high-pressure valve for an analytical instrument , the stator plate comprising:a first side and a second side, wherein the first side of the stator plate is adapted for removably mounting to a mounting plate, wherein the stator plate has a plurality of peripheral openings in the first side of the stator plate proximal a peripheral region thereof, including a first peripheral opening, and a plurality of central openings in the second side of the stator plate proximal a center region thereof, including a first central opening, wherein each of the peripheral openings of the stator plate are adapted for first fluid communication with a corresponding opening of the mounting plate; anda first fluid pathway formed within the stator plate in third fluid communication between the first peripheral opening and the first central opening, wherein the first fluid pathway further comprises a sample loop, and wherein the second side of the stator plate is adapted to engage with a first side of a rotor seal so that, when the rotor seal is rotatably moved, a second fluid communication is formed between two of the central openings on the second side of the stator plate.2. The stator plate of claim 1 , further ...

LOW VOLUME, PRESSURE ASSISTED, STEM AND SEAT VENT VALVE AND ASSOCIATED METHODS

Exemplary embodiments are directed to vent valves, systems and methods generally involving a valve body that includes a seat retainer, a needle and a seat. The seat includes a bore extending there through and the needle includes a needle stem and a needle head. The seat is disposed inside the seat retainer. The needle stem is disposed inside the bore. The needle is configured to be pulled through the seat to stop flow through the bore. Exemplary embodiments are further directed to a system including a stem return spring mechanism and a solenoid return spring mechanism. A processing device is configured to actuate the solenoid return spring mechanism to permit the stem return spring mechanism to pull the needle through the seat to stop flow through the bore.

PRESSURE SENSITIVE GRAPHENE-BASED VALVE ELEMENT

Described herein is a graphene-based valve element capable of passive and repeatable stopping or allowing fluid flow as a function of inlet pressure. Passive flow controller devices based on the valve element are also described. 1. A valve element disposed between a gas pressure differential , comprising:(1) a separating wall placed between a gas at a higher pressure and a gas at a lower pressure, wherein the difference between the higher pressure and the lower pressure is a pressure differential, wherein the wall comprises an aperture allowing fluid communication between the gases;(2) a valve membrane occluding the aperture, wherein the membrane comprises a graphene-based layer and a porous support, wherein the graphene-based layer is deposited upon the porous support;wherein the valve membrane allows the gas at the higher pressure to begin to pass through the aperture when the pressure differential reaches an opening threshold.2. The valve element of claim 1 , wherein the valve membrane precludes gas flow through the aperture when the pressure differential is at or below a closing threshold.3. The valve element of claim 1 , wherein the valve membrane allows for repeated opening and closing of gas flow in response to changes in the pressure differential.4. The valve element of claim 1 , wherein the opening threshold increases with the increase in the thickness of the graphene-based layer.5. The valve element of claim 2 , wherein the closing threshold is at or below about 30 psi.6. The valve element of claim 5 , wherein the closing threshold is about 10 psi to about 15 psi.7. The valve element of claim 1 , wherein the opening threshold is about 10 psi to about 100 psi.8. (canceled)9. The valve element of claim 7 , wherein the opening threshold is about 20 psi to about 30 psi.10. (canceled)11. (canceled)12. The valve element of claim 1 , wherein the graphene-based layer comprises: graphene claim 1 , reduced graphene oxide claim 1 , or graphene oxide (GO).13. The ...

DISTRIBUTING, OPENING AND CLOSING DEVICE FOR TAPS

Distributing, opening and closing device for taps, has an inlet chamber, an outlet chamber to the shower column/head or to the shower hose, an outlet chamber to the shower hose or the shower column/head, a discharge opening and a water regulator with the functions of opening, intermediate closing and closing/discharging in one single mechanism, the water regulator being connected to the chambers of the distributing device, and being regulated via an actuating control with several positions, diverting the water, depending on the actuating rotation, to the corresponding chamber or discharge opening of both, thus releasing the water retained in the feed pipes in order to eliminate uncontrolled discharges of water, dripping or the formation of bacteria that are commonly generated in stagnant water, such as legionella. 12389498566111771345: Distributing , opening and closing device for taps , characterised in that it comprises an inlet chamber () , an outlet chamber () to the shower column/head () or to the shower hose () , an outlet chamber () to the shower hose () or the shower column/head () , a discharge opening () and a water regulator () which incorporates the functions of opening , intermediate closing and closing/discharging in one single mechanism , said water regulator () being connected to the chambers (-.) of the distributing device , and being regulated via an actuating control (-.) with several positions , depending on the actuating rotation , to divert the water to the corresponding chamber (-) or discharge opening () of both.262131415110: Distributing claim 1 , opening and closing device for taps claim 1 , according to claim 1 , wherein the water regulator () comprises an inlet pipe (.) claim 1 , an outlet pipe (.) to the shower column/head or shower hose claim 1 , an outlet pipe (.) to the shower hose or shower column/head claim 1 , a discharge pipe (.) and ceramic discs ().31010110210112139814: Distributing claim 2 , opening and closing device for taps ...

In Situ Gasket Assembly

Some embodiments of the invention provide a valve including a body, a valve element arranged within the body to selectively inhibit flow through the body, and a seal assembly that includes a gasket, a cutter seat, and a retaining ring. The cutter seat includes a cutter that is arranged to cut the body gasket during installation. A two-plane seal is formed by cutting the body gasket between the retaining ring and the body. 1. A valve comprising:a body having a channel extending there through and a first sealing surface and a second sealing surface each positioned radially outward from the channel and offset from one another, wherein the offset between the first sealing surface and the second sealing surface defines a bore;a valve element positioned within the channel and configured to selectively inhibit flow through the body;a gasket abutting a portion of the first sealing surface and a portion of the second sealing surface;a cutter seat at least partially received within the bore and configured to compressively engage the second sealing surface, the cutter seat comprising a cutter that is configured to create a first sub-gasket and a second sub-gasket by severing the gasket during installation; anda retaining ring coupled to the valve body, the retaining ring comprising a first mating surface and a second mating surface, the first mating surface being configured to compressively engage the first sub-gasket and the first sealing surface of the body and the second mating surface being configured to compressively engage the cutter seat, second sub-gasket, and second sealing surface.2. The valve of claim 1 , wherein the cutter comprises a sharpened edge and a flat mating surface claim 1 , the sharpened edge being configured to shear a unitary gasket into at least the first and second sub-gaskets and the flat mating surface configured to compressively engage the second sealing surface of the body.3. The valve of claim 2 , wherein the sharpened edge of the cutter extends ...

ELECTRONIC EXPANSION VALVE

Disclosed in the present invention is an electronic expansion valve, which comprises a valve seat assembly () and a valve housing assembly () connected to the valve seat assembly (). A valve stem assembly () and a valve port () are disposed in the chamber of the valve seat assembly (), and an electrical motor () is situated in the chamber of the valve housing assembly (). The electrical motor () drives the valve stem assembly () to move along an axial direction through a gear system () so as to adjust the flow rate of the fluid flowing through the valve port (). The valve seat assembly () has a split structure, which comprises a valve seat () and a cover () connected to the valve seat () and to the valve housing assembly (). A mounting surface () is formed on the outer side of the valve seat () and a sight glass () is connected thereon. The structure of the expansion valve enables the sight glass () to be easily attached to the valve seat assembly (). 1. An electronic expansion valve , comprising a valve seat assembly and a housing assembly connected with the valve seat assembly , wherein a valve stem assembly and a valve port are provided in an inner chamber of the valve seat assembly , and an electric motor is provided in an inner chamber of the housing assembly the electric motor is configured to drive , via a gear system , the valve stem assembly to move along an axial direction so as to regulate quantity of fluid flowing through the valve port , wherein the valve seat assembly is of a separable structure comprising a valve seat and a cover connected to the valve seat , the cover is connected with the housing assembly , a mounting plane is provided on an outer side surface of the valve seat , and a sight glass is connected to the mounting plane.2. The electronic expansion valve according to claim 1 , wherein the valve seat is further of a separable structure comprising an upper valve seat and a lower valve seat connected with the upper valve seat claim 1 , the ...

SYSTEMS AND METHODS FOR A PLUG VALVE

A valve seat is provided herein. The valve seat may include a ceramic valve seat insert positioned within a metal valve seat housing and comprising an indentation corresponding to a retention lip of the metal valve seat housing and a compliant sleeve positioned coaxially around at least a portion of an outer surface of the ceramic valve seat insert. 1. A valve seat comprising:a ceramic valve seat insert positioned within a metal valve seat housing and comprising an indentation corresponding to a retention lip of the metal valve seat housing; anda sleeve positioned coaxially around at least a portion of an outer surface of the ceramic valve seat insert.2. The valve seat of claim 1 , wherein the sleeve comprises a pliable polymeric material.3. The valve seat of claim 2 , wherein the sleeve comprises polytetrafluoroethylene.4. The valve seat of claim 3 , wherein the metal valve seat housing comprises one of a nickel chromium alloy claim 3 , a titanium alloy claim 3 , and a zirconium alloy.5. The valve seat of claim 4 , wherein the ceramic valve seat insert comprises a valve seat surface.6. The valve seat of claim 5 , wherein the valve seat surface has a shape corresponding to a shape of a portion of a plug head.7. The valve seat of claim 6 , wherein the valve seat surface comprises a rounded end profile.8. The valve seat of claim 1 , wherein the ceramic valve seat insert and the compliant sleeve are press fit within the metal valve seat housing.9. A valve assembly comprising:a plug head assembly comprising a plug head and a translating shaft;a valve seat configured to receive the plug head, wherein the plug head engages with a ceramic valve seat insert,wherein the ceramic valve seat insert is positioned within the valve seat and comprises an indentation corresponding to a retention lip of the valve seat, andwherein the valve seat further comprises a sleeve positioned coaxially around at least a portion of an outer surface of the ceramic valve seat insert.10. The valve ...

AIR VALVE AND SPEAKER

Described is an air valve and a speaker containing the air valve described. The air valve comprises a valve body, an elastic valve plate, an air inlet penetrating through an inner surface and an outer surface of the valve body, and an air outlet penetrating through an inner surface and an outer surface of the valve plate. The valve plate is connected with the valve body in a sealing manner to form an annular sealing area encircling the air outlet and the air inlet. The inner surface of the valve body covers the air outlet, and/or the inner surface of the valve plate covers the air inlet. The air valve can be opened or closed via elastic deformation of the valve plate of the air valve. Therefore, the air valve can be perfectly matched with smaller sized products, reducing the difficulty in adjusting the micro speaker in a limited space. 110-. (canceled)11. An air valve , comprising:a valve body;an elastic valve plate;an air inlet penetrating through an inner surface and an outer surface of the valve body; andan air outlet penetrating through an inner surface and an outer surface of the valve plate, the valve plate is connected with the valve body in a sealing manner to form an annular sealing area encircling the air outlet and the air inlet; and', 'at least one of: (a) the inner surface of the valve body covers the air outlet; or (b) the inner surface of the valve plate covers the air inlet., 'wherein12. The air valve of claim 11 , further comprising a mesh fabric that covers the air outlet and is fixedly connected with the valve plate.13. The air valve of claim 12 , wherein the mesh fabric covers the air outlet at the side of the inner surface of the valve plate claim 12 , and the inner surface of the valve body covers the air outlet claim 12 , so that the mesh fabric is sandwiched between the inner surface of the valve body and the inner surface of the valve plate claim 12 , and the inner surface of the valve plate is spaced from the air inlet.14. The air valve of ...

FLOW PATH SWITCHING VALVE

A stator and a rotor are in contact with each other while maintaining fluid tightness inside a housing including connection ports at an outer surface. The stator includes a port end portion arrangement surface that forms a part of an inner wall surface of the housing and where a plurality of holes that communicate with the connection ports are arranged. The rotor includes a flow path connection surface that is in contact with the port end portion arrangement surface of the stator while maintaining fluid tightness and to which a groove for selectively connecting the holes arranged at the port end portion arrangement surface is formed. At least one of the port end portion arrangement surface and the flow path connection surface is coated with a resin film having chemical resistance and slidability. 1. A flow path switching valve comprising:a housing including a plurality of connection ports for connecting flow path pipes at an outer surface, and including a space inside;a stator, provided inside the housing, including a port end portion arrangement surface that forms a part of an inner wall surface of the housing and where a plurality of holes that communicate with the connection ports are arranged;a rotor, arranged inside the housing, including a flow path connection surface that is in contact with the port end portion arrangement surface of the stator while maintaining fluid tightness and to which a groove for selectively connecting the holes arranged at the port end portion arrangement surface is formed; anda rotor driving section for rotating the rotor,wherein at least one of the port end portion arrangement surface and the flow path connection surface is coated with a resin film having chemical resistance and slidability.2. The flow path switching valve according to claim 1 , wherein only one of the port end portion arrangement surface and the flow path connection surface is coated with the resin film claim 1 , and another is coated with diamond-like carbon.3. ...

HIGH-FLOW FLUID VALVE BLOCK

An illustrative valve block includes a pressure plate, a fluid transfer block, and a diaphragm. The pressure plate includes a pressure channel configured to receive a pressurized first fluid and a recess in a surface of the pressure plate. The pressure channel and the recess are fluidly connected. The fluid transfer block includes an inlet connection configured to receive a second fluid and an outlet connection. The fluid transfer block also includes a plurality of valve inlet bores each fluidly connected to the inlet connection. The plurality of valve inlet bores are distributed along at least part of a first circular shape. The fluid transfer block further includes a plurality of valve outlet bores each fluidly connected to the outlet connection. 1. A valve block comprising: a pressure channel configured to receive a pressurized first fluid; and', 'a recess in a surface of the pressure plate, wherein the pressure channel and the recess are fluidly connected;, 'a pressure plate comprising an inlet connection configured to receive a second fluid;', 'an outlet connection;', 'a plurality of valve inlet bores each fluidly connected to the inlet connection, wherein the plurality of valve inlet bores are distributed along at least part of a first circular shape; and', 'a plurality of valve outlet bores each fluidly connected to the outlet connection, wherein the plurality of valve outlet bores are distributed along at least part of a second circular shape, and wherein the first circular shape is within the second circular shape; and, 'a fluid transfer block comprisinga diaphragm between the pressure plate and the fluid transfer block, wherein the plurality of valve inlet bores and the plurality of valve outlet bores are adjacent to the recess.2. The valve block of claim 1 , wherein:in a first state in which a pressure within the recess is above a threshold pressure, the diaphragm is pressed against a surface of the fluid transfer block in which the plurality of valve ...

METHODS AND SYSTEM FOR A ZERO HYSTERESIS VALVE

Methods and systems are provided for a zero hysteresis valve. In one example, a valve comprises protrusions shaped to maintain a distance between a moveable portion of the valve and a valve seat. 1. A valve , comprising:a piston shaped to oscillate within a valve housing, wherein a protrusion is physically coupled to the piston and shaped to prevent the piston from moving within a threshold distance of a valve seat.2. The valve of claim 1 , wherein the valve housing comprises a single inlet arranged symmetrically along a central axis of the valve along which the piston oscillates.3. The valve of claim 2 , wherein the valve housing comprises a first outlet and a second outlet arranged directly opposite one another along an axis perpendicular to the central axis.4. The valve of claim 1 , wherein the protrusion is a first protrusion claim 1 , and where a second protrusion is physically coupled to the piston.5. The valve of claim 4 , wherein the first protrusion and the second protrusion are identically shaped claim 4 , and where the shape of the first and second protrusions is a semi-cylinder having a flat side in face-sharing contact with a top side of the piston claim 4 , and where a half-circle extends from the flat side claim 4 , a portion of the half-circle shaped to contact the valve seat without compressing claim 4 , and where the first and second protrusions are curved to match a curve of a circumference of the piston.6. The valve of claim 4 , wherein gaps separate the first and second protrusions claim 4 , and where the valve is rotational and bilaterally symmetric.7. A system claim 4 , comprising:a pressure control device comprising a moveable portion shaped to adjust flow of a fluid through an inlet and a plurality of outlets, the pressure control device further comprising one or more protrusions physically coupled to a top of the moveable portion, and where the pressure control device is symmetric.8. The system of claim 7 , wherein the protrusions include a ...

SEAL ASSEMBLIES FOR USE WITH FLUID VALVES

Seal assemblies for use with fluid valves are disclosed. An apparatus includes a valve plug having a first annular shoulder adjacent an end of the valve plug, a seal disposed on the first annular shoulder, and a fastener at the end of the valve plug to force the seal against the first annular shoulder to apply a load to the seal. 1. An apparatus comprising:a valve plug having a first annular shoulder adjacent an end of the valve plug;a seal disposed on the first annular shoulder between a wall of a valve cage and the valve plug; anda fastener at the end of the valve plug to force the seal against the first annular shoulder to apply a load to the seal.2. The apparatus of claim 1 , further comprising a spring between the fastener and the seal to maintain the load.3. The apparatus of claim 2 , wherein the spring comprises a Bellville spring.4. The apparatus of claim 1 , further comprising a load ring between the fastener and the seal to distribute a force applied by the fastener to the seal.5. The apparatus of claim 1 , herein the seal comprises one or more graphite rings.6. The apparatus of claim 1 , wherein the valve plug comprises a second annular shoulder between the end of the valve plug and the first annular shoulder claim 1 , and further comprising a load ring in contact with the seal and a spring disposed between the load ring and the fastener and spaced from the second annular shoulder.7. The apparatus of claim 6 , wherein the fastener may be adjusted to urge the spring toward the second annular shoulder and the load ring to increase the load on the seal.8. The apparatus of claim 7 , wherein the fastener may be adjusted when the valve plug is installed in the valve cage.9. The apparatus of claim 1 , further comprising one or o scraper rings adjacent the seal.10. An apparatus comprising:a valve plug having a first portion having a first diameter and a second portion having a second diameter smaller than the first diameter;a circumferential seal disposed on the ...

COMPONENT MOUNTER

A rotary head, on which are arranged in a circumferential direction multiple nozzle holders each holding a suction nozzle, is provided with, separately to first negative pressure supply unit that supplies negative pressure to the suction openings of all the suction nozzles, second negative pressure supply unit that supplies negative pressure to the suction nozzle held by the nozzle holder that is lowerable when that nozzle holder is lowered. Accordingly, when performing pickup operation and mounting operation using the suction nozzle, the state of the suction nozzle is not affected by the state of the other suction nozzles. 1. A component mounter for picking up a component and mounting the component on a mounting target , the component mounter comprising:a suction nozzle configured to pick up a component at a tip section of the suction nozzle using suction;a rotary head including a rotating body on which multiple nozzle holders are arranged in a circumferential direction, each of the nozzle holders being configured to hold the suction nozzle;a moving device configured to move the rotary head in a horizontal direction;a rotating device configured to rotate the rotating body such that the multiple nozzle holders revolve in the circumferential direction;a raising and lowering device configured to lower, from among the multiple nozzle holders, the nozzle holder that is at a specified revolving position;whereinthe multiple nozzle holders include a nozzle passage connected to the tip section of the suction nozzle being held by that nozzle holder,the rotating body includes a first negative pressure unit configured to supply negative pressure to the nozzle passages of, from among the multiple nozzle holders, all the nozzle holders via a first port, and a second negative pressure unit configured to supply negative pressure to the nozzle passage of, from among the multiple nozzle holders, the nozzle holder positioned at the specified revolving position via a second port, ...

FLUID VALVE APPARATUS HAVING ENCLOSED SEALS

Fluid valve apparatus having enclosed seals are disclosed. An example fluid valve includes a movable flow control member positioned between an inlet and an outlet of a fluid flow passageway of the fluid valve. A retainer is removably coupled to the flow control member such that the retainer and the flow control member define a sealing cavity when the retainer is coupled to the flow control member. A seal is positioned within the sealing cavity to define a sealing surface of the flow control member. The seal has an inner core composed of a first material, where the core is substantially encased with a sheath composed of a second material different than the first material. The retainer clamps the seal to the flow control member. 1. A fluid valve comprising:a movable flow control member positioned between an inlet and an outlet of a fluid flow passageway of the fluid valve;a retainer removably coupled to a body of the flow control member, the retainer and the flow control member to define a sealing cavity when the retainer is coupled to the flow control member; anda seal positioned within the sealing cavity to define a sealing surface of the flow control member, the seal having an inner core composed of a first material and an outer sheath composed of a second material different than the first material, the core being substantially enclosed with the sheath, the retainer to clamp the seal to the flow control member.2. The valve of claim 1 , wherein the movable flow control member comprises a butterfly valve disk.3. The valve of claim 1 , wherein the movable flow control member comprises a plug.4. The valve of claim 1 , wherein the seal comprises an annular ring that at least partially protrudes from the sealing cavity of the flow control member claim 1 , the seal to engage a seat of the fluid valve.5. The valve of claim 1 , wherein the sheath is thinner than the core such that the core causes the sheath to conform to a valve seat of the fluid valve when the flow control ...

VALVE DEVICE FOR SWITCHING OR METERING A FLUID

A valve device for switching or metering a fluid includes a housing, a flow channel defined by the housing, and a valve body arranged in the flow channel. The valve body has a sealing section which contacts a housing-side sealing seat when the valve device is closed. The sealing section at least slightly protrudes beyond a surface of the valve body facing the sealing seat. 1. A valve device for switching or metering a fluid , comprising:a housing defining a flow duct; anda valve body arranged in the flow duct, the valve body having a sealing portion which, when the valve device is closed, bears against a sealing seat on the housing,wherein the sealing portion projects at least slightly beyond a surface of the valve body that faces toward the sealing seat.2. The valve device as claimed in claim 1 , wherein the valve body and the sealing portion are produced in one piece.3. The valve device as claimed in claim 1 , wherein the sealing seat is of substantially planar form in an area surrounding a sealing region.4. The valve device as claimed in claim 1 , wherein the functional elements of the valve device are of substantially rotationally symmetrical form and the sealing portion is part of a radially encircling annular web.5. The valve device as claimed in claim 1 , wherein claim 1 , in the flow duct claim 1 , there is arranged a fluidically active shield configured to at least partially shield the valve body from a flow of the fluid in the event of a return flow of the fluid when the valve body is forcibly raised from the sealing seat.6. The valve device as claimed in claim 1 , wherein claim 1 , in an area surrounding the sealing region claim 1 , a delimiting wall of the flow duct has a rounding or a bevel or an upstream edge.7. The valve device as claimed in claim 1 , wherein the valve body has an axial and approximately spherical-cap-shaped recess against which a valve needle is configured to abut.8. A method for producing a valve body of a valve device for switching ...

NEEDLE TIP AND SEAT FOR A CHOKE VALVE

Embodiments of the present disclosure relate to a choke valve that includes a choke body, a choke trim disposed in the choke body, where the choke trim is configured to adjust a cross-sectional area of a flow path in the choke body to adjust a fluid flow through the choke valve, a needle of the choke trim disposed in the flow path of the fluid flow, where the needle includes a first portion having a superhard material, a seat of the choke trim, where the needle is configured to move along an axis extending through an opening of the seat to adjust the fluid flow through the choke valve. 1. A choke valve , comprising:a choke body;a choke trim disposed in the choke body, wherein the choke trim is configured to adjust a cross-sectional area of a flow path in the choke body to adjust a fluid flow through the choke valve;a needle of the choke trim disposed in the flow path of the fluid flow, wherein the needle comprises a first portion having a superhard material; anda seat of the choke trim, wherein the needle is configured to move along an axis extending through an opening of the seat to adjust the fluid flow through the choke valve.2. The choke valve of claim 1 , wherein the seat comprises a second portion having the superhard material.3. The choke valve of claim 2 , wherein the second portion of the seat defines a surface in which the first portion of the needle contacts.4. The choke valve of claim 1 , comprising a stem of the choke trim claim 1 , wherein a third portion of the needle is secured to the choke trim claim 1 , and wherein the stem comprises a second material claim 1 , different from the superhard material.5. The choke valve of claim 4 , wherein the superhard material comprises polycrystalline diamond and the second material comprises tungsten carbide.6. The choke valve of claim 5 , wherein the superhard material comprises between 65% and 96% polycrystalline diamond by weight.7. The choke valve of claim 5 , wherein the tungsten carbide is coated with a ...

ONE-WAY VALVE

A one-way valve, comprises a valve housing; a valve member provided within the valve housing, the valve member being operative to open and close the valve and comprising a diaphragm with a central orifice to allow fluid to pass from one side of the diaphragm to the other; a valve inlet provided on a first side of the diaphragm; and a valve outlet provided on a second side of the diaphragm; wherein the configuration of the diaphragm and the valve housing biases the diaphragm to seal the inlet at rest. 1. A one-way valve , comprising:a valve housing;a valve member provided within the valve housing, the valve member being operative to open and close the valve and comprising a diaphragm having a central portion and a perimeter portion, wherein the central portion comprises a central orifice to allow fluid to pass from one side of the diaphragm to the other and the perimeter portion comprises an outer edge of the diaphragm, andwherein the central portion is thicker than the perimeter portion;a valve inlet provided on a first side of the diaphragm; anda valve outlet provided on a second side of the diaphragm;wherein the diaphragm and the valve housing are configured to bias the diaphragm to seal the inlet at rest,wherein the housing further comprises a valve seat, on the first side of the diaphragm, against which the diaphragm forms a seal at rest, and 'the diaphragm further comprises a diaphragm projection formed in relief on the first side of the diaphragm, such that a sealing surface of the diaphragm projection contacts the valve seat at rest to form the seal.', 'wherein'}2. A one-way valve according to claim 1 , wherein the valve inlet is annular.3. A one-way valve according to claim 1 , wherein the valve inlet comprises two or more openings claim 1 , each radially offset from the diaphragm orifice.4. A one-way valve according to claim 1 , wherein the outlet is provided coaxially with the diaphragm orifice.5. A one-way valve according to claim 1 , wherein the valve ...

Pinch valve tube, method for manufacturing the same, and pinch valve

A pinch valve tube includes a fluororubber tube, the entirety of which is formed integrally of fluororubber and having an internal cavity arranged as a flow passage for a fluid, and a crosslink density of the fluororubber forming an inner surface of the flow passage is made higher than an average crosslink density of the entirety.

Multi-Part Valve Assembly

The present invention discloses a multi-component valve system for use in pumps such as fracking pumps for use in subterranean resource production. The assembly includes a retaining pin, a guide on the retaining pin, a valve on the retaining pin, an insert on the retaining pin, a retainer above the insert on the retaining pin, and a retainer cap inertia welded to the end of the retaining pin. In a particular embodiment, the guide component is stamped and folded to create the desired shape. 1. A valve assembly , comprising:a retaining pin;a guide located on the retaining pin;the guide having a central portion;a valve located on the retaining pin on top of the guide;an insert located on the valve;an insert retainer located on the retaining pin above the insert;a retainer cap located above the insert retainer and affixed to the retaining pin;a plurality of legs extending downward from the central portion;a footer extending outward from each leg; and,a stabilizer extending downward from the top portion between each of a pair of the legs.2. The valve assembly of claim 1 , the guide further comprising:a recess formed on a bottom side of the valve; and,the central portion of the guide located inside the recess to position the guide concentrically with the valve.3. The valve assembly of claim 1 , further comprising:a recess formed on a bottom side of the valve;the central portion of the guide having externally extending tabs; and,the tabs located inside the internal circumference of the valve recess.4. The valve assembly of claim 1 , further comprising:the retainer cap having a nonagon configuration.5. The valve assembly of claim 1 , further comprising:the retaining pin having a generally triangular head.6. The valve assembly of claim 1 , further comprising:the legs bent-formed from the central portion;the footers bent-formed from the guide legs; and,the stabilizers bent-formed from the central portion.7. The valve assembly of claim 1 , further comprising:the guide ...

Flow switch assembly featuring two-part base assembly with non-metallic upper part and metallic lower part

A low water cut-off switch assembly features a two-part base assembly having a lower base part and an upper base part. The lower base part is made from a metallic material, configured to be adapted on piping having a fluid flow, and also configured with a central orifice to receive a paddle arm that pivots on an axis in response to the fluid flow in the piping. The upper base part is made from a non-metallic material, configured with a corresponding central orifice to receive the paddle arm, and configured with a channel to receive a pivot arm to mount and allow the paddle arm to pivot on the axis in order to actuate an ON/OFF switch in response to the fluid flow. The non-metallic material of the upper base part has a substantially lower coefficient of heat transfer than the metallic material of the lower base part, so as to substantially reduce condensation build-up in the low water cut-off switch, e.g., especially when the low water cut-off switch is used in applications exposed to temperatures below freezing, including chiller applications.

FLEXIBLE SEAT BALL VALVE

A system includes a ball valve. The ball valve includes a housing, a ball, and a first valve seat assembly. The housing includes a chamber, a first fluid passage intersecting the chamber, and a second fluid passage intersecting the chamber. The ball is disposed in the chamber and is configured to control fluid flow between the first and second fluid passages. The first valve seat assembly is disposed between the ball and the housing. The first valve seat assembly includes a first seat configured to seat against the ball both above and below a pressure threshold, and a second seat configured to seat against the ball only above the pressure threshold, wherein the second seat has a coefficient of friction that is lower than the first seat. 1. A system , comprising: a housing having a chamber, a first fluid passage intersecting the chamber, and a second fluid passage intersecting the chamber;', 'a ball disposed in the chamber, wherein the ball is configured to move to control fluid flow between the first and second fluid passages;', a first seat configured to seat against the ball both above and below a pressure threshold; and', 'a second seat configured to seat against the ball only above the pressure threshold, wherein the second seat has a coefficient of friction that is lower than the first seat., 'a first valve seat assembly disposed between the ball and the housing, wherein the first valve seat assembly comprises], 'a ball valve, comprising2. The system of claim 1 , wherein the first seat comprises a first metal.3. The system of claim 2 , wherein the second seat comprises a second metal having the coefficient of friction that is lower than the first metal.4. The system of claim 2 , wherein the second seat comprises a plastic.5. The system of claim 4 , wherein the plastic comprises a Polyether ether ketone (PEEK) claim 4 , a Polytetrafluoroethylene (PTFE) claim 4 , or a combination thereof.6. The system of claim 1 , wherein the first seat comprises one or more ...

Dual Air Admittance Valve with Locking Mechanism and Pressure Indicator

An apparatus to allow or stop an air flow into an enclosed environment or piping system comprises (a) a housing, (b) a first valve seat, (c) a first sealing member, (d) a second valve seat, (e) a second sealing member, (f) at least one locking mechanism configured to limit a movement of the first sealing member and/or the second sealing member; wherein the first sealing member moves away from the first valve seat when the second pressure is greater than the first pressure in a predetermined pressure difference; wherein the second sealing member moves away from the first valve seat when the third pressure is greater than the second pressure in a predetermined pressure difference; wherein the first pressure communicates with a system pressure in the piping system; and wherein the third pressure communicates with an ambient air pressure. 1. An apparatus to allow or stop an air flow into an enclosed environment or a piping system , comprising:(a) a housing having an upper flow passage, a middle flow passage, a lower flow passage, wherein the upper flow passage is above the middle flow passage, wherein the middle flow passage is above the lower flow passage, wherein a first pressure exists in the upper flow passage, wherein a second pressure exists in the middle flow passage, wherein a third pressure exists in the lower flow passage, wherein the upper flow passage;(b) a first valve seat, wherein the first valve seat is between the upper flow passage and the middle flow passage, and wherein a at least one opening is formed on the first valve seat;(c) a first sealing member, wherein the first sealing member is configured and dimensioned to substantially cover the at least one opening of the first valve seat, wherein the first sealing member can move upwardly and downwardly above the first valve seat;(d) a second valve seat, wherein the second valve seat is between the middle flow passage and the lower flow passage, and wherein a at least one opening are formed on the ...

DIAPHRAGM VALVE AND FLOW RATE CONTROL DEVICE

A diaphragm valve includes: a valve body having flow paths of fluids formed therein and having a diaphragm-arrangement portion on one surface; a diaphragm arranged in the diaphragm-arrangement portion and can open and close the flow path and adjust the opening degree of by elastic deformation; and a driving unit having a stem for pressing the diaphragm to elastically deform and an actuator for driving the stem, wherein the stem is axially movably held via a resin sleeve by a bonnet fixed to the valve body side. 1. A diaphragm valve comprising:a valve body having a flow path formed therein and a diaphragm-arrangement portion on one surface;a diaphragm arranged in the diaphragm-arrangement portion and can open and close the flow path and adjust the opening degree by elastic deformation; anda driving unit having a stem for pressing the diaphragm to elastically deform the diaphragm and an actuator for driving the stem;wherein the stem is axially movably held via a resin sleeve by a bonnet fixed to the valve body.2. The diaphragm valve according to claim 1 , wherein the resin sleeve is made of any one of polyacetal claim 1 , ultrahigh molecular weight polyethylene claim 1 , fluororesin claim 1 , and phenol resin.3. The diaphragm valve according to claim 1 , wherein the actuator is a piezoelectric actuator.4. A flow rate control device comprising the diaphragm valve as defined in .5. A fluid control device comprising a plurality of fluid devices that is arranged claim 1 , the plurality of fluid devices including the diaphragm valve as defined in .6. (canceled) The present invention relates to a diaphragm valve, a flow rate control device, a fluid control device, and a semiconductor manufacturing apparatus.For flow control of process gases used in semiconductor manufacturing processes or the like, mass flow controllers are widely used. Such a mass flow controller, for example, in the case of a pressure type mass flow controller, is configured to measure a mass flow rate by ...

CHECK VALVE WITH FLASH SEAL

Check valve assemblies for fluid flow sets and devices are provided. The check valve assembly includes an inlet body including a fluid inlet, first and second seal beads, and a central channel. An outlet body includes a fluid outlet and a stem having a centering post, the centering post received by the central channel of the inlet body. A seal includes inner and outer rings, wherein the inner ring is configured to engage with the first seal bead and the outer ring is configured to engage with the second seal bead in a fully sealed position of the check valve assembly. Fluid flow sets and methods for manufacturing check valve assemblies are also provided. 1. A check valve assembly , comprising:an inlet body comprising a fluid inlet, first and second seal beads, and a central channel;an outlet body comprising a fluid outlet and a stem having a centering post, the centering post configured to be received by the central channel of the inlet body; anda seal comprising inner and outer rings, wherein the inner ring is configured to engage with the first seal bead and the outer ring is configured to engage with the second seal bead in a fully sealed position of the check valve assembly.2. The check valve assembly of claim 1 , wherein a height of the first seal bead and a thickness of the inner ring equals a height of the second seal bead and a thickness of the outer ring.3. The check valve assembly of claim 2 , wherein the height of the first seal bead is less than the height of the second seal bead.4. The check valve assembly of claim 2 , wherein the thickness of the outer ring is less than the thickness of the inner ring.5. The check valve assembly of claim 1 , wherein the first seal bead is a circular rib extending orthogonally from an inner surface of the inlet body and disposed around the central channel.6. The check valve assembly of claim 5 , wherein the second seal bead is a circular rib extending orthogonally from the inner surface of the inlet body and disposed ...

EROSION RESISTANT STEAM VALVE

A steam valve includes a housing defining a steam inlet and steam outlet in fluid communication with a valve cavity, and an annular valve seat disposed within the valve cavity. A control valve is configured to selectively engage the valve seat. The steam valve further includes a stop valve configured to selectively engage the valve seat. The steam valve includes a pressure seal head configured to receive the stop valve. The pressure seal head includes an elongated body having a bore extending longitudinally through the body; and a nose piece extending from an end of the elongated body. The nose piece has at least a tapered end portion and a bore extending longitudinally therethrough. The bore of the nose piece is longitudinally with the bore of the elongated body. The nose piece is formed of a first material which has greater erosion properties than a second material forming the elongated body. 1. A pressure seal head of a steam valve , the pressure seal head comprising:an elongated body having a bore extending longitudinally through the body; anda nose piece extending from an end of the elongated body, the nose piece having at least a tapered end portion and a bore extending longitudinally therethrough and configured to longitudinally align with the bore of the elongated body;wherein the nose piece is formed of a first material having greater erosion resistance properties than a second material forming the elongated body.2. The pressure seal head of claim 1 , wherein the first material comprises at least one of high chromium alloy claim 1 , cobalt based alloy claim 1 , cobalt/chromium alloy claim 1 , tungsten alloy claim 1 , and titanium alloy.3. The pressure seal head of claim 1 , wherein the second material comprises a low chromium alloy.4. The pressure seal head of claim 1 , wherein the nose piece integrally extends from the elongated body.5. The pressure seal head of claim 1 , wherein the nose piece is configured to be removably and replaceably attached to the ...

Multi-Part Valve Assembly

The present disclosure discloses a multi-component valve system for use in pumps such as fracking pumps for use in subterranean resource production. The assembly includes an insert retainer having a retainer head and a retainer pin. The retainer pin has an upper section extending below the retainer head and a grooved center section below the upper section. A valve is centered on the upper section of the retainer pin. An insert is located on the valve. A guide has a central portion centered on the upper section of the retainer pin and four legs extending from the central portion. A collar has a flange and a collar body that is swaged into the center section of the retainer pin.

SYMMETRIC FLOW VALVE FOR HIGHER FLOW CONDUCTANCE

Embodiments of symmetric flow valves for use in a substrate processing chamber are provided herein. In some embodiments, a symmetric flow valve includes a valve body having sidewalls, a bottom plate, and a top plate that together define an interior volume, wherein the top plate includes one or more axisymmetrically disposed openings; a poppet disposed in the interior volume, wherein the poppet includes a central opening and a plurality of portions configured to selectively seal the one or more axisymmetrically disposed openings of the top plate when the symmetric flow valve is in a closed position; and a first actuator coupled to the poppet to position the poppet within the interior volume in at least an open position, where the poppet is spaced apart from the top plate to allow flow through the one or more axisymmetrically disposed openings of the top plate, and the closed position. 1. A symmetric flow valve for use in a substrate processing chamber , comprising:a valve body having sidewalls, a bottom plate, and a top plate that together define an interior volume, wherein the top plate includes one or more axisymmetrically disposed openings, and wherein the bottom plate includes an opening configured to interface with a pump port;a poppet disposed in the interior volume, wherein the poppet includes a central opening and a plurality of portions configured to selectively seal the one or more axisymmetrically disposed openings of the top plate when the symmetric flow valve is in a closed position; anda first actuator coupled to the poppet to position the poppet within the interior volume in at least an open position, where the poppet is spaced apart from the top plate to allow flow through the one or more axisymmetrically disposed openings of the top plate, and the closed position.2. The symmetric flow valve of claim 1 , wherein the one or more axisymmetrically disposed openings comprises three openings.3. The symmetric flow valve of claim 1 , wherein the plurality of ...

Threadless valve

A check valve may include a valve body forming a central passage extending from a first side of the valve body to a second side of the valve body. A valve pin may be located within the central passage, where the valve pin includes a sealing head that selectively contacts a valve seat of the valve body to control flow of a fluid through the central passage. A spring may be included, where the spring has a first end that is fixed relative to the valve pin and a second end fixed to a spring seat. The valve body and the spring seat may be fixed to one another without the use of threads.

ELECTRONIC VAPORISER SYSTEM

An electronic cigarette vaporiser that includes an air pressure valve or device to enable excess air to escape from an e-liquid reservoir in the vaporiser during pressurized filling of the vaporizer with e-liquid. If the vaporizer includes a ceramic cell, then the air pressure device is the wall of the ceramic cell and the reservoir is the chamber arranged outside of the external wall of the ceramic cell. 1. An electronic cigarette vaporiser that includes an air pressure valve or device to enable excess air to escape from an e-liquid reservoir in the vaporiser during pressurized filling of the vaporizer with e-liquid.2. The electronic vaporiser of in which the reservoir is a child reservoir and is filled by a parent reservoir claim 1 , the parent reservoir being a cartridge that is removable from the vaporiser or a case that stores claim 1 , re-fills and re-charges the vaporiser.3. The electronic vaporiser of in which the child reservoir supplies e-liquid to enable an atomizing unit to draw in controlled amounts of e-liquid for vaping.4. The electronic vaporiser of in which the parent reservoir is a user-removable and replaceable claim 3 , sealed or closed e-liquid capsule or cartridge claim 3 , of capacity 10 mL or less claim 3 , and is slotted into or otherwise used by the vaporiser or a portable re-fill/re-charge case for the vaporiser claim 3 , and a fluid transfer mechanism operates to transfer e-liquid from the capsule or cartridge into the child reservoir in the vaporiser claim 3 , of capacity 3 mL or less.5. The electronic vaporiser of in which the vaporiser includes a ceramic cell and the air pressure device is the wall of the ceramic cell.6. The electronic vaporiser of in which the ceramic cell includes a cylindrical wicking cylinder with a cylindrical bore and with an embedded heating coil wound within the bore.7. The electronic vaporiser of in which the reservoir is a chamber arranged outside of the external wall of the ceramic cell.8. The electronic ...

FLOW CONTROL VALVE FOR FLOW CONTROLLER

A flow control valve for a flow controller includes a valve main body provided with an open-top valve chamber hole, a metal diaphragm valve element, a lower support cylinder having notches facing each other, an upper support cylinder attached to the lower support cylinder, a support frame horizontally disposed through the notches of the lower support cylinder, a disc spring placed between the support frame and a bottom of the lower support cylinder, a lower cradle placed on the support frame, a piezoelectric element inserted into the support cylinder above the lower cradle, a guide fixed to the valve main body together with the support frame with the support cylinder being inserted through the guide cylinder in a vertically movable manner. The support cylinder is pressed upward by the extension of the piezoelectric element, whereby the metal diaphragm valve element is separated from the valve seat by the elastic force. 1. A flow control valve for a flow controller , comprising:a valve main body provided with an open-top valve chamber hole having a valve seat on a bottom, a fluid inlet passage communicating with the valve chamber hole, and a fluid outlet passage communicating with the valve chamber hole;a metal diaphragm valve element in an inverted dish shape disposed above the valve seat to face the valve seat, with an outer periphery being hermetically fixed to the bottom of the valve chamber hole;a pressing screw screwed and inserted into the valve chamber hole to press and fix the outer periphery of the metal diaphragm valve element;a lower support cylinder inserted through the pressing screw into the valve chamber hole, provided with a diaphragm presser below a bottom wall at a tip portion, and also having, on a side wall, rectangular through notches extending from an upper end of the side wall to an intermediate portion of the side wall;an upper support cylinder in a cylindrical shape screwed and attached to an upper end portion of the lower support cylinder ...

ELECTRONIC VAPORISER SYSTEM

An e-liquid cartridge or other form of parent reservoir designed to supply e-liquid to an electronic cigarette vaporiser, in which the cartridge includes an air pressure valve. The air pressure valve is designed so that as the fluid level inside the cartridge/reservoir falls, atmospheric pressure enables the air pressure valve to allow air to flow into the cartridge/reservoir and ensure equalisation of the air pressure. The valve is an air-porous e-liquid impermeable PTFE or PTFE-coated layer or membrane. 1. An e-liquid cartridge or other form of parent reservoir designed to supply e-liquid to an electronic cigarette vaporiser , in which the cartridge includes an air pressure valve.2. The e-liquid cartridge of in which the air pressure valve is designed so that as the fluid level inside the cartridge/reservoir falls claim 1 , atmospheric pressure enables the air pressure valve to allow air to flow into the cartridge/reservoir and ensure equalisation of the air pressure.3. The e-liquid cartridge of that claim 1 , in use claim 1 , engages with a fluid transfer mechanism that extracts e-liquid from the cartridge4. The e-liquid cartridge of in which the valve is air-permeable but impermeable to e-liquid.5. The e-liquid cartridge of in which the valve is made of an oleophobic material.6. The e-liquid cartridge of in which the valve is made of a hydrophobic or super-hydrophobic material.7. The e-liquid cartridge of in which the valve is an air-porous claim 1 , e-liquid impermeable layer or membrane that permits air pressure equalisation within the cartridge.8. The e-liquid cartridge of in which the valve is an air-porous e-liquid impermeable PTFE or PTFE-coated layer or membrane.9. The e-liquid cartridge of in which PTFE layer or membrane includes on its air-facing side strands of polypropylene or another plastic that increases the surface area of the air-interface and/or facilitates welding to the body of the cartridge10. The e-liquid cartridge of in which the valve is a ...

Solids-Handling Equipment

A closure component for solids-handling equipment includes a closure body configured to close a solids flow path by displacement of the closure body along a stroke axis and a removable metallic sealing element attached to the closure body. The metallic sealing element is configured sealingly to engage an endless metallic seat spaced radially outwardly from the stroke axis when the closure body closes the solids flow path. The closure body includes or defines at least one locating formation to engage and locate the metallic sealing element. The least one locating formation is positioned radially outwardly from the stroke axis and more radially outwardly from the stroke axis than at least a portion of the metallic sealing element so that at least a portion of the metallic sealing element is positioned between the locating formation and the stroke axis, thereby correctly to locate the metallic sealing element in position relative to the closure body or relative to the stroke axis during fitting of the metallic sealing element to the closure body. 1. A closure component for solids-handling equipment , the closure component includinga closure body configured to close a solids flow path by displacement of the closure body along a stroke axis; anda removable metallic sealing element attached to the closure body and configured sealingly to engage an endless metallic seat spaced radially outwardly from the stroke axis when the closure body closes said solids flow path,the closure body including or defining at least one locating formation to engage and locate the metallic sealing element, said at least one locating formation being positioned radially outwardly from the stroke axis and more radially outwardly from the stroke axis than at least a portion of the metallic sealing element so that at least a portion of the metallic sealing element is positioned between the locating formation and the stroke axis, thereby correctly to locate the metallic sealing element in position ...

Sealing Assembly for a Knife Gate Valve

Embodiments of the invention provide a knife gate valve for flow along a flow path. The knife gate valve can include a body structure that includes a gate passage, a gate disposed to move within the gate passage between open and closed positions to selectively open or close a fluid aperture, and a gate seat configured to engage a free end and lateral edges of the gate. A transverse element can be formed from resilient material and can extend laterally across the gate passage to form a seal with a first side of the gate and with the gate seat.

BACKFLOW PREVENTION DEVICE

The present application provides a backflow prevention device, and relates to a backflow prevention technical field. Such a backflow prevention device includes a shell seat, a one-way mechanism and a flow controller. The shell seat is provided with a water channel therein, the one-way mechanism is assembled in the water channel, and the flow controller is assembled in the water channel and located upstream of the one-way mechanism. When the water flows through in a forward direction, the water first passes through the flow controller, and then pushes a movable plug of the one-way mechanism to move forward, so that the water flows forward from a periphery of the movable plug along the water channel and finally passes through a bottom cover of the one-way mechanism. 1100110200110300110200. A backflow prevention device , comprising a shell seat () in which a water channel () is disposed , a one-way mechanism () assembled in the water channel () and a flow controller () assembled in the water channel () and located upstream of the one-way mechanism () ,{'b': 200', '230', '100', '220', '230', '210', '220', '110', '110', '130, 'wherein the one-way mechanism () comprises a bottom cover () assembled on the shell seat (), an elastic member () supported on the bottom cover () and a movable plug () that is supported on the elastic member () and can move forward and backward relative to the water channel (), and a side wall of the water channel () is provided with a plurality of guide rib plates () that are arranged uniformly.'}2400100300. The backflow prevention device of claim 1 , wherein the backflow prevention device further comprises a filter seat () assembled on the shell seat () and located upstream of the flow controller ().3400300400410. The backflow prevention device of claim 2 , wherein the filter seat () is a bamboo-hat-shaped geometry having an opening facing the flow controller () claim 2 , and a conical surface of the filter seat () is provided with a plurality ...

SOLENOID VALVE, IN PARTICULAR FOR A MOTOR VEHICLE PNEUMATIC SUSPENSION SYSTEM

An electromagnetic valve, in particular for a motor vehicle air spring system, has a valve closing body which, in its basic position, shuts off a valve outlet and, for this purpose, is pressed against a valve seat by a restoring spring. To assist the opening process, a valve spring is also provided. The valve spring is supported at one side on a valve seat body and at the other side on a spring pot, which is arranged on the valve closing body. Preferably, a tubular section of the spring pot bears, non-displaceably in a lateral direction, directly against the valve closing body. An elastic sealing element may either be arranged on the end side of the valve closing body, or held laterally by a section, which forms an enclosure, of the spring pot. 1. An electromagnetic valve , for a motor vehicle air spring system , having a valve housing in which there are arranged a valve closing body and a valve seat body which has a valve seat and a valve outlet , wherein the valve closing body is displaceable relative to the valve seat in an opening and a closing direction in order to open or close the valve outlet , having a magnet armature which forms an assembly together with the valve closing body , and having a restoring spring which acts on the assembly in a closing direction and having a valve spring which acts on the assembly in an opening direction , wherein , to an end of the valve closing body facing toward the valve seat , there is fastened an elastic sealing element which bears sealingly against the valve seat , wherein a spring pot is provided on the valve closing body , which spring pot has a tubular section which surrounds the valve closing body and which has a collar on which the valve spring is supported.2. The electromagnetic valve as claimed in claim 1 , wherein the tubular section of the spring pot bears claim 1 , non-displaceably in a lateral direction claim 1 , directly against the valve closing body.3. The electromagnetic valve as claimed in claim 2 , ...

Needle tip and seat for a choke valve

Embodiments of the present disclosure relate to a choke valve that includes a choke body, a choke trim disposed in the choke body, where the choke trim is configured to adjust a cross-sectional area of a flow path in the choke body to adjust a fluid flow through the choke valve, a needle of the choke trim disposed in the flow path of the fluid flow, where the needle includes a first portion having a superhard material, a seat of the choke trim, where the needle is configured to move along an axis extending through an opening of the seat to adjust the fluid flow through the choke valve.

Butterfly valve and method of manufacturing the same

A butterfly valve which may enhance corrosion resistance or acid resistance with keeping its strength, have light weight and realize mass production, and method of manufacturing the same. are disclosed. The butterfly valve comprises a body in which an inserting space is formed and a disk inserted into the inserting space of the body, wherein fluid flow is opened or closed in response to rotation of the disk. Here, the disk includes a disk body formed of a metal, and at least one plastic layer formed on the disk body.

VALVE WITH PRESS-FIT INSERT

A shear seal includes a seal plate having a first seal surface and a sliding seal assembly having a second seal surface, and at least one of the first and second sealing surfaces comprise an insert comprising a material different than that of the seal plate or the sliding seal connected to the seal plate or sliding seal assembly by a compressed member disposed between the insert and the adjacent surface of seal plate or sliding seal assembly. 1. A shear seal , comprising:a seal plate having a first seal surface; anda sliding seal assembly having a second seal surface; whereinat least one of the first and second sealing surfaces comprise an insert comprising a material different than that of the seal plate or the sliding seal connected to the seal plate or sliding seal assembly by a compressed member disposed between the insert and the adjacent surface of seal plate or sliding seal assembly.2. The shear seal of claim 1 , wherein the compressed member comprises an annular ring.3. The shear seal of claim 1 , wherein the compressed member comprises at least one of PEEK claim 1 , carbon filled PEEK claim 1 , or claim 1 , Teflon or Delrin.4. The shear seal of claim 1 , wherein the insert comprises at least one of a single crystal material of a carbide.5. The shear seal of claim 1 , wherein the compressed member comprises a right annular ring.6. The shear seal of claim 1 , wherein the compressed member is an annular member having a non-uniform thickness in a radial direction thereof.7. The shear seal of claim 1 , wherein the insert is received in a recess of the seal plate.8. The shear seal of claim 1 , wherein the insert is received over the sliding seal assembly.9. The shear seal of claim 1 , wherein the insert comprises at least one of a ruby or sapphire.10. A fluid operated fluid circuit component comprising:a shear seal, comprising:a seal plate having a first seal surface; anda sliding seal assembly having a second seal surface; whereinat least one of the first and ...

VALVE

This invention relates to a valve for use in a pipe used for transporting a substance. The valve includes a rotatable disc, a valve seat, and an actuator. The actuator is adapted to rotate the rotatable disc between a closed position, where the rotatable disc is substantially perpendicular to the longitudinal axis of the pipe, and whereby the edges of the rotatable disc are adapted to seal against the valve seat, thus preventing the flow of the substance through the valve, and an open position, wherein the rotatable disc is substantially parallel to the longitudinal axis of the pipe, thus allowing for the flow of the substance through the valve. The valve also includes a protective portion adapted to cover at least a portion of the valve seat during the flow of the substance through the valve, when the valve is open. 114-. (canceled)15. A valve for use in a pipe used for transporting a substance , said valve including:a) a rotatable disc,b) a valve seat, i. a closed position, wherein the rotatable disc is substantially perpendicular to the longitudinal axis of the pipe, and whereby the edges of the rotatable disc are adapted to seal against the valve seat, thus preventing the flow of the substance through the valve, and', 'ii. an open position, wherein the rotatable disc is substantially parallel to the longitudinal axis of the pipe, thus allowing the flow of the substance through the valve,, 'c) an actuator for rotating the rotatable disc betweend) a movable protective portion fixed substantially at right angles with respect to the rotatable disc, the arrangement and construction being such that the protective portion is adapted to cover at least a portion of the valve seat during the flow of the substance through the valve, when the valve is open.16. A valve for use in a pipe used for transporting a substance claim 15 , as claimed in claim 15 , wherein the actuator includes a rod claim 15 , upon which the rotatable disc is mounted claim 15 , and whereby the valve ...

FLOW CONTROL VALVE SEAL AND FLOW CONTROL VALVE DEVICE

To provide a flow control valve seal that is manufactured at a low cost, that makes wear damage of a rotor with which the flow control valve seal slidably contacts less, and that is superior in its low leak performance, low friction performance, and low wear performance. A seal () is installed in a flow control valve device () including a housing () having an introduction part () that receives a cooling water from an internal combustion engine, and a resin rotor () disposed in the housing () and having a spherical outer peripheral surface (), the rotor () being rotated relative to the housing (). The seal () is disposed between the introduction part () and the rotor () in the housing () and slidably contacts with the outer peripheral surface () of the rotor (). The seal () is an injection molded body of a resin composition having injection-moldable fluororesin as a base resin. The fluororesin is at least one resin selected from among a tetrafluoroethylene-perfluoro alkylvinyl ether copolymer resin, a tetrafluoroethylene-hexafluoropropylene copolymer resin, and a tetrafluoroethylene-ethylene copolymer resin. 1. A flow control valve seal that is installed in a flow control valve device comprising a housing having an introduction part that receives a cooling water from an internal combustion engine and a discharge part that discharges the cooling water , and a resin rotor disposed in the housing and having an outer peripheral surface formed in a spherical or cylindrical shape , the rotor being rotated relative to the housing , wherein:the flow control valve seal is disposed between the introduction part or the discharge part and the rotor in the housing;the flow control valve seal is formed in a ring-like shape that slidably contacts with the outer peripheral surface of the rotor;the flow control valve seal is an injection molded body of a resin composition having injection-moldable fluororesin as a base resin; andthe fluororesin is at least one resin selected from ...

HIGH PERFORMANCE SUBSEA PRESSURE REGULATOR

A subsea pressure regulator includes: a spring housing; a spring disposed therein; a body having a bore formed therethrough and inlet and outlet ports; drive and balance adapters connected to opposite ends of the body; drive and balance plungers; and a supply seal assembly. Each plunger has: a piston shoulder engaged with the respective adapter, a first portion in fluid communication with an outlet chamber, and a second portion in fluid communication with ambient pressure. The supply seal assembly includes a seal carrier connected to the plungers and a seal bore formed therethrough. The spring biases the seal carrier toward an open position. The drive plunger is operable to move the seal carrier to a closed position in response to sufficient pressure in the outlet chamber overcoming the spring bias. 1. A subsea pressure regulator , comprising: a spring housing; and', 'a first spring disposed in the spring housing; and, 'a spring sub assembly, comprising a body having a bore formed therethrough and inlet and outlet ports transverse to the bore;', 'drive and balance adapters connected to opposite ends of the body,', 'wherein an outlet chamber is formed between the adapters and by the bore of the body;', 'drive and balance plungers, each plunger having: a piston shoulder engaged with the respective adapter, a first portion in fluid communication with the outlet chamber, and a second portion in fluid communication with ambient pressure; and', 'a supply seal assembly comprising a seal carrier connected to the plungers and having a seal bore formed therethrough transverse to the bore of the body;, 'a body sub assembly connected to the spring housing and comprising the first spring biases the seal carrier toward an open position, and', 'the drive plunger is operable to move the seal carrier to a closed position in response to sufficient pressure in the outlet chamber overcoming the first spring bias., 'wherein2. The regulator of claim 1 , wherein:the spring sub assembly ...

SHAPE MEMORY ALLOY VALVE

A valve apparatus employs a shape memory alloy. In another aspect, a shape memory member acts as a lock or trigger in combination with a separate actuator or spring to move a valve. Still another aspect uses an externally mounted shape memory member to rotate a valve if an unsafe condition causes movement of the member. 1. A valve apparatus comprising:a fluid valve;a housing including an internal fluid-carrying passageway within which the fluid valve is located, the housing further including an external engagement surface;a shaft attached to and operably moving with the fluid valve, the shaft having an abutment surface located external to the housing; anda shape memory member located external to the housing and engaging the engagement surface of the housing in a first operating condition, the shape memory member also engaging the abutment surface of the shaft in the first operating condition, and the shape memory member disengaging at least one of the surfaces when in a different operating condition to allow the fluid valve to move, the operating conditions being changeable due to a change of at least one of: (a) temperature, and (b) electrical current.2. The valve apparatus of claim 1 , further comprising a spring being a separate part from the shape memory member claim 1 , the spring automatically changing an orientation of the fluid valve when the shape memory member is heated to disengage the abutment surface of the shaft.3. The valve apparatus of claim 2 , wherein the spring is a torsion spring which rotates the fluid valve within the housing.4. The valve apparatus of claim 1 , wherein the shape memory member has a substantially inverted U-shape in at least one of the operating conditions claim 1 , and the shape memory member is free of a coiled loop.5. The valve apparatus of claim 1 , wherein the shape memory member is a wire which is environmentally heat activated without use of electricity claim 1 , such that the shape memory member automatically releases ...

Dual Piston Valve for Flow Control of Two Distinct Liquid Fuels

A dual piston valve system to control and contain two distinct liquid fuels available to the valve while allowing full flow through the valve of whichever one of the fuels is selected and preventing any cross leakage between the fuels.

SHAPE MEMORY ALLOY VALVE

A valve apparatus employs a shape memory alloy. In another aspect, a shape memory member acts as a lock or trigger in combination with a separate actuator or spring to move a valve. Still another aspect uses an externally mounted shape memory member to rotate a valve if an unsafe condition causes movement of the member. 1. A valve apparatus comprising:(a) a valve;(b) a housing including an internal passageway within which the valve is located;(c) a shape memory trigger movable in response to environmental and external heat;(d) an actuator automatically changing a flow condition of the valve based upon movement of the shape memory trigger; and (i) a vehicular fuel tube connected to the housing with the valve blocking fuel flowing from the tube;', '(ii) a manufacturing plant tube connected to the housing with the valve blocking chemicals flowing from the tube; or', '(iii) a building sprinkler connected to the housing with the valve opening to allow water to flow to the sprinkler., '(e) the heat causing the valve to move to a fail-safe position on at least one of the following2. The valve apparatus of claim 1 , wherein the actuator rotates the valve if the heat moves the shape memory trigger.3. The valve apparatus of claim 1 , wherein the actuator is a spring which is separate from the shape memory trigger and is not a shape memory alloy.4. The valve apparatus of claim 1 , wherein the housing is polymeric and the shape memory trigger is a metallic and unlooped wire.5. The valve apparatus of claim 1 , wherein the shape memory trigger and actuator are mounted to an outside of the housing so that the shape memory trigger is exposed to ambient air.6. The valve apparatus of claim 1 , wherein the vehicular fuel tube is connected to the housing.7. The valve apparatus of claim 1 , wherein the chemical-carrying manufacturing plant tube is connected to the housing.8. The valve apparatus of claim 1 , wherein the water-carrying building sprinkler is connected to the housing.9. The ...

VALVE SEAT STIFFENER

A valve seat device including a valve seat and a seat stiffener, the seat stiffener formed from a non-elastomeric material and positioned on a radially outward-facing surface of the valve seat, an outer diameter of the radially outward-facing surface of the valve seat being greater than an inner diameter of the seat stiffener. 1. A valve seat device comprising:a valve seat; and comprising a solid cross-section, the cross-section taken along an axial centerline of the valve seat device;', 'positioned on a radially outward-facing surface of the valve seat, an outer diameter of the radially outward-facing surface of the valve seat being greater than an inner diameter of the seat stiffener; and', 'positioned radially inward from a radially inward-facing surface of the valve seat removable from the valve seat; and', 'configured to prevent radial expansion of the valve seat., 'a ring-shaped seat stiffener, the seat stiffener formed from a non-elastomeric material;'}2. The device of claim 1 , wherein the valve seat is ring-shaped.3. (canceled)4. The device of claim 1 , wherein the seat stiffener is welded into an annular ring from a single length of wire.5. (canceled)6. The device of claim 1 , wherein the valve seat further defines a horizontal axis claim 1 , a thickness of the seat stiffener in an axial direction parallel to the horizontal axis being less than about 25% of an overall axial height of the valve seat.7. The device of claim 1 , wherein the seat stiffener is formed from steel.8. The device of claim 1 , wherein the seat stiffener is formed from a material having a modulus of elasticity of at least about 15 claim 1 ,000 claim 1 ,000 psi.9. The device of claim 8 , wherein the seat stiffener is formed from a material having a modulus of elasticity of about 28 claim 8 ,000 claim 8 ,000 psi.10. The device of claim 1 , wherein the radially outward-facing surface of the valve seat defines a groove sized to receive the seat stiffener.11. The device of claim 1 , wherein ...

Valves Having Protective Coatings

A shear valve for use in a high performance liquid chromatography system. The shear valve includes a first valve member having a plurality of first fluid-conveying features, and a second valve member having one or more second fluid-conveying features. The second valve member is movable, relative to the first valve member, between a plurality of discrete positions such that, in each of the discrete positions, at least one of the one or more second fluid-conveying features overlaps with multiple ones of the first fluid conveying features to provide for fluid communication therebetween. At least one of the first and second valve members is at least partially coated with a protective coating that includes an adhesion interlayer and a diamond-like carbon (DLC) layer. The DLC layer is deposited on the adhesion interlayer via filtered cathodic vacuum arc (FCVA) deposition. 1. A shear valve for use in a high performance liquid chromatography system , the shear valve comprising:a first valve member having a plurality of first fluid-conveying features;a second valve member having one or more second fluid-conveying features,wherein the second valve member is movable, relative to the first valve member, between a plurality of discrete positions such that, in each of the discrete positions, at least one of the one or more second fluid-conveying features overlaps with multiple ones of the first fluid conveying features to provide for fluid communication therebetween,wherein at least one of the first and second valve members is at least partially coated with a protective coating comprising an adhesion interlayer and a diamond-like carbon (DLC) layer deposited on the adhesion interlayer via filtered cathodic vacuum arc (FCVA) deposition.2. The shear valve of claim 1 , wherein the adhesion interlayer is deposited on the at least one of the first and second valve members via FCVA deposition.3. The shear valve of claim 1 , wherein the adhesion interlayer comprises an interlayer ...

LEAD-FREE HIGH TEMPERATURE/PRESSURE PIPING COMPONENTS AND METHODS OF USE

A piping component for controlling the flow of fluids that includes a piping body having an inlet end and an outlet end, including methods of operating such components within a piping system. The piping body may be sized for fluids operating at temperatures from approximately 350° F. up to approximately 500° F., and up to approximately 650° F. In addition, the piping body is made from a silicon-copper alloy consisting essentially of less than 16% zinc, less than trace amounts of lead, less than trace amounts of bismuth, 2 to 6% silicon and a balance of copper (by weight). In certain aspects, less than 0.09% of lead and/or less than 0.09% bismuth are contained in the silicon-copper alloy. 1. A piping component , comprising:a piping component for controlling the flow of fluids, the piping component comprising a piping body having an inlet end and an outlet end,wherein the piping body is sized for fluids operating at a temperature up to approximately 500° F., andfurther wherein the piping body is made from a silicon-copper alloy consisting essentially of less than 16% zinc, less than 0.25% lead, less than 0.25% bismuth, 2 to 6% silicon and a balance of copper (by weight).2. The piping component according to claim 1 , wherein the piping body is sized for fluids operating at a temperature up to approximately 650° F.3. The piping component according to claim 1 , wherein the silicon-copper alloy consists essentially of less than 7% zinc claim 1 , less than 0.25% lead claim 1 , less than 0.25% bismuth claim 1 , 2 to 6% silicon and a balance of copper (by weight).4. The piping component according to claim 1 , wherein the silicon-copper alloy consists essentially of less than 4% zinc claim 1 , less than 0.25% lead claim 1 , less than 0.25% bismuth claim 1 , 2 to 6% silicon and a balance of copper (by weight).5. The piping component according to claim 1 , wherein the piping component is selected from the group consisting of a ball valve claim 1 , a gate valve and an elbow ...

Industrial High Pressure Hand Valve

A safe, economical, lightweight, ergonomic, and easy to use improved hand valve capable of handling high pressures with either air or liquid media for use in industrial environments. The industrial high pressure hand valve is of the type similar to a floating ball check valve, but with a unique way of achieving the sealing engagement that provides a completely positive shutoff so that absolutely no leakage of the air or liquid media occurs whether operated at high or low pressures. The industrial high pressure hand valve is comprised of a valve body, an ergonomic handle grip, a live swivel, a hose barb, and a nozzle for either air or liquid media. The industrial high pressure hand valve is designed in such a way that other accessory components, such as extended nozzles, can be threadably connected thereto. A handle connected to the valve body controls the flow of the media and when released provides an automatic and completely positive shutoff. 1. An industrial high pressure hand valve that provides a completely positive shutoff comprising:a valve body;an ergonomic handle grip;a live swivel;a hose barb;a nozzle;wherein the valve body is comprised of a handle attached to the valve body via a coiled pin, a stem, a stem adapter, a stem spring, and a rotor clip retaining ring which retains the stem within the valve body;wherein said valve body is further comprised of an internal bore to allow for the flow of media through the valve body, internal threads located at the inflow and outflow ends of the valve body for connecting of said ergonomic handle grip and nozzle thereto, a metallic ball contained within a ball receiving bore of the valve body which includes a recessed portion for when the valve is in an open position and the metallic ball is unseated, a seat insert, and seat insert O-ring;wherein said seat insert has a diameter that is slightly larger than the diameter of the seat insert receiving portion of the valve body so that an interference fit must be used to ...

VALVE SEAT APPARATUS FOR USE WITH FLUID VALVES

A valve seat apparatus for use with fluid valves is described herein. An example valve seat apparatus includes a seat ring having a central passage therethrough and an outer wall. The outer wall comprises a threaded portion, having a first diameter, to engage a cage of a fluid valve. The outer wall also includes a sealing portion to capture a seal assembly between the sealing portion and a surface of a body of the fluid valve. The sealing portion has a second diameter greater than the first diameter. The outer wall of the example valve seat apparatus further includes a flange portion to capture the seal assembly between the cage and the flange portion. The flange portion extends toward the surface of the body and the sealing portion is to be positioned between the flange portion and the threaded portion. The flange portion has a third diameter greater than the second diameter. 1. An apparatus comprising: a main portion, an inner wall of the main portion having a first inner diameter; and', 'an extension extending from the main portion, an inner wall of the extension having a second inner diameter greater than the first inner diameter; and, 'a cage to be disposed in a fluid valve, the cage including a threaded portion to engage the cage, the threaded portion having a first outer diameter;', 'a sealing portion to capture a seal assembly between the sealing portion and a surface of a body of the fluid valve, the sealing portion having a second outer diameter greater than the first outer diameter;', 'a flange portion having a third outer diameter greater than the second outer diameter, the sealing portion being between the flange portion and the threaded portion; and', 'a step between the flange portion and the sealing portion, an annular gland being defined by the step, the sealing portion and a bottom surface of the extension when the seat ring is coupled to the cage, the annular gland to receive the seal assembly., 'a seat ring to be coupled to the cage, the seat ...

BIDIRECTIONAL KNIFE GATE VALVE WITH A PERIMETER SEAT

Embodiments of the invention include a knife gate valve. The knife gate valve can include: a valve body that defines a center aperture, the valve body configured to be coupled to a conduit; a gate disposed at least partially within the valve body, the gate configured to move vertically in relation to the valve body; a seat disposed in a portion of the valve body, the seat comprising a first end and a second end; and a packing area disposed within the valve body, wherein the packing area comprises a packing element is disposed around a portion of the gate; wherein the first end of the seat and the second end of the seat terminate within the valve body between a middle of the center aperture and the packing area. Other embodiments are also included herein. 1. A knife gate valve , comprising:a valve body that defines a center aperture, the valve body configured to be coupled to a conduit;a gate disposed at least partially within the valve body, the gate configured to move vertically in relation to the valve body;a seat disposed in a portion of the valve body, the seat comprising a first end and a second end; anda packing area disposed within the valve body, wherein the packing area comprises a packing element is disposed around a portion of the gate;wherein the first end of the seat and the second end of the seat terminate within the valve body between a middle of the center aperture and the packing area.2. The knife gate valve of claim 1 , wherein the first end of the seat and the second end of the seat terminate adjacent to the packing area.3. The knife gate valve of claim 1 , wherein the first end of the seat and the second end of the seat terminate on opposite sides of the gate.4. The knife gate valve of claim 1 , wherein the first end of the seat and the second end of the seat terminate above the center aperture.5. The knife gate valve of claim 1 , wherein the seat comprises a first end cap on the first end and a second end cap on the second end.6. The knife gate ...

LOW FRICTION HYDRAULIC CIRCUIT CONTROL COMPONENTS

A hydraulic control circuit component such as a valve is configured which sliding surfaces. At least one of the sliding surfaces is configured as a single crystal material, such as ruby or sapphire. 1. A hydraulic circuit component comprising at least one component having a first surface and a second component having a second surface , wherein the first and second surfaces engage in sliding contact during operation of the component , wherein at least one of the first and second surfaces comprise a crystalline material.2. The hydraulic circuit component of claim 1 , further comprising a first seal plate surface claim 1 , a second seal plate surface claim 1 , and a carrier having a first sealing element contacting the first seal plate surface ad a second sealing element contacting the second seal plate surface claim 1 , wherein the first and second sealing elements include the crystalline material at least at the contact surface thereof with the first seal plate and second seal plate surfaces.3. The hydraulic circuit component of claim 2 , wherein the first and second seal plate surfaces comprise the crystalline material.4. The hydraulic circuit of claim 3 , wherein the seal plate surfaces are provided on inserts.5. The hydraulic circuit of claim 3 , wherein at least one of the seal plate surfaces or the sealing elements comprises ruby.6. The hydraulic circuit of claim 3 , wherein at least one of the seal plate surfaces or the sealing elements comprises sapphire.7. The hydraulic circuit of claim 1 , wherein at least one of the seal plate surfaces or the sealing elements comprises a polycrystalline material.8. The hydraulic circuit of claim 7 , wherein the polycrystalline material is zirconia.9. The hydraulic circuit component of claim 1 , wherein the single crystal material is provided as an insert.10. The hydraulic circuit component of claim 1 , wherein the single crystal material is provided as a coating. This application claims benefit of U.S. provisional patent ...

CARBON-FIBER SEAT FOR A PNEUMATIC HAMMER

A carbon-fiber seat for a pneumatic hammer has a rear valve, a front valve, and a valve plate. The rear valve, the front valve, and the valve plate are made of carbon fiber materials. The rear valve has an inlet recess, an inlet passage, an exhaust annular recess, at least one exhaust port, and at least one exhaust passage. The front valve abuts the rear valve and has a communicating recess, an exhaust mount, and at least one exhaust port. The communicating recess is formed through the front valve, and communicates with the inlet recess of the rear valve. The exhaust mount is formed on and protrudes axially from the front valve around the communicating recess. The at least one exhaust port is formed in the exhaust mount such that the communicating recess communicates with the outer recess. The valve plate is deposited between the two valves. 1. A carbon-fiber seat for a pneumatic hammer comprising: a rear side;', 'a front side;', 'an external surface;', 'a center;', 'an inlet recess formed in the front side of the rear valve at the center of the rear valve;', 'an inlet passage axially formed through the rear side of the rear valve at the center of the rear valve, and communicating with the inlet recess;', 'an exhaust annular recess formed in the front side of the rear valve around the inlet recess, and having a bottom;', 'at least one exhaust port axially formed in the bottom of the exhaust annular recess; and', 'at least one exhaust passage radially formed through the external surface of the rear valve and communicating with the at least one exhaust port;, 'a rear valve made of carbon fiber materials, and having'} a rear side abutting the front side of the rear valve;', 'a front side;', 'a center;', 'a communicating recess formed through the front side and the rear side of the front valve, and communicating with the inlet recess of the rear valve;', 'an exhaust mount formed on and protruding axially from the rear side of the front valve around the communicating ...

VALVE UNIT INCLUDING A MECHANICAL COUPLER

A valve unit comprises a valve () having a valve shaft () with a rotational axis, an actuator () for, the actuator having an actuator shaft () with a rotational axis, a mechanical coupler () for rotational coupling of the actuator shaft () and the valve shaft (), the mechanical coupler () comprising a rotational axis () coinciding with the rotational axis of the actuator shaft () and the rotational axis of the valve shaft (), a first rotational member () coupled to the actuator shaft () and a second rotational member () coupled to the valve shaft (), and a bridge element (), the first and the second rotational members () having slots () for receiving engagement pins () of the bridge element (). The bridge element () has a planar shape extending from the first rotational member () to the second rotational member (), and the planar bridge element () has a body () and at least two engagement pins () projecting from the body () at each of two of opposite ends of the body () of the planar bridge element () in a parallel direction to the rotational axis () of the mechanical coupler (). The engagement pins () are engaging with the corresponding slots () in the rotational members (). The planar bridge element () comprises at least one through-hole () traversing the plane of the body () of the planar bridge element () extending from the first rotational member () to the second rotational member (). 1. Valve unit in particular for controlling the flow rate of an exhaust gas through the passage of a valve , the valve unit comprisinga valve having a valve housing, at least one valve flap, the at least one valve flap being fixedly arranged on a rotatable valve shaft having a rotational axis,an actuator for actuating the valve flap, the actuator having an actuator shaft with a rotational axis,a mechanical coupler for rotational coupling of the actuator shaft and the valve shaft, the actuator shaft and the valve shaft being coaxial, the mechanical coupler comprisinga rotational ...

VALVES, VALVE ASSEMBLIES AND APPLICATIONS THEREOF

Valves and valve assemblies are described herein employing architectures which can mitigate degradative wear mechanisms, thereby prolonging life of the assembly. In one aspect, a valve comprises a head including a circumferential surface and a valve seat mating surface. Leg members extend from the head, wherein thickness of one or more of the leg members tapers in a direction away from the head to induce laminar fluid flow around the head. The valve can also comprise a seal coupled to the circumferential surface of the head. In some embodiments, an exterior surface of the seal exhibits a radius of curvature maintaining laminar fluid flow around the valve. Additionally, the seal can overlap a portion of the valve seat mating surface, in some embodiments. 1. A valve comprising:a head including a circumferential surface and a valve seat mating surface; andleg members extending from the head, wherein thickness of one or more of the leg members tapers in a direction away from the head to produce laminar fluid flow around the head.2. The valve of claim 1 , wherein an intermediate body member is positioned between the head and leg members.3. The valve of claim 1 , wherein a transition region between the intermediate body member and the head has a radius of curvature of 0.5 mm to 5 mm.4. The valve of further comprising a seal coupled to the circumferential surface of the head.5. The valve of claim 4 , wherein the circumferential surface defines an annular groove engaging the seal claim 4 , the annular groove having a top surface and bottom surface.6. The valve of claim 5 , wherein the top surface of the annular groove extends radially beyond the bottom surface.7. The valve of claim 6 , wherein the bottom surface transitions to the valve seat mating surface.8. The valve of claim 7 , wherein the transition of the bottom surface to the valve mating surface has a radius of curvature less than the annular groove radius of curvature.9. The valve of claim 4 , wherein an exterior ...

VALVES, VALVE ASSEMBLIES AND APPLICATIONS THEREOF

Valves and valve assemblies are described herein employing architectures which can mitigate degradative wear mechanisms, thereby prolonging life of the assembly. In one aspect, a valve comprises a head including a circumferential surface and a valve seat mating surface comprising sintered cemented carbide. Leg members extend from the head, wherein thickness of one or more of the leg members tapers in a direction away from the head to induce laminar fluid flow around the head. In some embodiments, the sintered cemented carbide is an inlay coupled to the valve head. 1. A valve comprising:a head including a circumferential surface and a valve seat mating surface comprising sintered cemented carbide; andleg members extending from the head, wherein thickness of one or more of the leg members tapers in a direction away from the head to produce laminar fluid flow around the head.2. The valve of claim 1 , wherein the sintered cemented carbide is an inlay coupled to the head.3. The valve of claim 2 , wherein the inlay is a single piece of sintered cemented carbide.4. The valve of claim 2 , wherein the inlay comprises a plurality of independent radial sections.5. The valve of claim 2 , wherein the inlay is brazed to a surface of the head.6. The valve of claim 2 , wherein the inlay is mechanically coupled to the head.7. The valve of claim 2 , wherein the inlay is attached to a substrate claim 2 , and the substrate is coupled to the head.8. The valve of claim 7 , wherein the substrate is coupled to the head by at least one or welding claim 7 , mechanical locking and an adhesive.9. The valve of claim 2 , wherein the head comprises an annular recess in which the inlay is positioned.10. The valve of claim 1 , wherein an intermediate body member is positioned between the head and leg members.11. The valve of claim 1 , wherein a transition region between the intermediate body member and the head has a radius of curvature of 0.5 mm to 5 mm.12. The valve of further comprising a seal ...

Seal and Fluid Valve

A seal for use in a fluid control valve includes: a first, elastically deformable, plastic part; and a second plastic part configured as a hard seal element and connected to the first plastic part. The first and the second plastic parts form a seal assembly having a first frontal end configured to bear in a sealing manner on an actuatable valve body of the fluid control valve, and a second frontal end configured to bear in a sealing manner on a valve housing of the fluid control valve, wherein at least the first frontal end has a first end side having an encircling projecting bead configured to seal against the actuatable valve body. 121- (canceled)2242. A seal () for use in a fluid control valve () , comprising:{'b': '10', 'a first, elastically deformable, plastic part (); and'}{'b': 12', '10, 'a second plastic part () configured as a hard seal element and connected to the first plastic part (),'}{'b': 10', '12', '4', '6', '2', '8', '2', '15', '6, 'sub': II', 'I', 'I, 'wherein the first and the second plastic part (, ) together form a seal assembly () having a first frontal end (SES) configured to bear in a sealing manner on an actuatable valve body () of the fluid control valve (), and a second frontal end (SE) configured to bear in a sealing manner on a valve housing () of the fluid control valve (), wherein at least the first frontal end (SE) has a first end side (S) having an encircling projecting bead () configured to seal against the actuatable valve body ().'}2312156. The seal as claimed in claim 22 , wherein the second plastic part () is configured in the shape of a thin-walled structure which claim 22 , in the region of the bead () claim 22 , is configured to seal against the actuatable valve body ().24121510101215. The seal as claimed in claim 23 , wherein the second plastic part () claim 23 , at least in the region of the bead () claim 23 , is molded so as to be complementary to the first plastic part () claim 23 , wherein the first plastic part () ...

BACK PRESSURE REGULATION

The invention generally provides a dynamic back pressure regulator. In an exemplary embodiment, the back pressure regulator includes an inlet, an outlet, a seat disposed between the inlet and the outlet and defining at least part of a fluid pathway, and a needle displaceable relative to the seat to form a restriction region therebetween for restricting fluid flow between the inlet and the outlet. In some embodiments, the needle can include a corrosion and/or erosion resistant polymer tip. 1. A dynamic back pressure regulator comprising:an inlet,an outlet,a seat disposed between the inlet and the outlet and defining at least part of a fluid pathway;a needle displaceable relative to the seat to form a restriction region therebetween for restricting fluid flow between the inlet and the outlet,wherein the needle comprises a corrosion and erosion resistant polymer tip.2. The dynamic back pressure regulator of claim 1 , wherein the corrosion and erosion resistant polymer is selected from polyether-ether-ketone and polyimide.3. The dynamic back pressure regulator of claim 1 , wherein the needle comprises a stem connected to the tip claim 1 , the stem being made of a metal.4. The dynamic back pressure regulator of claim 3 , wherein the metal is selected from stainless steel claim 3 , MP35N claim 3 , and titanium.5. The dynamic back pressure regulator of claim 3 , wherein the tip is threadingly connected to the stem.6. The dynamic back pressure regulator of claim 3 , wherein the tip is overmolded on the stem.7. The dynamic back pressure regulator of claim 3 , wherein the stem includes barbs for mounting the tip.8. The dynamic back pressure regulator of claim 1 , wherein the seat is at least partially formed of a polymer.9. The dynamic back pressure regulator of claim 8 , wherein the polymer at least partially forming the seat is polyether-ether-ketone.10. The dynamic back pressure regulator of claim 8 , wherein the polymer at least partially forming the seat is filled with ...

BI-DIRECTIONAL ROTARY VALVE

A bi-directional cryogenic rotary valve having a housing defining a fluid passageway, a control member rotatably disposed within the fluid passageway, and a seal assembly positioned along an inner surface of the housing to provide a bubble tight seal between the housing and the control member. The rotary valve adapted to operate at or near cryogenic temperatures (i.e., at −160° C.) while maintaining an affective seal in both the forward and reverse directions. The rotary valve being capable of retrofitting against wear and operational stress sustained from repeated use and operation. 1. A bi-directional cryogenic rotary valve seal assembly comprising:an annular body having a sealing surface defining an aperture; andan annular member radially disposed around at least a portion of the body, the annular member comprising a material having a coefficient of thermal expansion of at least 30 m/m/° C.2. The valve seal assembly according to claim 1 , wherein the annular body further comprises:a hub;a first arm extending from the hub; anda second arm extending from the hub,wherein the hub, the first arm, and the second arm are coaxial, and wherein the sealing surface is disposed on a combination of the hub and an inner surface of the first arm.3. The valve seal assembly according to claim 2 , wherein the hub further comprises a radially outer surface claim 2 , the radial outer surface having a recess wherein a first sealing element is positioned.4. The seal assembly according to claim 2 , wherein the second arm further comprises a flange claim 2 , the flange having a distal cavity comprising a second sealing element positioned therein.5. The valve seal assembly according to claim 1 , wherein the sealing surface comprises a plurality of lobes.6. The valve seal assembly according to claim 5 , wherein a first of the plurality of lobes is positioned on the hub and a second of the plurality of lobes is positioned on the first arm.7. The valve seal assembly according to claim 1 , ...

Chemically bonded coated metal-to-metal seals

Oilfield tools having a metal-to-metal seal formed between a first metal surface and a second metal surface, wherein at least one of the first and second metal surfaces are at least partially coated by chemical bonding or physical deposition of a coating material that is more durable and has a lower coefficient of friction than either or both of the first and/or second metal surfaces to which the coating material is applied.

PRESSURE CONTROL VALVE AND SUPERCRITICAL FLUID CHROMATOGRAPH

A pressure control valve is provided with a pressure control block. The pressure control block has a pressure control block having an opening portion provided on one outer surface, a pressure control surface provided as a plane at a bottom portion of the opening portion, and two internal channels having openings at the respective end portions of the pressure control surface. A sheet-like valve body having elasticity and arranged so as to cover the pressure control surface is provided in the opening portion of the pressure control block. A valve body driving portion is provided on a side opposite to the pressure control surface with the valve body interposed therebetween that adjusts an amount of a gap between the valve body and the pressure control surface by pressing the valve body in a direction perpendicular to the pressure control surface. The pressure control surface has higher hardness than a hard material. 1. A pressure control valve comprising:a pressure control block having an opening portion provided on one outer surface, a pressure control surface provided as a plane at a bottom portion of the opening portion, and two internal channels having openings at respective end portions of the pressure control surface;a sheet-like valve body having elasticity and arranged so as to cover the pressure control surface; anda valve body driving portion provided on a side opposite to the pressure control surface with the valve body interposed therebetween, wherein the valve body driving portion is driven in a direction perpendicular to the pressure control surface so that an amount of a gap between the valve body and the pressure control surface is adjusted by pressing the valve body in the direction perpendicular to the pressure control surface, whereinthe pressure control surface is made of a material having higher hardness than a hard material having impact resistance and abrasion resistance.2. The pressure control valve according to claim 1 , wherein the pressure ...