КЛАПАН

Изобретение относится к ракетно-космической технике и предназначено для использования в устройствах систем жизнеобеспечения космических аппаратов. Клапан содержит корпус, запорный орган с пружиной и пневмопривод. Последний состоит из двух последовательно установленных поршней. Пружина в корпусе установлена относительно запорного органа в сторону его открытия. Поршни пневмопривода установлены так, что при подаче на них управляющего давления поджимают запорный орган в сторону его закрытия. Изобретение позволило повысить надежность работы пневмосистемы за счет обеспечения возможности открытия клапана путем сброса управляющего давления в обеих ветвях системы управляющего давления. 2 ил.

ДРОССЕЛЬ РЕГУЛИРУЕМЫЙ ПРЯМОПРОХОДНОЙ

... 1. Дроссель регулируемый прямопроходной, содержащий расположенные в корпусе дросселирующий узел, включающий седло, жестко соединенное с направляющей втулкой, имеющей пазы, запорный элемент, расположенный с возможностью перемещения относительно седла внутри направляющей втулки, и узел перемещения запорного элемента, отличающийся тем, что узел перемещения запорного элемента включает толкатель, установленный с возможностью перемещения перпендикулярно оси седла, двуплечий рычаг, установленный с возможностью поворота вокруг оси, перпендикулярной плоскости, в которой расположены оси седла и толкателя, концы рычага имеют профилированную поверхность, конец одного плеча рычага контактирует с концом толкателя, конец другого плеча рычага контактирует с запорным элементом.2. Дроссель регулируемый прямопроходной по п. 1, отличающийся тем, что площадь проходного сечения седла меньше суммарной площади проходного сечения пазов в направляющей втулке.

ОДНОСЕДЕЛЬНЫЙ ЗАПОРНЫЙ НОРМАЛЬНО ЗАКРЫТЫЙ КЛАПАН С ПРИВОДОМ ПРИНУДИТЕЛЬНОГО ОТКРЫТИЯ

Изобретение относится к арматуре для управления и обслуживания машин, аппаратов, трубопроводов и т.д., в частности к запорным устройствам технологических линий опрессовки готовых изделий на герметичность. Цель изобретения - упрощение конструкции и обслуживания, а также повышение ресурса клапана. Поставленная задача достигается тем, что односедельный запорный нормально закрытый клапан с приводом принудительного открытия, включающий сообщенный с полостью высокого давления полый корпус, в котором на проходе установлено седло с возможностью взаимодействия с затвором, управляемым исполнительным механизмом, выполнен так, что он заимствован от глубинного штангового насоса в классическом его исполнении, в котором роль затвора выполняет свободно плавающий в своей клапанной полости шарик, оснащенный приводом принудительного открытия, состоящим из установленного на корпусе с возможностью взаимодействия с шариком за счет продольного перемещения на величину рабочего хода клапана толкателя, взаимодействующего ...

КЛАПАН ОБРАТНЫЙ УПРАВЛЯЕМЫЙ

Изобретение относится к арматуростроению и предназначено для использования в металлургии в качестве обратного управляемого клапана для гидросбива окалины с заготовки на станах горячей прокатки. Клапан обратный управляемый содержит корпус 1, выполненный с многоступенчатой цилиндрической внутренней расточкой 2, с подводящим и отводящим каналами 3, 4 соответственно и затвор 5 с цилиндрическими хвостовиками 6, 7 с обеих сторон. Подводящий и отводящий каналы 3, 4 расположены относительно оси многоступенчатой цилиндрической расточки 2 со смещением друг относительно друга. Затвор 5 установлен внутри расточки 2 с возможностью контактирования с седлом 8 со стороны подводящего канала 3. Один цилиндрический хвостовик 6 затвора 5 установлен внутри гильзы 14 с седлом 8. В гильзе 14 выполнены отверстия 15 в боковых стенках, сообщающиеся с полостью отводящего канала 4. С цилиндрическим хвостовиком 6 соединен управляющий поршень 16 с буртом 17 и полостью управления 18. Соосно затвору 5 в расточке 2 расположено ...

ОБРАТНЫЙ КЛАПАН

Использование: в области арматуростроения. Сущность изобретения: обратный клапан снабжен поршнем с отверстием для штока и прохода среды. Поршень размещен в камере между впускным и выпускным каналами. Седло расположено на поршне со стороны впускного канала камеры. Длина штока превышает длину поршня. В торцах камеры выполнены упоры для запорного элемента и штока. 1 ил.

РАСПРЕДЕЛИТЕЛЬНО-ЗАПОРНОЕ УСТРОЙСТВО КОМПРЕССОРОВ И ВОЗДУХОДУВОК

Изобретение относится к пневмогидравлическим устройствам, трубопроводной арматуре и может быть использовано в горной промышленности для трубопроводного транспортирования газов, жидкостей, пневмотранспортирования сыпучих материалов. В основу изобретения поставлена задача усовершенствования распределительно-заказного устройства, в котором обеспечивается возможность использования в автоматическом режиме работы, исключается возможность возникновения самопроизвольных автоколебаний флажкового клапана под действием складывающихся потоков, предусматривается индикатор положения флажкового клапана для визуального контроля за ним, обеспечивается регулировка рабочих поверхностей седел и за счет этого повышается эффективность сложения потоков, снижаются потери и энергозатраты, обеспечивается выполнение защитных и предохранительных функций, повышается экономическая эффективность. Поставленная задача решается тем, что распределительно-запорное устройство, включающее корпус с тремя патрубками в од - ной ...

КЛАПАН УПРАВЛЯЕМЫЙ

Клапан управляемый, содержащий корпус, выполненный с многоступенчатой цилиндрической внутренней расточкой, снабженной камерой пневмопривода, подводящим и отводящим каналами, расположенными в диаметрально противоположном направлении от ее оси, поршень, подвижный запорный элемент со ступенчатой внутренней полостью, коническое седло, образующее при взаимодействии с запорным элементом проходное отверстие, соосно расположенные подпружиненный возвратной пружиной толкатель и поршень, установленные последовательно с возможностью перемещения относительно корпуса, отличающийся тем, что он снабжен сильфонами, один из которых установлен в камере пневмопривода, конец которого с одной стороны герметично закреплен в корпусе, другой - на поршне, а другой - в промежуточной полости, конец которого с одной стороны герметично закреплен в корпусе, другой - на толкателе, при этом камера пневмопривода снабжена штуцером, а подводящий и отводящий каналы расположены соосно относительно друг друга и под углом к оси ...

РЕГУЛИРУЮЩИЙ КЛАПАН

... 1. Регулирующий клапан для регулирования потока текучих сред, проходящих через него, содержащий (а) корпус, имеющий входное отверстие, выходное отверстие и канал, по которому текучая среда проходит от упомянутого входного отверстия к упомянутому выходному отверстию, (б) исполнительный механизм, размещенный в камере, соединенной с упомянутым корпусом; (в) перемещаемый столбик, выполненный с возможностью перемещения вдоль оси посредством упомянутого исполнительного механизма в диапазоне движения от крайнего отведенного положения до крайнего выдвинутого положения, (г) узел запорного клапана, связанный с упомянутым перемещаемым столбиком и выполненный с возможностью скользящего перемещения параллельно упомянутой оси относительно упомянутого перемещаемого столбика, и (д) затвор клапана, связанный с упомянутым узлом запорного клапана, так что, когда упомянутый перемещаемый столбик перемещается в упомянутое крайнее выдвинутое положение, упомянутый перемещаемый столбик принудительно переводит упомянутый ...

Обратный клапан

Гидроклапан

Изобретение относится к устройствам для управления шахтной крепью и может быть использовано для управления гидравлическими механизмами в других отраслях. Цель изобретения - расширение функциональных возможностей путем управления потоком жидкости в двух направлениях. При подаче толкателя 5 на шарик 4 он смещается вместе с подвижным седлом 3 до упора в дистанционное кольцо 8. При этом соединяются каналы 9 и 11 и жидкость проходит к потребителю. При подаче давления в канал I1 шарик 4 дополнительно поджимается к неподвижному седлу 2, каналы 10 и 11 соединяются, а жидкость направляется на слив. При подаче давления в канал 10 седло 3 поджимается к шарику 4 и гидроклапан работает как обратный. 1 ил.

Гидроблок распределителя с гидрозамками

Обратный клапан

Изобретение относится к области машиностроения и может быть использовано в химической промышленности, авиационной технике и т.п. Целью изобретения является уменьшение гидравлического сопротивления обратного клапана . Открытие дополнительного запорного органа 7 под действием перепада давлений на обратном клапане приводит к возникновению расхода через проточньш канал 9 сопла Вентури,эжек- тирующего жидкость из управляющей полости 12, и тем самым к увеличению результирующего усилия, направленного в сторону открытия основного запорного органа 6. Наличие кольцевого поршня 11 на соединенном с дополнительным запорным органом 7 корпуса 8 сопла Вентури обеспечивает увеличение результирующего усилия, действующего на дополнительный запорный орган, и более полное открытие дополнительного канала. 2 ил. п В}(о9 / / W ;2 (Л Вымд со о to ...

Обратный управляемый клапан

ОБРАТНЫЙ УПРАВЛЯЕМЫЙ КЛАПАН, в цилиндрической расточке корпуса которого установлены запорный орган в виде шарика, поджатого пружиной к седлу , образованному кольцевым выступом на ГчЭ О о о оо корпусе, и взаимодействуюш,ий с шариком толкатель, связанный с приводным элементом , установленным в корпусе на резьбе, отличающийся тем, что, с целью уменьшения габаритов, в корпусе выполнены две диаметрально противоположные прорези, приводной элемент выполнен в виде втулки с кольцевым пазом на внутренней поверхности , герметично установленной на наружной поверхности корпуса, в прорезях установлен стержень, входяший противоположными концами в паз втулки, а толкатель выполнен в виде установленного с возможностью перемешения на стержне подпружиненного конуса, основание которого больше внутреннего диаметра кольцевого выступа.

Кольцевой многоярусный клапан

Управляемый обратный клапан

УПРАВЛЯЕМЫЙ ОБРАТНЫЙ КЛАПАН, содержащий тарельчатый запорный орган и связанный с ним посредством штока поршень, разделяющие полость корпуса на надклапанную, подклапанную и разгрузочную камеры, причем надклапанная и подклапанная полости сообщены с рабочими магистралями, а разгрузочная камера - с подклапанной камерой дроссельным каналом и с надклапанной камерой дополнительным каналом , перекрываемым управляющим запорным органом, связанным с приводом , о т ли. чающийся тем, что, с целью уменьшения габаритов, . привод снабжен толкателем, воздействующим на поршень при открытии дополнительного канала управляемого обратного клапана. 10 П 6 3 ...

Аварийно-защитный вакуумный клапан

Обратный клапан

Цилиндрический затвор для напорных труб насосов

VORRICHTUNG ZUR EXTRAKTION MIT EINEM SUPERKRITISCHEN FLUIDUM

FAUCET VALVE WITH CHECK STOP

Rückschlagventil

HYDRAULISCH GESTEUERTES VENTIL MIT MINDESTENS EINEM HYDRAULISCHEN ANTRIEB

Kombiniertes Absperr- und Rueckschlagventil

Directional valve

Formed in the housing (10) of a directional valve is a stepped bore (12) which extends transversely relative to the slide bore (11) and against the shoulder (25) of which bears a diaphragm spring (23) which serves as a stop and for fixing the compression spring (20) of the valve body (19). The diaphragm spring (23) has an outer ring (30) with two lugs (37, 38) and a web (31) which bears with one end (32) firmly and with the other end (33) loosely against the ring (30). The ring (30) is split in the region of the loose end (33) of the web (31). Furthermore, the web (31) is bent out of the plane of the ring (30) in the direction of the compression spring (20) and has a widening (35) with teeth (36) for fixing the compression spring (20). The diaphragm spring (23) can be produced cheaply and can be mounted in the housing (10) quickly and simply. It can perform a plurality of functions simultaneously. ...

Fussventil fuer Pumpensaugleitung mit Entleerungsvorrichtung

Gas e.g. fuel gas, injection valve for motor vehicle, has elastic protective device provided with opening formed as slot and arranged in flow direction of gaseous medium toward passages

The valve (1) has a valve seat unit (2) with passages (3) and an actuating unit (4) that releases and closes the passages. An elastic protective device (8) is provided with an opening formed as a slot (9), and arranged in a flow direction of a gaseous medium toward the passages. The protective device includes concave partial areas (8a, 8b), where the slot is formed at a contact area between the partial areas and is formed as a cover with a flange (8c) for fastening the protective device. The slot is closed based on proper resilience of the partial areas.

LUFTFEDERSYSTEM

Check valve has return valve pitch, which has seat pin movable opposite to valve seat, and operating pitch, which has hydraulically adjustable auxiliary piston

The check valve has a return valve pitch (5), which has a seat pin (14) movable opposite a valve seat (12), and an operating pitch (3), which has a hydraulically adjustable auxiliary piston (16). The hydraulically adjustable auxiliary piston brings seat pin into a given position. A manual control unit (22) is provided, by which the auxiliary piston is adjustable.

Non-return valve for hydraulic coal mining equipment comprises casing with several connections connected by central bore containing spring-loaded valve piston and control piston connected by control slide

The non-return valve for use in hydraulic coal mining equipment comprises a casing (2) with several connections (3 - 6) connected by a central bore (7). This contains a spring-loaded valve piston (8) and a control piston (10). The pistons are connected by a separate control slide (11) which can move axially in a bore in the control piston and fits against the valve piston.

ADJUSTABLE VALVE ASSEMBLY

... 1392944 Valves SOS CONSOLIDATED Inc 21 Aug 1972 38911/72 Heading F2V A valve comprises a valve member 42 spring urged to the closed position to act as a check valve, the valve member having a stem 46 the end 47 of which may engage an adjustable stop 60 so that the valve may act as a throttle valve (as shown), the adjustable stop being movable on to the valve stem when the valve is in the closed position to lock the valve closed so that the valve may also be used as a shut-off valve. The valve member is guided by two fixed guides, one 38 formed on a valve seat 32 and the other 54 on fingers 52. An indicator 76 gives an indication of the position of the stop 60.

VALVE ASSEMBLY FOR PIPELINE

AN OVERRIDE CHECK VALVE

Equalizing flapper for high slam rate applications

A flapper valve assembly is described having an equalizing port assembly (32) with a bleed valve member (64) that is moveable between an open position and a closed position. The equalizing port assembly features a structural support member in the form of a retainer key (80) that is secured to the flapper valve member both axially and radially. Additionally, a compressible spring (86) is located between the structural support member and provides biasing force upon the valve member to urge it toward a closed position. Additionally, the flapper valve member presents a pair of raised, substantially flat actuator contact portions (54) upon its downstream face to meet an actuating tube (34) in a mating contact arrangement and resist material deformation that could tend to clog or block the equalizing fluid flow port.

Solenoid valve and air pressure massage device

A solenoid valve with a small-size light-weight check valve. In the solenoid valve, a voltage is applied to a solenoid (14) to move a plunger (16) toward an end wall (22) of a housing of the solenoid valve. This presses an annular valve seat engagement section (64) of a valve body (48), which is attached to the plunger, against a valve seat around a fluid exit (26) formed in the end wall (22). As a result, the fluid exit (26) is closed with the annular valve seat engagement section deformed, and at the same time, a valve pressing member (46) attached to the plunger is separated from a valve body (52) provided at a fluid entrance (24) in an end wall (20) in the housing. This causes the valve body (52), formed at the fluid opening (24) of the housing, to function as a check valve to allow inflow of pressurized air from a pump. When the voltage is not applied to the solenoid (14), the plunger (16) is urged toward the fluid entrance by a compression spring (60). This makes the valve pressing ...

Back flow preventer

A reverse flow prevention apparatus 1 comprises a housing 2 with two check valves 5, 6 in series, an inner body 3 displaceably mounted upstream of check valve 6 which provides the housing for check valve 5 and cooperates with housing 2 to form the valve member of an escape valve 4 whose outlet is a drain 10 positioned between the check valves wherein a spring 19 urges escape valve 4 into an open position and a diaphragm 17 connects inner body 3 to housing 2. The inner body can be cylindrical. The effective diameters of diaphragm 17 and escape valve seat 14 are equal and the tension of springs 19, 30 are set so that the pressure between check valves 5, 6 is lower than upstream of valve 5. Inner body 3 may slide against housing 3 in an area 15 provided with equally spaced, circumferential, recessed grooves 16 and may be coated with a non-stick coating. Valve members 36 may be substantially mushroom shaped. Inner body 3 may have a tapered end 39. External linkings 11, 11a, 11b, opened by ball ...

A beer dispensing tap

A tap 10 characterised in that it includes an outlet 21, a non-return valve 40 within a liquid flow passage intermediate a valve member 23 and an inlet 11, and also a variable volume auxiliary reservoir 50. Preferably the non-return valve is a captive valve disc (41, Fig 3) comprising a biasing element configured to bias the non-return valve in an open configuration. Also defined is a tap where a handle 31 is adapted to rotate about a first axis, comprising a domed base 32, the curvature being centred off the first axis.

RADIATOR VALVES MACHINES FOR MAKING HOT BEVERAGE

... 1359142 Central heating systems BRITISH GAS CORP 15 July 1971 [16 April 1970] 18321/70 Heading F4U [Also in Division F2] A radiator valve, which is designed to be incorporated in both the supply and the return lines of a radiator and which permits removal of the radiation without prior draining of the latter, comprises first and second housing parts 18 and 25 which are releasably securable together by a nut 24 and which contain, respectively, first and second valve members 22 and 30. The first housing part 18 is anchored to a face-plate 11 behind which there is disposed the supply or return pipe 19, the valve member 22 contained in this housing part being biased on to a seat 23 formed on the housing part to close off the supply or return flow. The second housing part 25 includes a supply or return connection 26 leading to the radiator, the valve member 30 contained in this part being coupled to an externally accessible operating shaft 37 and being movable by such shaft relative to a valve ...

IMPROVEMENT IN SUBSEA VALVES

BARRIER VALVE

A barrier valve comprises a valve body 22 having an inlet 23, an outlet 24 and a fluid passageway extending therebetween, valve means located within the valve body for controlling fluid flow along the passageway, the valve means including cone elements 42 movable between an open position and a closed position whereat the cone elements engage one another to collectively form a cone extending across the passageway and pointing axially upstream of the flow of fluid in order to stop flow of fluid along the passageway, actuation means 50 located within the valve body and movable between a retention position whereat the actuation means maintains the cone elements at their valve open position and a release position whereat the actuation means permits formation of said cone. The actuation means comprises a piston-operated sleeve 51 which, on release of pressure from a control chamber, is withdrawn from between the cone elements. The assembly may include a rotary shut-off valve 80. ...

Globe valve

A globe valve has a plug (8) which is moveable into engagement with a seat (9) with a suitable operating mechanism. The plug (8) is guided for movement within a branch (6) of the valve body by means of guide rods (10). The guide rods are formed separately from the valve body and are secured in position by the combination of a protrusion (18) engaging a pocket (19) at one end of each rod and a fillet weld (13) at the opposite end of each rod. The rods are preferably coated with a wear resistant material. ...

Improvements in or relating to diaphragm valves

... 1,036,970. Valves. BURGOMASTER OF HAGUE MUNICIPALITY. June 30, 1964 [July 8, 1963], No. 26922/64. Heading F2V. With the valve in the open position shown, the threaded part of the stem 10 is fully screwed into a sleeve 12 whereby the latter is lifted together with a rubber diaphragm that forms a chamber 24 in which is a plastic diaphragm 5 embodying one or more downstream apertures 23. Pressure water in the inlet 19 lifts the diaphragm 5 away from the weir 21 so that the water flows to the outlet 20. Any reversal of flow causes the diaphragm 5 to reseat. Upon rotating the stem 10 the rubber diaphragm 4 abuts and forces the plastic diaphragm 5 on to the weir 21to close the valve.

Improvements in or relating to taps or valves

... 248,413. Bliss, J. June 6, 1925. Valves fitted with independently-actuated supplementary valves.-In a tap for drawing off viscous liquids from a container wherein the body portion of the tap is provided with a non- return valve situated beyond the tap member and so constructed that connection may be made with means for forcing in pressure fluid such as air, the tap member consists of a cylindrical plug 13 movable axially along the outlet throughway. The tap is formed with a lateral enlargement 11 containing a non-return ball valve 18 and in which is screwed a nipple 20 leaving a screw thread 17 to take a pump connection The nipple may have a cup-shaped mouth to take a spherically formed end of a pump. A tapered screwed end 10 of the tap is inserted in the container.

A SCREW DOWN NON RETURN VALVE

SWING CHECK VALVE

... 1442980 Valves GROVE VALVE & REGULATOR CO 3 July 1974 [27 July 1973] 29506/74 Heading F2V In a swing check-valve generally as disclosed in Specification 1,441,857 a dished spherical closure member 30 has a frusto-conical closure surface 34 coacting with a like surface on a seat-ring 28. A resilient seal ring 38 is provided in the seat-ring. The closure member has a chordal plate 40 welded to it and the closure surface may be formed on a radius of the sphere. The shaft 44 to which the closure member is attached is connected to a drive shaft (76), Figs. 3, 4 (not shown), via a lost motion connection and a valve operator (86) is capable of rotating the shaft (76) through approximately 90 degrees. The valve may thus be inactivated in a fully opened condition. Indicators are provided to show the position of the shaft (76) and the closure member.

Automatic valve

Manifold for a sprinkler system

A manifold 1 for arrangement in the main supply tubing of a sprinkler system comprises a main tube body 10 with an inlet port 11 at a first end 12 and an outlet port 13 at a second end 14. A main tube valve 15 is provided to open and close a main passage extending along a main axis 16 in the main tube body 10, by turning the valve 15 in a valve axis (17, Fig. 2b). The main tube body 10 has a test outlet port 23 with a test outlet port axis 33 and a pressure measuring port 25 with a pressure measuring port axis 34. The main tube body 10 is manufactured by a moulding process which leaves to a moulding seam 35 on the main tube body 10. The moulding seam 35 defines a moulding plane. The test outlet port axis 33 and the pressure measuring port axis 34 extend parallel to one another and lie in the moulding plane.

Dry-break fuel receiver with integral back-flow prevention

Dry-break fuel receiver with integral back-flow prevention

Dry-break fuel receiver with integral back-flow prevention

Dry-break fuel receiver with integral back-flow prevention

AUS METALL BESTEHENDE DICHTVORRICHTUNG AN EINEM HOCHVAKUUMVERSCHLUSS

PORTABLE HAND-OPERATED DEVICE FOR APPLYING PNEUMATIC PRINTING IMPULSES ON AN EAR CHANNEL

STOP VALVE WITH A HOLLOW VERSCHLUSSORGAN

VALVE FOR AN INFLATABLE BODY

CONTROL VALVE

FLAT VALVE DEVICE

SEALS POSITIONING ARRANGEMENT

ACTUATOR

VENTIL

AUS METALL BESTEHENDE DICHTVORRICHTUNG AN EINEM HOCHVAKUUMVERSCHLUSS

VENTIL

PROCEDURE, DEVICES AND/OR SYSTEMS REGARDING FUEL DELIVERY SYSTEMS FOR INDUSTRIAL MACHINES

Kompakter hydraulischer Ventilmechanismus für eine längenverstellbare Pleuelstange

Die vorliegende Erfindung betrifft einen hydraulischen Ventilmechanismus (1; 1‘) zum Öffnen und Schließen einer zu einer Druckkammer führenden Hydraulikleitung, insbesondere einer zu einer Hochdruckkammer (31, 32) einer längenverstellbaren Pleuelstange führenden Hydraulikleitung (35, 36), mit einem Zulaufventil (2, 2‘) und einem Ablassventil (3, 3‘). Es ist die Aufgabe der vorliegenden Erfindung, einen hydraulischen Ventilmechanismus bereitzustellen, der die Stabilität der aus dem Stand der Technik bekannten längenverstellbaren Pleuelstangen erhöht. Hierzu ist erfindungsgemäß vorgesehen, dass das Zulaufventil (2, 2‘) und das Ablassventil (3, 3‘) in einer gemeinsamen Gehäuseeinheit (4) angeordnet sind und die Gehäuseeinheit (4) in die Hydraulikleitung (35, 36) einsetzbar ausgestaltet ist.

VALVE

VALVE WITH SEALED BELLOWS AND PACKING BOX FOR POISONOUS FLUIDS TRANSPORTING CONTAINERS

LIFTING PISTON PUMP AND CHECK VALVE

ABSPERRARMATUR

SHAVING DEVICE WITH SWIVELINGOPERATED VALVE TO THE SUPPLY OF SHAVING AID MATERIAL

RÜCKSCHLAGVENTIL

STOP VALVE

CHECK VALVE.

CHECK VALVE DEVICE.

RÜCKSCHLAGVENTIL

VALVE FOR A VACUUM PIPING.

CHECK VALVE

HYDRAULIC LOWERINGBRAKE - NON-RETURN VALVE

HIGH PRESSURE VALVE

TILTABLE FINAL FLAP FUR OF PRESSURE PIPES OF PUMPS WITH HIGH DEMAND QUANTITY

TWO-WAY INSTALLATION VALVE

CHECK VALVE FOR MEDICAL INFUSION LINES AND SUCH A THING

Diaphragm valve

Valve

PORTABLE HAND-OPERATED DEVICE FOR APPLYING PNEUMATIC PRINTING IMPULSES ON AN EAR CHANNEL

PORTABLE HAND-OPERATED DEVICE FOR APPLYING PNEUMATIC PRINTING IMPULSES ON AN EAR CHANNEL

PORTABLE HAND-OPERATED DEVICE FOR APPLYING PNEUMATIC PRINTING IMPULSES ON AN EAR CHANNEL

PORTABLE HAND-OPERATED DEVICE FOR APPLYING PNEUMATIC PRINTING IMPULSES ON AN EAR CHANNEL

PORTABLE HAND-OPERATED DEVICE FOR APPLYING PNEUMATIC PRINTING IMPULSES ON AN EAR CHANNEL

PORTABLE HAND-OPERATED DEVICE FOR APPLYING PNEUMATIC PRINTING IMPULSES ON AN EAR CHANNEL

PORTABLE HAND-OPERATED DEVICE FOR APPLYING PNEUMATIC PRINTING IMPULSES ON AN EAR CHANNEL

PORTABLE HAND-OPERATED DEVICE FOR APPLYING PNEUMATIC PRINTING IMPULSES ON AN EAR CHANNEL

PORTABLE HAND-OPERATED DEVICE FOR APPLYING PNEUMATIC PRINTING IMPULSES ON AN EAR CHANNEL

PORTABLE HAND-OPERATED DEVICE FOR APPLYING PNEUMATIC PRINTING IMPULSES ON AN EAR CHANNEL

PORTABLE HAND-OPERATED DEVICE FOR APPLYING PNEUMATIC PRINTING IMPULSES ON AN EAR CHANNEL

Storing and dispensing liquids

FLUSHING VALVE

CHECK VALVE ASSEMBLY

Disclosed herein is a check valve assembly comprising a fluid inlet comprising one of an integral coupling for a water meter and a coupling for another component, a fluid outlet comprising the other of the integral coupling for a water meter and the coupling for another component, and a body configured to receive one or more check valves therein, the body defining a fluid pathway from the fluid inlet to the fluid outlet through the one or more check valves. 10 Figure 1 16B 16A 20 18 16Figure 2 2412 ...

EXHAUST BRAKE

SUBSEA SHUTDOWN VALVE WITH MAINTENANCE ISOLATION BYPASS

Valves

Lubricating grease return valve

An apparatus for the relief of grease under pressure in the delivery line of grease guns and similar pressure delivery devices includes a 3-port valve in which the relief port is located between the delivery and inlet ports and includes a one way flow control valve mounted therein. The one way flow control valve is maintained in a closed position by the pressure of the grease and is activated to be opened to reduce the pressure in the valve body and allow the grease to return to the grease reservoir.

Implantable adjustable valve

A valve unit capable of being implanted in a patient and having adjustable performance settings, such as pressure settings and/or flow control, to regulate passage of a bodily fluid. A casing defines a port for the bodily fluid, and a valve mechanism positioned at the port includes a movable valve member. The valve unit further includes a rotor disposed at a first location in the casing and having an axle which turns about an axis of rotation. The rotor defines a plurality of arcuate, radially flat cam surfaces. Each cam surface occupies an arc about the axis of rotation. A spring arm unit is disposed at a second location in the casing having a cam follower arm in slidable contact with the cam surfaces of the rotor and having a resilient spring element applying a closing effect with the movable valve member to establish a performance setting for the valve unit. Sufficient rotation of the rotor to change the cam surface in contact with the cam follower alters the closing effect with which the valve member moves relative to the port and thereby alters the performance setting of the valve unit.

FORWARD CHECK VALVE AND FUEL CELL SYSTEM

A forward check valve and a fuel cell system in which fluid control is performed with increased reliability when a highly active fluid is used are structured such that when an edge portion of a cap is joined to an edge portion of a valve housing, a peripheral edge portion of a diaphragm is pushed and sandwiched by a peripheral edge portion of the cap and a placement portion. Further, the diaphragm is formed of rubber. As a result, the peripheral edge portion of the diaphragm is compressed by the peripheral edge portion of the cap and the placement portion, so that the degree of contact at a contact portion between the placement portion and the peripheral edge portion of the diaphragm becomes very high. Consequently, in the forward check valve, joints of the members including a joint of the edge portion of the cap and the edge portion of the valve housing do not contact methanol. 1. A forward check valve comprising:a valve housing;a diaphragm including a peripheral edge portion located on the valve housing;a valve body; anda cap; whereinthe diaphragm and the valve housing are arranged to define a valve chamber;a central portion of the diaphragm that is provided at an inner side of a peripheral edge portion is arranged to be displaced by pressure of a fluid in the valve chamber;the valve housing includes an inflow hole through which the fluid flows into the valve chamber, an outflow hole connected to a pump and through which the fluid flows out from the valve chamber by suction pressure of the fluid generated by the pump, and a placement portion on which the peripheral edge portion of the diaphragm is located;the valve body is disposed at the inflow hole and arranged to block or allow a flow of the fluid into the valve chamber from the inflow hole by displacement of the diaphragm;the cap is joined to the valve housing and arranged to push the peripheral edge portion of the diaphragm; andthe peripheral edge portion is sandwiched by the cap and the placement portion.2. ...

VARIABLE FLOW CHECK VALVE FOR HYDRAULIC TENSIONER

A variable flow check valve () and method of manufacture thereof can include a housing () defining an inlet passage () communicating with a plurality of valve seats () and a ball-guiding passage () adjacent each valve seat (). A plurality of balls () is provided; one ball () for each valve seat (). Each ball () engages within a ball-guiding passage () for reciprocal movement with respect to a corresponding valve seat () and is normally biased toward the corresponding valve seat (). At least two of the plurality of balls () have at least one different fluid flow characteristic selected from a group including a size of each ball, an allowable ball travel distance for each ball, and an amount of biasing force applied to each ball. The check valve () can be combined with a hydraulic tensioner () for an endless, flexible, power transmission member () for an internal combustion engine of a motor vehicle. 130. A variable flow check valve () comprising:{'b': 36', '38', '32', '40', '32, 'a housing () defining an inlet passage () communicating with a plurality of valve seats (), and a ball-guiding passage () adjacent each valve seat (); and'}{'b': 42', '32', '42', '32', '42', '40', '36', '32', '32', '42, 'a plurality of balls () corresponding in number to the plurality of valve seats (), one ball () for each valve seat (), each ball () received within the ball-guiding passage () of the housing () for reciprocal movement with respect to the corresponding valve seat () and normally biased toward the corresponding valve seat (), at least two of the plurality of balls () having at least one different fluid flow characteristic selected from a group including a different ball size, a different allowable ball travel distance, and a different ball biasing force.'}230. The variable flow check valve () of further comprising:{'b': 34', '32, 'at least one preform () defining the plurality of valve seats () and formed of a stamped sheet metal material.'}330. The variable flow check valve ...

MULTI-OPERATIONAL VALVE

A valve for selectively fluidly communicating a first fluid volume and a second fluid volume includes a valve body, an inlet orifice in fluid communication with the first fluid volume, and an outlet aperture in fluid communication with the second fluid volume. The valve also includes an activation member axially movable relative to the valve body. The valve is operable in a first mode in which the valve opens in response to manual actuation of the activation member. The valve is operable in a second mode in which the valve opens when a pressure difference between the first and second fluid volumes reaches a predetermined value, and the valve closes when the pressure difference between the first and second fluid volumes is less than the predetermined value. 1. A valve for selectively fluidly communicating a first fluid volume and a second fluid volume , the valve comprising:a valve body;an inlet orifice in fluid communication with the first fluid volume;an outlet aperture in fluid communication with the second fluid volume; andan activation member axially movable relative to the valve body;wherein the valve is operable in a first mode in which the valve opens in response to manual actuation of the activation member, andwherein the valve is operable in a second mode in which the valve opens when a pressure difference between the first and second fluid volumes reaches a predetermined value, and the valve closes when the pressure difference between the first and second fluid volumes is less than the predetermined value.2. The valve of claim 1 , wherein the valve further comprises a first plunger axially movable within the body and a second plunger axially movable relative to the first plunger.3. The valve of claim 2 , wherein a distal portion of the second plunger forms a seal with the inlet orifice when the valve is closed claim 2 , and wherein the distal portion is spaced from the inlet orifice when the valve is open.4. The valve of claim 3 , wherein the first plunger ...

Electro-mechanical pressure relief valve

Examples of a pressure relief valve are provided. An example pressure relief valve comprises a main seal ring, a poppet configured to form a seal with the main seal ring, a dynamic wear sleeve configured to cover the main seal ring when the pressure relief valve is at least partially open and comprising a reduced cross-sectional area of the inner diameter at one end of the dynamic wear sleeve, an electro-mechanical clutch assembly, and wherein the pressure relief valve is actuated by the electro-mechanical clutch assembly.

Double-Acting Shift Cylinder Actuating Assembly

An assembly for actuating a double-acting shift cylinder of a shift assembly of an automatic transmission of a motor vehicle includes a hydraulic fluid reservoir having a motor-driven hydraulic pump and two control valves that are each connected to a pressure supply line of the hydraulic pump and to a return line to the hydraulic fluid reservoir. The shift cylinder has two pressure chambers that are each connected to one of the control valves. The control valves each connect one pressure chamber of the shift cylinder to the pressure supply line of the hydraulic pump or to the return line to the hydraulic fluid reservoir. The actuating assembly includes at least one pressure-limiting valve that connects the pressure supply line to the return line if a hydraulic over-pressure is present. The control valves can be 3/2-directional valves having integrated pressure-limiting valves. 1. An actuating assembly for a double-acting shift cylinder of a shift assembly of an automatic transmission of a motor vehicle , the actuating assembly comprising: a hydraulic fluid reservoir; a hydraulic pump; two 3/2-directional control valves , each of the control valves having an integrate pressure-limiting valve , each of the control valves being connected to a pressure supply line of the hydraulic pump and to a return line to the hydraulic fluid reservoir , the control valves being connected to associated working chambers of a shift cylinder , the control valves being configured to connect the associated working chambers of the shift cylinder to one of the pressure supply line of the hydraulic pump and the return line to the hydraulic fluid reservoir; and at least one pressure-limiting valve configured to connect the pressure supply line to the return line in the presence of a hydraulic overpressure.2. The actuating assembly as claimed in claim 1 , wherein each of the 3/2-directional control valves includes a middle position between a closed position for the pressure supply line and an ...

Check Valve for a Solenoid Valve and Associated Solenoid Valve

A check valve for a solenoid valve inclues a check valve seat that is arranged on an edge of a fluid passage and a movable closing element configured to execute a direction-oriented throughflow and sealing function. The closing element includes a sealing cone, a contact foot with a plurality of outflow grooves formed on the edge, and an elastic sealing ring that is arranged between the contact foot and the sealing cone. The outflow grooves form in each case a seating edge for the elastic sealing ring during sealing. The outflow grooves are configured in each case with an arcuate seating edge, which has a predetermined arc length, so that a circle segment of the elastic sealing ring, with an opening angle in the region of 40° to 120°, butts against the respective seating edge during sealing. A solenoid valve includes the check valve.

Non-Return Valve for a Solenoid Valve and Associated Solenoid Valve

A non-return valve for a solenoid valve includes a non-return valve seat and a movable closure element. The valve seat is arranged at an edge of a fluid channel. The movable closure element is configured to carry out a direction-orientated throughflow and sealing function. The closure element includes a sealing cone, an abutment base, and a resilient sealing ring. The sealing ring is arranged between the abutment base and the sealing cone. The abutment base forms, in the event of sealing, a support face for the resilient sealing ring. At an edge of the non-return valve seat there is a first support face which in the event of sealing forms with a second support face which is formed at the outer edge of the abutment base in the direction of the non-return valve seat a mechanical axial stop for the movable closure element. 1. A non-return valve for a solenoid valve , the non-return valve comprising:a non-return valve seat arranged at an edge of a fluid channel; anda movable closure element configured to carry out a direction-orientated throughflow and sealing function, the movable closure element including a sealing cone, an abutment base, and a resilient sealing ring, the resilient sealing ring arranged between the abutment base and the sealing cone, wherein:the abutment base forms, in the event of sealing, a support face for the resilient sealing ring,a first support face is formed at an edge of the non-return valve seat,a second support face is formed at an outer edge of the abutment base in the direction of the non-return valve seat, andin the event of sealing, the first support face forms with the second support face a mechanical axial stop for the movable closure element.2. The non-return valve according to claim 1 , wherein the abutment base has a circular base face.3. The non-return valve according to claim 1 , wherein:a groove is formed between the abutment base and the sealing cone, andthe groove partially receives the resilient sealing ring.4. The non-return ...

COMPONENT ATTACHING STRUCTURE AND PRESSURE REGULATOR

A component attaching structure for attaching a first component and a second component to each other. The first component has an attachment hole and an internal thread formed therein. The second component has an external thread formed thereon. The second component supports a sealing member, which seals an interface between an outer circumferential surface of the second component and an inner circumferential surface of the attaching hole at a position closer to a tip end of the second component than the external thread. If the direction in which the second component moves relative to the first component when the second component is attached to the first component is defined as an attaching direction, a distance between the external thread and the sealing member in the attaching direction is greater than the length of the internal thread in the attaching direction. 1. A component attaching structure for attaching a first component and a second component to each other , whereinthe first component has an attachment hole and an internal thread formed in an inner circumferential surface of the attaching hole,the second component has an external thread formed on an outer circumferential surface thereof,the component attaching structure is configured such that the second component can be attached to the first component by screwing the external thread of the second component into the internal thread of the first component,the second component supports a sealing member, which seals an interface between the outer circumferential surface of the second component and the inner circumferential surface of the attaching hole at a position closer to a tip end of the second component than the external thread, andif the direction in which the second component moves relative to the first component when the second component is attached to the first component is defined as an attaching direction, a distance between the external thread and the sealing member in the attaching direction is ...

PRESSURE RELIVE VALVE ASSEMBLY

A gas pressure relief valve assembly with a normally closed check valve received in a main body. An actuator pin slidably received in a guide body threadably carried by the main body may be advanced to open the check valve and retracted to permit the check valve to close. A knob connected to the actuator pin and threadably carried by the guide body may be manually rotated in opposite directions to advance and retract the actuator pin. Rotary loosening of the threaded knob and/or loosening of the threaded guide body will retract the actuator pin and prevent opening of the check valve. 1. A pressure relief valve assembly comprising:a body with at least one flow passage in the body providing at least part of an opening to the exterior of the body;a normally closed check valve in the at least one flow passage in the body which when closed prevents the flow of compressed gas through the at least one passage and to the exterior of the body and when opened permits flow of gas through the at least one passage and to the exterior of the body;an actuator pin slidably carried by the body and movable relative to the body to an advanced position opening the normally closed check valve and to a retracted position permitting the check valve to close; anda knob connected to the actuator pin and having threads engaged with complementary threads carried by the body and rotatable in one of a clockwise or counterclockwise direction to advance the actuator pin relative to the body to open the check valve and rotatable in the other of the clockwise or counterclockwise direction to retract the actuator pin relative to the body to permit the check valve to close.2. The assembly of wherein the body comprises a main body and a guide body carried by the main body claim 1 , the at least one passage includes an axial bore through the main body in which the check valve is received and the guide body includes a through bore in which the actuator pin is received at least in part for generally ...

RELIEVABLE CHECK VALVE FOR MEDICAL LINES

This invention concerns relievable normally closed check valves for use in conjunction with fluid delivery systems for medical patients, as well as methods for making and using valves. In the medical context, such valves function at very low fluid pressures, and include a multi-part valve body made from upper and lower housings capable of movement relative to each other that, when operably connected, dispose between them a compliant or deformable, resilient valve element normally biased in the closed position against a valve seat present on the inner surface of the upper housing. The upper housing also includes a lower housing seat. The inside surface of the lower housing contains or supports a structure that positions the valve element to engage the valve seat in the absence of fluid pressure above the valve's pre-determined cracking pressure. The valve's flow prevention function may be relieved in the absence of sufficiently pressurized fluid by causing the valve element to disengage from the valve seat, for example, by adjusting the valve body to distance the valve element from the valve seat. 1. A relievable one-way check valve , comprising:(a) a valve housing having a valve seat;(b) a valve element within the valve housing that is biased against the valve seat in a normally closed position but that opens when exposed to a pressure differential that meets or exceeds a rated cracking pressure for the valve; and(c) a valve relief feature that, when actuated a user, opens the valve to fluid flow at a pressure that is less than a rated cracking pressure for the valve.2. A valve according to claim 1 , wherein the valve relief feature claim 1 , when actuated claim 1 , causes change in a physical relationship between the valve seat and valve element claim 1 , resulting in fluid flow through the valve even if the pressure differential across the valve element is less than the rated cracking pressure for the valve.3. A valve according to claim 1 , wherein the valve ...

FLUID CONTROL VALVE DEVICE

A first hole is connected through a first fluid chamber to an inflow hole. A first valve seat is formed around the first hole. A second fluid chamber is connected through a second hole to the first hole. An outflow hole is connected to the second fluid chamber. A second valve seat is formed around the second hole. A third valve seat is formed around the outflow hole. A first valve element is movable in the first fluid chamber to make contact with the first valve seat. A second valve element is movable in the second fluid chamber to make contact with the second valve seat or the third valve seat. A biasing member biases the second valve element toward the second valve seat. An outer peripheral passage is formed between an outer periphery of the second valve element and the second housing to enable flow therethrough. 1. A fluid control valve device comprising:a first housing having an inflow hole configured to enable inflow of fluid, a first fluid chamber connected to the inflow hole, a first hole connected to the first fluid chamber, and a first valve seat portion formed around an outer periphery of the first hole;a second housing having a second hole connected to the first hole, a second fluid chamber connected to the second hole, an outflow hole connected to the second fluid chamber and configured to enable outflow of fluid, a second valve seat portion formed around an outer periphery of the second hole, and a third valve seat portion formed around an outer periphery of the outflow hole;a first valve element axially movable in the first fluid chamber and configured to make contact with the first valve seat portion at an outer periphery;an actuator configured to move the first valve element;a second valve element axially movable in the second fluid chamber between the second valve seat portion and the third valve seat portion, the second valve element configured to make contact with the second valve seat portion or the third valve seat portion at an outer periphery; ...

ELECTROMAGNETIC VALVE AND INTERNAL COMBUSTION ENGINE COOLING SYSTEM WITH ELECTROMAGNETIC VALVE

A solenoid valve (), in particular for closing a bypass in a coolant circuit of an internal combustion engine, with an energizable winding () and an armature () that is adjustable in the direction of a core by energizing the winding, which armature () force-loads a valve plunger () with energized winding () in the direction of a closing position, in particular against the spring force of a resetting spring (), wherein when the armature () is energized a pin () which is adjustable together with the armature for adjusting the valve plunger () in the direction of the closing position is provided, by way of which the valve plunger () by way of adjusting the armature () upon energization can be force-loaded in the direction of the closing position, and which is spring force-loaded by a pressure limiting spring () in the direction of the closing position of the valve plunger () and which by way of the valve plunger () upon an axial valve plunger movement of the valve plunger () out of its closing position is adjustable for opening the solenoid valve () despite the armature () that is adjustable in the direction of the core () against the spring force of the pressure limiting spring (). 113228318. A solenoid valve () , in particular for closing a bypass in a coolant circuit of an internal combustion engine , with an energizable winding () and an armature () that is adjustable in the direction of a core by energizing the winding , which armature () force-loads a valve plunger () with energized winding () in the direction of a closing position , in particular against the spring force of a resetting spring () , wherein{'b': 2', '12', '8', '8', '2', '13', '8', '8', '8', '1', '2', '6', '13, 'when the armature () is energized a pin () which is adjustable together with the armature for adjusting the valve plunger () in the direction of the closing position is provided, by way of which the valve plunger () by way of adjusting the armature () upon energization can be force-loaded ...

METHOD AND SYSTEM FOR PRE-PROGRAMMED SELF-POWER MICROFLUIDIC CIRCUITS

A major challenge for the general use of “lab-on-a-chip” (LOAC) systems and point-of-care (POC) devices has been the generally complex and need for sophisticated peripheral equipment, such that it is more difficult than anticipated to implement low cost, robust and portable LOAC/POC solutions. It would be beneficial for chemical, medical, healthcare, and environmental applications to provide designs for inexpensive LOAC/POC solutions compatible with miniaturization and mass production, and are potentially portable, using compact possibly hand-held instruments, using reusable or disposable detectors. Embodiments of the invention address improved circuit elements for self-powered self-regulating microfluidic circuits including programmable retention valves, programmable trigger valves, enhanced capillary pumps, and flow resonators. Additionally embodiments of the invention allow for the flow direction within a microfluidic circuit to be reversed as well as for retention of reagents prior to sale or deployment of the microfluidic circuit for eased user use. 1. A device comprising:a first microfluidic channel having a first predetermined width, a first predetermined depth and at least a sidewall;a second microfluidic channel having a second predetermined width and a second predetermined depth, the second microfluidic channel disposed with a first end at a first predetermined offset from the first microfluidic channel and having an axis orientated at a first predetermined angle relative to the sidewall of the first microfluidic channel;a third microfluidic channel having a third predetermined width less than that of the second predetermined width and a third predetermined depth less than that of the second predetermined depth, the third microfluidic device disposed between the first end of the second microfluidic channel and the sidewall of the first microfluidic channel and having an axis orientated at a second predetermined angle relative to an axis of the first ...

PNEUMATIC VALVE

A pneumatic valve, includes an air chamber, a connector for supplying compressed air to the air chamber and one or more connectors for discharging compressed air from the air chamber. The valve includes an actuator with a mobile closure element which, when the actuator is activated, blocks the supply of compressed air via the supply connector, and when the actuator is deactivated, is arranged to permit the supply of compressed air via the supply connector. The actuator is configured such that the closure element, on deactivation of the actuator, is moved by a restoring force into the free position. A check valve with a spring is arranged at the supply connector. The elastic force of the spring in the free position of the closure element prevents back-flow of compressed air from the air chamber into the supply connector when there is no supply of compressed air at the supply connector. 1. A pneumatic valve , comprising:an air chamber having a supply connector for supplying compressed air to the air chamber;one or more discharge connectors for discharging compressed air from the air chamber;there being provided in the valve an actuator with a mobile closure element which, i) when the actuator is activated, is arranged in a blocking position in which the supply of compressed air via the supply connector is blocked, and ii) when the actuator is deactivated, is arranged in a free position in which the supply of compressed air via the supply connector is permitted; anda check valve with an elastic means arranged at the supply connector;wherein the actuator is configured such that the closure element, on deactivation of the actuator, is moved by a restoring force into the free position,a check valve with an elastic means, wherein the elastic force of the elastic means in the free position of the closure element prevents back-flow of compressed air from the air chamber into the supply connector when there is no supply of compressed air at the supply connector, andwherein ...

FIVE-PORT SWITCHING VALVE WITH RESIDUAL PRESSURE EXHAUST VALVE

A switching valve includes main valve constituted of a five-port electromagnetic switching valve settable to a closed-center position, and a residual pressure exhaust valve including an exhaust valve cavity communicating with a supply port of the main valve and two exhaust ports, two residual pressure discharge flow paths respectively communicating with the exhaust ports, two exhaust valve elements placed inside the exhaust valve cavity and driven by pressure air from the supply port to open and close the residual pressure discharge flow paths, and a release spring that biases the exhaust valve element in a direction to open the residual pressure discharge flow paths. While the pressure air is not supplied into the exhaust valve cavity through the supply port, the exhaust valve element opens the residual pressure discharge flow paths so as to discharge residual pressure from the exhaust port, and when pressure air is supplied into the exhaust valve cavity the exhaust valve element closes the residual pressure discharge flow path, and hence the residual pressure is not discharged from the exhaust port. 1. A five-port switching valve with residual pressure exhaust valve , comprising:a main valve constituted of a five-port electromagnetic switching valve settable to a closed-center position; and a residual pressure exhaust valve attached to the main valve,wherein the residual pressure exhaust valve includes, in an exhaust valve cavity formed in an exhaust valve body, two residual pressure discharge flow paths respectively communicating with two output ports of the main valve so as to open the output ports to ambient air; two exhaust valve elements configured to contact and move away from a residual pressure exhaust valve seat of the respective residual pressure discharge flow paths to open and close the respective residual pressure discharge flow paths; a release spring that biases each of the exhaust valve elements in a direction away from the residual pressure ...

Adjustable Check Valve

A check valve has an internal gate having an adjustable retention force, such that in the event that if the differential pressure between the upstream and downstream pressure changes, the force required to allow flow through the valve may be adjusted without removal of the valve from the piping system.

Method and Apparatus for Valve Adjustment

Disclosed is a valve assembly operable to selectively control a flow or passage of a fluid. The valve assembly may be applied to any appropriate mechanism such as a hydrocephalus shunt, fluid draining sewage system, or tank holding system. The valve assembly disclosed may include a selected profile for various applications.

PRESSURE REGULATING VALVE ASSEMBLY

A pressure regulating valve assembly includes a housing. Also included is a valve sleeve mounted within a bore of the housing, the valve sleeve having a first portion and a second portion, the second portion having a diameter less than the first portion and received in a sense piston bore of the housing. Further included is a valve spool mounted within the valve sleeve. Yet further included is a sense piston disposed within the second portion of the valve sleeve. Also included is a damping orifice extending through an end portion of the second portion of the valve sleeve. 1. A pressure regulating valve assembly comprising:a housing;a valve sleeve mounted within a bore of the housing, the valve sleeve having a first portion and a second portion, the second portion having a diameter less than the first portion and received in a sense piston bore of the housing;a valve spool mounted within the valve sleeve;a sense piston disposed within the second portion of the valve sleeve; anda damping orifice extending through an end portion of the second portion of the valve sleeve.2. The pressure regulating valve assembly of claim 1 , further comprising a filtering screen operatively coupled to the valve sleeve proximate the damping orifice.3. The pressure regulating valve assembly of claim 1 , wherein the damping orifice comprises a diameter from about 0.001 inches to about 0.020 inches.4. The pressure regulating valve assembly of claim 1 , wherein the damping orifice comprises a diameter from about 0.005 inches to about 0.015 inches.5. The pressure regulating valve assembly of claim 1 , wherein the valve sleeve comprises at least one fluid inlet port disposed at a first axial location of the valve sleeve and at least one fluid outlet port disposed at a second axial location of the valve sleeve.6. The pressure regulating valve assembly of claim 5 , wherein the at least one fluid inlet port comprises a substantially triangular geometry.7. The pressure regulating valve assembly of ...

MFLP-VALVE FOR A PRESSURE SOURCE

A mechanical fluid pressure modification valve, or “MFLP-valve”, is set forth. The MFLP-valve can be actuated upon movement of a movable pressure system member of a medical pressure system reaching a selected position. Additionally, the MFLP-valve can be actuated based on a pressure condition of the system. When the MFLP-valve unseals, a pressure differential between a pressure chamber and a volume outside of the chamber can be relieved. Disengagement of the movable pressure system member from the MFLP-valve can enable the MFLP-valve to re-seal. The MFLP-valve may include a flag that indicates the position of the movable pressure system member. The MFLP-valve may be provided in a diaphragm-type pressure source. 115-. (canceled)16. A medical pressure system including a MFLP-valve comprising:a MFLP-valve configured to extend into a fluid flow section of the medical pressure system, the MFLP-valve including an operable cover and a post connected to the operable cover, the post configured to engage an aperture of the pressure system during operation of the pressure system;a movable pressure system member; anda diaphragm member having a rigid engagement member;wherein the operable cover via the post is configured to selectively open the aperture based on selective engagement with a movable pressure system member in the system, engagement occurring when the rigid engagement member is actuated by the movable pressure system member and contacts the post.17. The medical pressure system including a MFLP-valve of claim 16 , wherein the operable cover is connectable to a pressure chamber within the medical pressure system and operably connected to a flag configured to indicate a position of the movable pressure system member in the pressure system.18. The medical pressure system including the MFLP-valve of claim 17 , the flag configured to selectively engage a sensor dependent on a position of the flag relative to the position of the movable pressure system member.19. The ...

SELF PILOTED CHECK VALVE

A self piloted check valve which utilizes closure of a piloting flapper valve to permit development of closure forces for a ball valve. The normally open ball valve has a central flow passage and simultaneously rotates and translates as it traverses between its fully open and fully closed positions. An opening bias system utilizes a combination of a first less stiff spring and a second stiffer spring. Reversible decoupling means disconnects and reconnects the second spring at a short travel distance from the normally open position of the ball, while the first spring always provides opening bias forces to the ball. The pressure induced force required to fully close the ball valve following decoupling of the second spring is more than the force required to overcome the combination of the first and second springs. Additionally, while the secondary spring is engaged, hydrodynamic damping of the ball opening movement is provided. 1. A valve apparatus comprising:(a) a tubular body having a main counterbore; and (i) a ball seat having a seat flow passage;', '(ii) a ball valve having a valve flow passage, wherein the ball valve is movable with simultaneous directly related rotation and translation to a first ball position with the valve flow passage in axial alignment with the main counterbore of the tubular body, a second ball position abutting the ball seat wherein the valve flow passage is not in fluid communication with the seat flow passage such that the main counterbore of the tubular body and the flow passage are closed, and a third ball position intermediate between the first and second ball positions;', '(iii) a pilot valve mounted within the valve flow passage, the pilot valve comprising a plurality of flappers, wherein each flapper is mounted on an individual flapper pivot pin and is rotatable between a closed position and an open position and wherein each flapper has a flapper bias spring that biases the flapper toward the closed position;', '(iv) a spring ...

PRESSURE CONTROL VALVE AND DEVICE COMPRISING SUCH A PRESSURE CONTROL VALVE , FOR CONTROLLING OR REGULATING THE PRESSURE OF A COMPRESSED FLUID IN A PILOT PRESSURE CHAMBER

A pressure control valve for controlling or regulating a pressure of a compressed fluid in a pilot pressure chamber includes a valve housing with at least one inlet which is fluidically connectable to the pilot pressure chamber, at least one outlet, a tappet mounted in the valve housing to be moved along a longitudinal axis by means of an actuation device that can be energized, and a first seal element which is mounted in the valve housing to move along the longitudinal axis and which is preloaded into a closed position by means of a first spring. The first seal element rests against a first valve seat in the closed position. The first seal element has a passage through which the compressed fluid can flow. A second seal element is secured to the tappet and can be moved by the energization of the actuation device. 13012. A pressure control valve () for controlling or regulating a pressure of a compressed fluid in a pilot pressure chamber () , comprising{'b': ['50', '41', '12', '43'], '#text': 'a valve housing () with at least one inlet (), which can be fluidically connected to the pilot pressure chamber (), and at least one outlet (),'}{'b': ['52', '50', '53'], '#text': 'a tappet (), which is mounted in the valve housing () so as to be movable along a longitudinal axis (L) by means of an actuation device () that can be energized,'}{'b': ['54', '50', '56', '54', '58', '54', '60'], '#text': 'a first seal element () which is movably mounted along the longitudinal axis (L) in the valve housing () and is preloaded by means of a first spring () into a closed position, in which the first seal element () rests against a first valve seat (), the first seal element () having a passage () through which the compressed fluid can flow,'}{'b': ['64', '52', '53', '52', '64', '54', '60', '64', '66', '66'], '#text': 'a second seal element (), which is secured to the tappet () and, by energizing the actuation device (), can be moved by means of the tappet () along the longitudinal axis ...

EMERGENCY DISPOSAL OF STORAGE CONTAINERS

A device for the emergency evacuation of a storage tank, in particular a storage tank used to store combustible media, such as hydrogen. The storage tank is connected with a chimney by way of a relief line, and the relief line exhibits at least one pneumatically actuated relief valve, wherein the latter is pneumatically held in the closed position and opened by a spring force while relieving the pneumatic control line, or held in the closed position by a spring force and pneumatically opened. 1. An arrangement for the emergency evacuation of a storage container , characterized in that the storage container is connected with a chimney by a decompression line , and the decompression line comprises at least one pneumatically actuated relief valve , wherein the at least one pneumatically actuated relief valve is either pneumatically kept in the closed position and opened by a spring force when the pneumatic control line is relieved , or is kept in the closed position by a spring force and pneumatically opened , and the means for relieving the pneumatic control line are situated at a location lying outside the potential danger zone of the storage container.2. The arrangement according to claim 1 , characterized in that the decompression line exhibits at least two pneumatically actuated relief valves claim 1 , wherein the at least two pneumatically actuated relief valves are interconnected in such a way that the decompression line is only opened once all of the relief valves have been actuated.3. The arrangement according to claim 1 , characterized in that the pneumatic control line of the relief valve has an autonomous control gas supply.4. The arrangement according to claim 1 , characterized in that the decompression line comprises a throttle claim 1 , which makes it possible to limit the quantity of the medium being discharged via the decompression line.5. The arrangement according to claim 1 , characterized in that the means for relieving the pneumatic control line in ...

ACCESS COVER IN BACKFLOW PREVENTION DEVICE

A backflow prevention device including an opening in the housing configured to provide a user with access to the upstream check valve and the downstream check valve. The backflow prevention device further includes a cover configured to cover the entirety of the opening. The cover includes a portion of a lateral surface of a right cylinder. The backflow prevention device additionally includes a seal configured to sealingly engage the cover and the housing along the perimeter of the cover. 1. A backflow prevention device , the backflow prevention device comprising:a housing defining a water flow stream;an upstream shutoff valve, wherein the upstream shutoff valve is configured to allow a user to control the water flow stream through the housing; located within the housing downstream of the upstream shutoff valve; and', an orifice, wherein the orifice is configured to allow the water flow stream through the upstream check valve; and', allow the water flow stream through the orifice when open; and', 'prevent the water flow stream through the orifice when in a closed position by mating with the orifice;, 'a clapper, wherein the clapper is configured to], 'including], 'an upstream check valve located within the housing downstream of the upstream check valve; and', an orifice, wherein the orifice is configured to allow the water flow stream through the downstream check valve;', allow the water flow stream through the orifice when open; and', 'prevent the water flow stream through the orifice when in a closed position by mating with the orifice;, 'a clapper, wherein the clapper is configured to], 'including], 'a downstream check valvea downstream shutoff valve, wherein the downstream shutoff valve is configured to allow a user to control the water flow stream through the housing;an access port in the housing configured to provide a user with access to the upstream check valve and the downstream check valve; configured to cover the entirety of the access port; and', ' ...

SHUTOFF VALVE IN BACKFLOW PREVENTION DEVICE

A backflow prevention device including an upstream shutoff valve configured to allow a user to control the water flow stream through the housing. The upstream shutoff valve includes an obstruction. The obstruction is configured to prevent water flow at a first position and allow water flow at a second position. The obstruction is also configured to rotate about an axis of rotation between the first position and the second position. The upstream shutoff valve also includes a seal. The seal is configured to sealingly engage a sealing surface in the housing at the first position. All points of engagement between the obstruction seal and the sealing surface are located downstream of the axis of rotation of the obstruction. 1. A backflow prevention device , the backflow prevention device comprising:a housing defining a water flow stream; is configured to allow a user to control the water flow stream through the housing; and', [ prevent water flow at a first position;', 'allow water flow at a second position; and', 'rotate about an axis of rotation between the first position and the second position; and, 'is configured to, 'includes a seal, wherein the seal is:, 'includes an obstruction, wherein the obstruction, 'configured to sealingly engage a sealing surface in the housing at the first position; and', 'wherein all points of engagement between the obstruction seal and the sealing surface are located downstream of the axis of rotation of the obstruction;, 'an upstream shutoff valve, wherein the upstream shutoff valve located within the housing downstream of the upstream shutoff valve; and', an orifice, wherein the orifice is configured to allow the water flow stream through the upstream check valve; and', allow the water flow stream through the orifice when open; and', 'prevent the water flow stream through the orifice when in a closed position by mating with the orifice;, 'a clapper, wherein the clapper is configured to], 'including], 'an upstream check valve located ...

Seat Valve With Electromagnetic Actuation

A seat valve with electromagnetic actuation having switching noises during closure of the seat valve should be noticeably reduced independently of a temperature of a fluid in the seat valve, without considerably increasing the production costs of the seat valve. A sealing body of the seat valve is produced from a plastic which is selected from the group (PEEK, PEI, PASU and LCP), and the flow of force for fastening and for transmitting structure-borne sound from a sealing seat to a fastening surface has at least one transition from a metallic component to a component composed of plastic and a transition from the component composed of plastic to a fastening surface of some other metallic component. The seat valve may be used in hydraulic brake systems of vehicles, but also in gear mechanisms or hydraulic systems. 1. A seat valve actuated by an electromagnet has a valve sleeve with a sealing seat , has a sealing body connected in a force-fitting manner to an armature of the electromagnet , and has two ports , namely the ports P and TN , for fluid flows , wherein closure of a fluidic connection of the ports P to TN is realized by the placement of the sealing body against the sealing seat ,wherein the sealing body is produced from a plastic which is selected from the group (PEEK, PEI, PASU and LCP),and in that the flow of force for fastening and for transmitting structure-borne sound from the sealing seat to a fastening surface has at least one transition from a metallic component to a component composed of plastic and a transition from the component composed of plastic to the fastening surface of some other metallic component.2. The seat valve according to claim 1 , wherein in a de-energized state of the electromagnet claim 1 , a fluid flow from P to TN occurs only if a pressure difference between the ports P and TN exceeds a limit value of Δp claim 1 , because a pressure force of the pressure difference overcomes a spring force of at least one spring claim 1 , and ...

VALVE SYSTEM, PIPING MANIFOLD AND PUMP SYSTEM

A valve system (), connectable to a pump system (), includes a pump assembly () connectable to a pipe (), wherein the valve system () includes a valve () including a pipe section (), of the pipe (), that defines a primary flow direction (), and a valve opening () in the pipe section, a valve seat () and a valve body (). The valve opening (), the valve seat () and the valve body () define a common valve axis () extending transversely to the primary flow direction. An operating element (), arranged at the pipe section opposite the valve opening, is configured to control the valve body for operating in a check-valve mode to open the valve opening upon a fluid flow from the valve opening towards the valve body and for operating in a shut off-valve to close the valve opening for any fluid flow direction. 1. A valve system fluidly connectable to a pump system comprising at least one pump assembly fluidly connectable to a pipe , the valve system comprising a valve , the valve comprising:a pipe section of the pipe, wherein the pipe section defines a primary flow direction;a valve opening in the pipe section;a valve seat;a valve body, wherein the valve opening, the valve seat and the valve body define a common valve axis extending transversely to the primary flow direction; the operating element is configured to control the valve body for selectively operating in a check-valve mode, in which the valve body is movable along the valve axis to open the valve opening upon a fluid flow from the valve opening towards the valve body; and', 'the operating element is configured to control the valve body for selectively operating in a shut off-valve mode, in which the valve body is fixed against the valve seat to close the valve opening for any fluid flow direction., 'an operating element arranged at the pipe section diametrically opposite from the valve opening, wherein2. The valve system according to claim 1 , wherein:the at least one valve further comprises a pump connection ...

CHECK VALVE ASSEMBLY, MEDICAL FUNCTIONAL DEVICE AND A BLOOD TREATMENT APPARATUS

The invention relates to a check valve assembly () having an inlet () and an outlet for medical fluids, comprising a valve body (), wherein the check valve assembly () in an initial state allows a flow of a working fluid and/or a sterilization fluid through the check valve assembly () in both directions of flow, that is from the inlet () to the outlet and vice versa, and wherein the check valve assembly () in an operating state allows only one direction of flow of the working fluid, wherein the check valve assembly () comprises a pin-pin-reception connection, which is embodied so that the check valve assembly () can be transferred from the initial state into the operating state by applying force on the pin-pin-reception connection and/or by an impression of path on the pin-pin-reception connection. 1100205101100100205100100100. A check valve assembly () having an inlet () and an outlet for medical fluids , with a valve body () , wherein the check valve assembly () in an initial state allows a working fluid and/or a sterilization fluid to flow through the check valve assembly () in both flow directions , that is , from the inlet () to the outlet , and vice versa , and wherein the check valve assembly () in an operating state allows only one direction of flow of the working fluid , wherein the check valve assembly () comprises a pin-pin-reception connection which is embodied such that the check valve assembly () can be transferred form the initial state into the operating state by applying force to the pin-pin-reception connection and/or by an impression of path on the pin-pin-reception connection.2100100107. The check valve assembly () according to claim 1 , wherein in the initial state the check valve assembly () comprises a bypass () for the flow through of the sterilization fluid.3100103107107. The check valve assembly () according to claim 2 , wherein the pin-reception () of the pin-pin-reception connection is the bypass () or at least partially encompasses or ...

EXHAUST GAS CONTROL VALVE AND ASSEMBLY INCLUDING THE SAME

An exhaust gas control valve for regulating a flow of exhaust gas includes a housing having an interior wall defining a housing interior, a yoke disposed in the housing interior and having a length and an axis extending along the length, with the yoke being moveable between a first and second yoke position. The exhaust gas control valve further includes a valve member including a valve shaft and a valve body. The valve member is moveable between a first valve position and a second valve position. The exhaust gas control valve also includes a retainer coupled to the yoke, and a biasing member disposed in the housing interior and coupled to the yoke and the retainer to bias the yoke and the retainer in opposite directions, with the biasing member being configured to prevent free play of the yoke and the valve member with respect to said housing. 1. An exhaust gas control valve for regulating a flow of exhaust gas , said exhaust gas control valve comprising:a housing having an interior wall defining a housing interior;a yoke disposed in said housing interior and having a length and an axis extending along said length, with said yoke being moveable between a first yoke position and a second yoke position different from said first yoke position along said axis;a valve member comprising a valve shaft having a first shaft end disposed in said housing interior and coupled to said yoke and a second shaft end spaced from said first shaft end, and a valve body adjacent said second shaft end and disposed outside said housing interior and coupled to and moveable with said valve shaft, with said valve member being moveable along said axis between a first valve position when said yoke is in said first yoke position and a second valve position when said yoke is in said second yoke position to regulate the flow of exhaust gas; anda retainer disposed in said housing interior and coupled to said yoke, with said retainer being moveable with said yoke when said yoke moves between said ...

VALVE DEVICE, A DELIVERY SYSTEM INCLUDING SAME AND METHOD

The disclosed subject matter relates to a valve device that includes a valve member located within a housing in which the valve member's operation can be bypassed. For example, the valve device can include a bypass device that has an input structure, a motion conversion structure, and an output structure. The input structure can include a portion configured to resiliently deform if a valve opening input force is applied to the input structure in an input direction. The motion conversion structure can be configured to convert the valve opening input force into motion of the output structure in an output direction that is non-parallel to the input direction. The output structure can be configured to move the valve member (e.g., from a closed state to an opened state in order to bypass normal valve operation) if the motion conversion structure is displaced in the input direction. The valve device can be used in various manners, and is particularly suitable for use in a patient fluid delivery system. 1. A valve device comprising:a housing including a fluid passage;a valve member movably mounted with respect to the housing such that the valve member is movable between a closed state position and an opened state position; and the input structure includes a portion configured to resiliently move if a valve opening input force is applied to the input structure in an input direction,', 'the motion conversion structure is configured to convert the valve opening input force into motion of the output structure in an output direction that is non-parallel to the input direction, and', 'the output structure is configured to move the valve member if the motion conversion structure is displaced in the input direction., 'a bypass device including an input structure, a motion conversion structure, and an output structure, wherein'}2. The valve device according to claim 1 , wherein the input structure includes a flexible tubular member having a proximal end and a distal end claim 1 , ...

FLOW CONTROL VALVE

Flow control valves may be positioned downstream of water meters to increase pressure and compress entrained water vapour passing through the meters. However, turbulence within such valves can cause the valve's head to move radially, bending a shaft within the valve which may break. Accordingly, there is provided a flow control valve comprising: a housing having a flow passage; a valve seat defined within the flow passage; a valve head moveable to a closed position to engage the valve seat and seal the flow passage; a shaft secured to the valve head; a support slidingly mounting the shaft within the housing; a spring biasing the valve head to the closed position and configured to maintain the valve head in the closed position until a predetermined pressure is applied; and a guide assembly extending along at least a portion of the flow passage to constrain radial movement of the valve head. 1. A flow control valve comprising:a housing having an inlet, an outlet and a flow passage extending therebetween;a valve seat defined within the flow passage;a valve head positioned in the flow passage and movable between a closed position and an open position, wherein the valve head engages the valve seat in the closed position to seal the flow passage;a spring retained within the housing, the spring biasing the valve head to the closed position and configured to maintain the valve head in the closed position until a predetermined pressure is applied to the valve head from fluid at the inlet; anda guide assembly extending along at least a part of a section of the flow passage, the guide assembly configured to engage the valve head to constrain radial movement of the valve head.2. The flow control valve of claim 1 , wherein the guide assembly is configured to constrain radial movement of the valve head when moving between the closed position and the open position.3. The flow control valve of claim 1 , wherein the guide assembly extends along the entire section of the flow passage ...

ELECTRONIC EXPANSION VALVE

An electronic expansion valve is provided, wherein a piston component and a valve needle component are located at the same side of a valve core seat. When refrigerant flows forwards, the piston component closes the bypass through hole, the refrigerant flows to a side of the vertical connecting pipe via the valve core valve port, and the valve needle component moves in the axial direction to regulate an opening of the valve core valve port. When the refrigerant flows reversely, the piston component moves upwards in the axial direction to open the bypass through hole, and the refrigerant flows to a side of the transverse connecting pipe via the bypass through hole. The electronic expansion valve ensures that the valve needle component seals the valve core valve port easily in a high pressure state when the refrigerant flows forwards, and reduces axial and radial dimensions of the valve seat 1. An electronic expansion valve , comprising a valve seat , the valve seat being provided with a valve cavity , a valve core seat being fixed in the valve cavity , and the valve core seat being provided with a valve core valve port and a bypass through hole; the electronic expansion valve further comprising a valve needle component which is movable in an axial direction to cooperate with the valve core valve port and a piston component which is movable in the axial direction to open and close the bypass through hole; and the electronic expansion valve further comprising a transverse connecting pipe functioning as an inlet connecting pipe and a vertical connecting pipe functioning as an outlet connecting pipe; wherein ,the piston component and the valve needle component are located at the same side of the valve core seat, and in a case that refrigerant flows forwards, the piston component closes the bypass through hole, the refrigerant flows to a side of the vertical connecting pipe via the valve core valve port, and the valve needle component moves in the axial direction to ...

SYSTEMS AND METHODS FOR PISTON CHECK VALVES

A piston check valve system includes a body including an upstream end and a downstream end, a bonnet secured to a proximal opening of the body, and a piston secured within the body, the piston being moveable between a closed position in which the piston rests upon a valve seat and an open position in which the piston is spaced away from the valve seat. The piston check valve system also includes a retainer configured to guide and retain the piston and to secure the valve seat within the body. 1. A piston check valve system , comprising:a body including an upstream end and a downstream end;a bonnet secured to a proximal opening of the body;a piston secured within the body, the piston being moveable between a closed position in which the piston rests upon a valve seat and an open position in which the piston is spaced away from the valve seat; anda retainer configured to guide and retain the piston and to secure the valve seat within the body.2. The piston check valve system of claim 1 , wherein the retainer includes a first surface configured to guide a proximal portion of the piston and a second surface configured to guide a distal portion of the piston.3. The piston check valve system of claim 1 , wherein the piston includes a rim configured to contact the bonnet when the piston check valve system is in an open position.4. The piston check valve system of claim 1 , wherein the valve seat is pressed by the retainer into a recess formed within the body.5. The piston check valve system of claim 4 , wherein the valve seat and the retainer are secured to each other by a protrusion that is received by a recess.6. The piston check valve system of claim 1 , wherein an outer peripheral surface of the valve seat is not welded to the body.7. The piston check valve system of claim 1 , wherein the valve seat is separable from the body and from the retainer.8. The piston check valve system of claim 1 , wherein the retainer is in contact with the bonnet at a proximal end of the ...

A PRESSURISED FLUID CYLINDER

A pressurised fluid cylinder () having a shut-off valve, comprising a valve element () on a valve stem which is linearly movable. A biasing member () exerts a biasing force on the valve element and a crank moves the valve stem. The crank comprises a first linkage () pivotally attached at one end to the valve stem and a second linkage () pivotally attached at one end to the second end of the first linkage and being positionally fixed but rotatable about the opposite end. Rotation of the first linkage () in a first rotational direction initially causes biasing of the biasing member and further rotation of the second linkage causes the linkage to pass a top or bottom dead centre position, at which point a proportion of the energy stored in the biasing member during its biasing causes the first linkage to be biased further in the first rotational direction alter the top or bottom dead centre position. 1. A pressurised fluid cylinder having a shut-off valve , the shut-off valve comprising a valve element which is movable along a main axis towards and away from a valve seat in order to close the valve; a valve stem which is constrained to move axially along the main axis to operate the valve element; a biasing member arranged to exert a biasing force on the valve element and a crank for moving the valve stem , the crank comprising a first linkage pivotally attached at one end to the valve stern and a second linkage pivotally attached at one end to the second end of the first linkage and being positionally fixed but rotatable about the opposite end; the crank being arranged so that rotation of the first linkage in a first rotational direction initially causes biasing of the biasing member and further rotation of the second linkage causes the linkage to pass a top or bottom dead centre position , at which point a proportion of the energy stored in the biasing member during its biasing causes the first linkage to be biased further in the first rotational direction after the ...

PRESSURE REDUCING VALVE

A piston regulator of a type that seals on the low-pressure side of a valve seat () includes a mechanism by which the valve can be shut off, for example for transport or storage, without risk of overloading the seat (). Two exemplary mechanisms are disclosed. The first involves applying a closing load to a regulating piston () via a closing piston () with a surface that is acted on by secondary pressure to press it away from the regulating piston (). The second arrangement is based on a nested regulating element: an inner sealing element () and outer slidable casing () are separable when a closing force is applied. This allows the casing () to transfer forces arising from secondary pressure and excessive closing force; the sealing element () is pressed onto the seat through a load supplied by a closing spring (). In both cases, the load on the seat is limited. The nested regulating element can additionally be loaded by an adjustment spring or similar to provide a variable-pressure regulated output. 1. A pressure reducing valve comprising:a supporting element that is slidable relative to a sealing element, the sealing element incorporating a sealing part for sealing a valve seat;a regulator biasing member; andan actuating mechanism that is operable to apply an actuating force to the supporting element to move it towards the valve seat, the actuating force being adjustable through a threshold value, the valve being configured such that:the supporting element is pressed by secondary pressure towards the valve seat and by the regulator biasing member away from the valve seat;the sealing element is biased by a closing biasing member towards the valve seat, the closing biasing member being fixed to the supporting element, and the supporting element includes a stop to arrest movement of the sealing element towards the valve seat wherein:the closing biasing member and threshold value of the actuating force are configured such that a load applied to the supporting element by ...

Disposable dental valve device having a check valve

A dental valve device is disclosed having a valve body having a tip receiving end, a hose receiving end, a lumen formed between the tip receiving end and the hose receiving end, a partial opening formed in the valve body, and a rotatable valve sealing body adapted to being inserted into the partial opening, the rotatable valve sealing body having a bottom having an opening, a bore for alignment with the lumen formed between the tip receiving end and the hose receiving end, the bore having a tip receiving opening and a hose receiving opening, the rotatable valve sealing body having a check valve positioned in the bore and the opening in the bottom.

WATER SUPPLY VALVE AND WATER SUPPLY VALVE ASSEMBLY FOR WALL MOUNTED DRUM TYPE WASHING MACHINE

A water supply valve for a wall mounted drum type washing machine may include an integrated inlet housing, first water supply valve outlet housing, and second water supply valve outlet housing. The water supply valve includes an inlet housing including an inlet into which water enters and a first passage along an inner cavity; a first water supply valve outlet housing integral with and adjacent to the inlet housing and configured to communicate with the first passage; and a second water supply valve outlet housing integral with and adjacent to the first water supply valve outlet housing and configured to communicate with the first passage. 1. A water supply valve assembly for a wall mounted drum type washing machine , comprising:an integrated inlet housing, first water supply valve outlet housing and second water supply valve outlet housing wherein:the inlet housing comprises an inlet into which water enters, and a first passage along an inner cavity thereof;the first water supply valve outlet housing is integral with and adjacent to the inlet housing and configured to communicate with the first passage; andthe second water supply valve outlet housing is integral with and adjacent to the first water supply valve outlet housing and is configured to communicate with the first passage.2. The water supply valve assembly of claim 1 , wherein the first water supply valve outlet housing comprises:a seating part at an upper portion of the first water supply valve outlet housing and having a first solenoid valve thereon;a protrusion on a lower portion of the first water supply valve outlet housing and having a first outlet at a lower end thereof; anda second passage extending from the first passage to the first outlet.3. The water supply valve assembly of claim 2 , wherein the first water supply valve outlet housing further comprises a plurality of insertion holes in the seating.4. The water supply valve assembly of claim 2 , wherein the second water supply valve outlet ...

SPOOL ASSEMBLY AND A VALVE COMPRISING THE SAME

A spool assembly includes an mounting base, having a upper mounting section and a lower mounting section arranged in axial direction; a first outlet, disposed between the upper mounting section and the lower mounting section; a stationary member, mounted on the lower mounting section, and having a stationary member diversion area; a movable member, one end face of which may be attached to one end face of the stationary member, and having a movable member diversion area located on the same plane with said first outlet; a mandrel, mounted on said upper mounting section and having a blocked upper end and a cavity; the lower end of said mandrel and said movable member have a diversion area located therebetween, which may be in communication with said cavity; the stationary member diversion area communicated or staggered with the mobile diversion area when the mandrel drives the movable member to rotate. 1. A spool assembly comprisingan mounting base, having a upper mounting section and a lower mounting section arranged in axial direction;a first outlet, disposed between said upper mounting section and said lower mounting section,a mandrel, having a rotating shaft and mounted on said upper mounting section;a movable member, mounted at a lower end of said mandrel and having a movable member diversion area located on the same plane with said first outlet;a stationary member, mounted on said lower mounting section, one end face of which may be attached to one end face of said movable member, and having a stationary member diversion area communicated or staggered with said mobile diversion area when said mandrel drives said movable member to rotate;wherein, said plane may be perpendicular to said rotating shaft, said mandrel has a blocked upper end and a cavity, and at least a second outlet may be disposed on an external wall of said mandrel; the lower end of said mandrel and said movable member have a diversion area located therebetween, which may be in communication with ...

BI-DIRECTIONAL INLINE CHECK VALVE

A check valve includes a housing, a first valve, and a second valve. The housing has a first portion that defines a first chamber and a second portion that defines a second chamber. The first valve is disposed within and is movable relative to the housing. The second valve is at least partially extends into the first valve. Responsive to a fluid flow in a first direction, the second valve and the first valve moves towards a proximal end of the housing and the fluid flow flows around the first valve towards a component. 1. A check valve , comprising:a housing having a first portion defining a first chamber and a second portion defining a second chamber;a first valve being disposed within and is movable relative to the housing; anda second valve that at least partially extends into the first valve, responsive to a fluid flow in a first direction, the second valve and the first valve moves towards a proximal end of the housing and the fluid flow flows around the first valve towards a component.2. The check valve of claim 1 , wherein responsive to the fluid flow in a second direction claim 1 , the first valve moves away from the proximal housing and the second valve moves relative to the first valve to facilitate the fluid flow through the first valve and around the second valve towards a fluid source.3. The check valve of claim 2 , wherein the first valve includes a valve body having a first head.4. The check valve of claim 3 , wherein the second valve includes a push rod having a second head that at least partially extends into the first head and a second valve body.5. The check valve of claim 4 , further comprising a retaining member disposed within the first chamber and defining a first spring seat.6. The check valve of claim 5 , further comprising a first biasing member that extends between the first head and the first spring seat.7. The check valve of claim 6 , further comprising a second biasing member that extends between the second head and the second valve ...

Method And Device For Controlling A Valve

A method is disclosed for controlling a valve having a spring with a spring force, an actuator with an actuator force opposing the spring force, and a pin that is actuated by the actuator, a seal element that can be coupled with the pin, and a seal seat, the valve being closed when the seal element sits against the seal seat. The method includes determining an expected natural opening time when the seal element is lifted off the seal seat based on a pressure difference in front and behind the valve, impressing a specified current on the actuator at a point in time within a specified interval prior to the natural opening time, the seal element sitting against the seal seat at the point in time such that the pin contacts the seal element and the actuator force matches the spring force, which is reduced by a specified value. 1. A method for controlling a valve having a spring with a spring force , an actuator with an actuator force that counteracts the spring force , a pin actuated by the actuator , a sealing element that configured to be coupled to the pin , and a sealing seat , wherein the valve is closed when the sealing element bears against the sealing seat , the method comprising:determining an expected natural opening time at which the sealing element lifts from the sealing seat based on a pressure difference upstream and downstream of the valve, andapplying an electrical current with a predefined value to the actuator at a time, within a predefined interval before the natural opening time, at which the sealing element bears against the sealing seat, such that the pin makes contact with the sealing element and the actuator force corresponds to the spring force reduced by a predefined value.2. The method of claim 1 , comprising: 'applying the current to the actuator with a predefined non-constant profile proceeding from a starting value of the current, at which the pin is in a position in which it permits the closure of the valve,', 'in a first operating ...

COUPLING ELEMENT FOR CONNECTING FLUID CONDUCTING CONDUITS AND CORRESPONDING COUPLING ARRANGEMENT

A coupling element for connecting a first conduit with a second conduit, includes a tubular body, a valve element arranged in the tubular body for displacement between a sealing position in which the valve element interacts with a valve seat thereby closing the coupling element, and a release position in which the valve element releases a flow connection through the coupling element; and at least one actuating arm engaging on the valve element, said at least one actuating arm traversing a wall of the tubular body in a radial direction and protruding radially over the tubular body so that when a counter coupling element coupled with the second conduit or the second conduit is pushed onto the coupling element the counter coupling element or the second conduit exerts a force on the actuating arm so that the valve element is urged from the sealing position in a direction of the release position. 1. A coupling element for connecting a first fluid conducting conduit with a second fluid conducting conduit , said coupling element comprising:a tubular body having a wall;a leak protection including a valve element arranged in the tubular body and displaceable in the tubular body between a sealing position in which the valve element rests against a valve seat to inhibit a fluid flow through the coupling element, and a release position in which the valve element is removed from the valve seat to permit a fluid flow through the coupling element; andan actuating arm operably connected to the valve element, said actuating arm being configured to traverse the wall of the tubular body in a radial direction and to extend beyond the tubular body in the radial direction so as to allow application of a force to move the valve element from the sealing position towards the release position.2. The coupling element of claim 1 , constructed for connection into the second fluid conducting conduit claim 1 , said valve element moving from the sealing position to the release position claim 1 , ...

SYSTEMS AND METHODS FOR PISTON CHECK VALVES

A piston check valve system includes a body including an upstream end and a downstream end, a bonnet secured to a proximal opening of the body, and a piston secured within the body, the piston being moveable between a closed position in which the piston rests upon a valve seat and an open position in which the piston is spaced away from the valve seat. The piston check valve system also includes a retainer configured to guide and retain the piston and to secure the valve seat within the body. 120.-. (canceled)21. A piston check valve , comprising:a body;an upstream flange;a downstream flange, the downstream flange being disposed opposite the upstream flange;a bonnet secured to the body; anda piston including a proximal end that faces the bonnet and a distal end that faces a portion of the body, the piston having a central pillar forming a narrowed portion connected between the proximal end and the distal end of the piston.22. The piston check valve of claim 21 , further including a retainer that surrounds the proximal end claim 21 , the central pillar claim 21 , and the distal end of the piston.23. The piston check valve of claim 22 , further including a resilient member positioned between the central pillar and the bonnet.24. The piston check valve of claim 23 , wherein the piston includes a recess claim 23 , the resilient member extending within the recess of the piston.25. The piston check valve of claim 22 , wherein the retainer includes a plurality of openings defined by bridges of the retainer that respectively surround each opening.26. The piston check valve of claim 25 , wherein the piston is movable between a closed position and an open position such that claim 25 , when the piston is in the closed position claim 25 , the central portion of the piston is surrounded by the bridges and the openings.27. The piston check valve of claim 21 , further including an upstream opening surrounded by the upstream flange and a downstream opening surrounded by the ...

CONTROL ELEMENT AND CHECK VALVE ASSEMBLY

An arrangement includes a housing defining a first and second ports. A first passageway provides communication between the ports; a second passageway provides communication with the first port. An element is disposed in the housing and positioned by a balance of forces, the element is positionable to throttled positions for controlling flow through the first passageway in a first direction and to an open position to permit unrestricted flow in a second direction. A check valve is disposed in the second passageway for preventing flow therein from the first port when pressure in the first port is greater than pressure in the second port, and permitting flow through the second passageway to the first port when pressure in the first port is less than the pressure in the second port thereby affecting the balance of forces acting on the element so the element is urged toward the fully open position. 1. A valve arrangement , comprising:a housing defininga first port for connection to an external fluid circuit;a second port for connection to the external fluid circuit; anda first fluid passageway providing fluid communication between the first port and the second port;a second fluid passageway providing fluid communication with the first port;a control element disposed in the housing and positioned by a balance of forces acting thereon, the control element being positionable to one or more throttled positions for controlling fluid flow through the first fluid passageway from the first port to the second port, the control element being positionable to a fully open position to permit relatively unrestricted fluid flow through the first fluid passageway from the second port to the first port; anda check valve disposed in the second fluid passageway for preventing fluid flow through the second fluid passageway from the first port when fluid pressure in the first port is greater than fluid pressure in the second port, and permitting fluid flow through the second fluid passageway ...

Ball valve with components integrated into the ball member

Embodiments provide a ball valve with components integrated into a ball member of the ball valve. The ball member includes an integrated regulating element, which may be a check valve, a pressure or flow regulating valve, or a filter. The components integrated into the ball member are positioned entirely within ends of the ball member such that the ball member can rotate to assume open and closed positions of the ball valve. The components integrated into the ball member can be configured to be removable from the ball member, for example by hand and without the use of tools, or can be configured to prohibit removal once coupled to the ball member.

TURBOCHARGER COMPRESSOR RECIRCULATION SYSTEM

Recirculation systems for engine intake air are disclosed having a turbocharger compressor with an inlet and an outlet, a recirculation pathway connecting fluid flow from the outlet of the turbocharger compressor to fluid flow into the inlet of the turbocharger compressor, and a recirculation valve assembly controlling fluid flow through the recirculation pathway. The recirculation valve assembly includes an actuator operating a valve coupled to an aspirator assembly that produces vacuum when the fluid flows through the recirculation pathway from the inlet to the outlet and when fluid flows through the recirculation pathway from the outlet to the inlet. Fluid flows through the recirculation pathway from the outlet to the inlet when the turbocharger generates boost. The vacuum generated by the aspirator assembly is in fluid communication with the actuator to move the valve between two or more positions. 1. A system comprising:a turbocharger compressor having an inlet and an outlet;a recirculation pathway connecting fluid flow from the outlet of the turbocharger compressor to fluid flow into the inlet of the turbocharger compressor; anda recirculation valve assembly controlling fluid flow through the recirculation pathway, the recirculation valve assembly comprising an electropneumatic actuator operating a valve coupled to an aspirator assembly that produces vacuum when the fluid flows through the recirculation pathway from the inlet to the outlet and when the fluid flows through the recirculation pathway from the outlet to the inlet, wherein the vacuum generated by the aspirator assembly is in fluid communication with a device requiring vacuum.2. The system of claim 1 , wherein the fluid flow through the recirculation pathway from the outlet to the inlet occurs when the turbocharger compressor generates boost.3. The system of claim 2 , wherein the vacuum produced during boost actuates the electropneumatic actuator to move the valve to a closed position.4. The system ...

COMBINED ISOLATION VALVE AND CHECK VALVE WITH INTEGRAL FLOW RATE PRESSURE, AND/OR TEMPERATURE MEASUREMENT AND FIELD CONFIGURABILITY

The present invention allows for a combination valve in a hydronic HVAC system that functions as an isolation valve; a check valve; and as a device for measuring fluid parameters, such as flow rate, pressure, and/or temperature, and also allows for the isolation valve to be configured in the field to be mounted either in a straight 180° or an angled 90° orientation, as well as at an intermediate angle. The new combination of isolation valve, check valve, with embedded sensors for flow rate, pressure, and/or temperature measurement provides a more compact product envelope that achieves space savings, e.g., by eliminating the need for separate components in an HVAC system, such as separate isolation valves, check valves, flow meters, pressure gages, and/or thermometers. 1. A combination valve having one or more embedded measurement sensors , a check valve and an isolation valve , comprising: a pipe portion with an inlet portion for receiving a fluid flow and an outlet portion for providing the fluid flow from the valve body inlet, and being configured to extend along a pipe portion axis,', 'an inlet flange portion coupled to the inlet portion and extending outwardly perpendicular to the pipe portion axis for coupling to input piping providing the fluid flow, and', 'an outlet flange portion coupled to the outlet portion and extending outwardly and obliquely to the pipe portion axis at an angle of about 45°; and, 'a) a valve body inlet having'} a corresponding pipe portion with a corresponding inlet portion for receiving the fluid flow from the valve body inlet and a corresponding outlet portion for providing the fluid flow from the valve body outlet, and being configured to extend along a corresponding pipe portion axis,', 'a corresponding outlet flange portion coupled to the corresponding outlet portion for coupling to output piping for receiving the fluid flow from the combination valve and extended outwardly perpendicular to the corresponding pipe portion axis, and ...

POPPET, ASSEMBLY, AND METHODS OF ASSEMBLING AND USING THE SAME

A poppet including a single-piece, unitary body defining a plurality of discrete sealing surfaces and a mechanical attachment configured to engage the body with a piston of a valve assembly. 1. A poppet comprising:a single-piece, unitary body defining a plurality of discrete sealing surfaces and a mechanical attachment configured to engage the body with a piston of a valve assembly.2. A valve assembly comprising:a housing defining a central axis, the housing comprising a valve body comprising an inlet passage and at least one outlet passage;a piston disposed within the housing;a modular seat disposed within the valve body in axial alignment with the piston; and a single-piece, unitary body defining a first axial end comprising a mechanical attachment adapted to mechanically attach to the piston, and', 'a second axial end comprising a plurality of discrete sealing surfaces comprising a first discrete sealing surface and a second discrete sealing surface, wherein the first discrete sealing surface is adapted to provide sealing contact with the modular seat and the second discrete sealing surface is adapted to provide sealing contact with the valve body, wherein both discrete sealing surfaces are offset from one another in the axial direction., 'a poppet comprising3. A method comprising:translating a single-piece, unitary poppet through a modular seat of a valve assembly without substantial deformation of the modular seat; andmechanically attaching the poppet to a piston of the valve assembly.4. The method of claim 3 , wherein the valve assembly further comprises a housing defining a central axis claim 3 , the housing comprising a valve body comprising an inlet passage and at least one outlet passage.5. The method of claim 3 , wherein mechanically attaching the poppet occurs through the modular seat.6. The method of claim 3 , wherein the poppet is mechanically attached to the piston through a threaded interface.7. The method of claim 4 , further comprising axially ...

BUOYANCY VEST VENT VALVE WITH RELIABLE SEATING

A vent valve for a buoyancy control device suitable for divers, where the valve may be opened by any combination of over-pressure, manual pressure relief or a powered means, where a force to a valve plug is applied by means of a spring that is constrained to prevent entirely lateral and angular movement but in which movement of the plug in the axis of the seat is unconstrained. 1. A device for venting a from a diver's buoyancy compensation bladder , the device comprising:a valve plug configured to open or to close a valve seat,a spring configured to apply force to the valve plug to close the valve seat,a piston configured to apply force to the valve plug to open the valve seat, anda manual pull dump configured to open the valve seat manually,wherein the spring is fully restrained for more than 50% of its length, and the movement of the valve plug is constrained by a centering mechanism that prevents the valve plug from moving laterally or angularly while the centering mechanism allowing movement with the face of the valve plug parallel to the valve seat along the axis of a line extending perpendicular to the valve seat under any combination of over-pressure or manual pulling action using the manual pull dump.2. A device according to wherein the valve plug is configured to be biased to open the valve seat by a pneumatically or hydraulically powered means enabling powered actuation of the valve plug and/or by the manual pull dump enabling manual actuation of the valve plug and the valve plug is configured to be biased to close the valve seat by a counterforce created by or assisted by the spring claim 1 , providing instantaneous flow ate from the powered actuation of the valve plug lower than instantaneous flow ate from the actuation of the valve plug through over-pressure relief or the manual actuation.3. A device according to wherein the valve plug is operable by the powered actuation to open first vent holes and the valve plug is operable by the actuation through ...

Combination flow control valve and reverse flow check valve

A combination flow control and reverse flow check valve controls the flow of fluid in a desired downstream direction and limits undesired backflow of liquid in an upstream direction into a fluid source such as a reservoir. The flow control and reverse flow check valve may include a housing having a fluid conveying channel with an upstream end configured for mounting to the liquid source and a downstream end for discharging fluids, a flow control valve positioned between the ends, and a check element positioned in the channel between the flow control valve and the downstream end. The check element is advantageously positioned between the flow control valve and the downstream end of the housing to prevent possible contaminants in a backflow liquid from reaching the flow control valve.

PUMP-VALVE INTEGRATED MECHANISM

A pump-valve integrated mechanism includes an air pump driven by a power source. A main air channel provided inside the valve base is connected to the air pump and has a decompression structure. The main air channel is connected to an air inflation structure which includes a branch air channel and an air nozzle. A check valve is provided inside the branch air channel. The branch air channel between the check valve and the air nozzle is provided with an air deflation hole. An electromagnetic valve is provided between the air nozzle, the air deflation hole, and the check valve. During air inflation, the electromagnetic valve controls the check valve to become connected to the air nozzle, and the air deflation hole is closed. During air deflation, the electromagnetic valve controls the air nozzle to become connected to the air deflation hole and the check valve is closed. 1. A pump-valve integrated mechanism comprises an air pump driven by a power source ,wherein the air pump is connected to a valve base, a main air channel is provided inside the valve base, the main air channel of the valve base is connected to the air pump, and the main air channel is provided with a decompression structure;the main air channel is connected to an air inflation structure, the air inflation structure comprises a branch air channel and an air nozzle, an inner end of the branch air channel is connected to the main air channel, an outer end of the branch air channel is connected to the air nozzle, a check valve is provided inside the branch air channel, a section of the branch air channel between the check valve and the air nozzle is provided with an air deflation hole; andan electromagnetic valve is provided between the air nozzle, the air deflation hole, and the check valve; during air inflation, the electromagnetic valve controls the check valve to become connected to the air nozzle, and the air deflation hole is closed; during air deflation, the electromagnetic valve controls the air ...

Lubricating grease return valve

An apparatus for the relief of grease under pressure in the delivery line of grease guns and similar pressure delivery devices includes a 3-port valve in which the relief port is located between the delivery and inlet ports and includes a one way flow control valve mounted therein. The one way flow control valve is maintained in a closed position by the pressure of the grease and is activated to be opened to reduce the pressure in the valve body and allow the grease to return to the grease reservoir.

Sealing packing coupled to container lid

The present invention has the advantage of allowing a user to establish or release a seal between a container and a container lid with a single touch through a seal packing made of an elastic material and having a simple structure.

Frequency-Dependent Damping Valve Arrangement

A damping valve arrangement () for a vibration damper includes a damping piston () with a check valve, which damping piston () divides a cylinder () of the vibration damper into a first working chamber () and a second working chamber (), and a control arrangement () with a control pot () and a control piston () which is axially movable therein. A connection channel () connects the first working chamber () to the second working chamber (). The connection channel () is arranged such that it is at least partially closed by the control piston () during an axial displacement of the control piston () in direction of the damping piston () and opened again during an axial displacement of the control piston () in direction of the pot base (). 19- (canceled)10. A damping valve arrangement for a vibration damper , comprising:a piston rod;a cylinder at least partially filled with damping fluid;an axially displaceable damping piston arranged inside said cylinder and axially fixed to said piston rod, said damping piston comprising at least one flow channel formed in the damping piston and covered by at least one valve disk, said damping piston dividing said cylinder into a first working chamber on the piston rod side and a second working chamber remote of the piston rod;a control arrangement arranged at said piston rod coaxial to said damping piston and comprising a control pot having a cylindrical pot wall and a disk-shaped pot base arranged at an end of said control pot remote of said damping piston, said control arrangement further comprising an axially displaceable control piston arranged in said control pot and constructed to axially limit a control space enclosed in said control pot;said damping valve arrangement further comprising an inlet connection connecting said first working chamber to said control space, and wherein at least one spring arrangement is arranged between said control piston and said damping piston; said spring arrangement configured to load said valve ...

CONTROL VALVE

A control valve () for controlling liquid flow in a heating and/or cooling installation under command from an actuator. The control valve () comprises a flow regulator with a first annular valve member () and a second annular valve member () that have an axial overlap. The first valve member () is manually rotatable relative to the second valve member (). The axially overlapping portions of the valve members () define a first inlet opening () with a variable circumferential extent and a second inlet opening () with a variable circumferential extent. The first inlet opening () is axially offset relative to the second inlet opening (). A third valve member () is axially displaceable by the actuator relative to the first- and second inlet openings () and defines a first control edge () associated with the first inlet opening () and defines a second control edge () associated with the second inlet opening (). Rotation of the first valve member () relative to the second valve member () simultaneously changes the circumferential extent of the first and second inlet openings (), in order to manually preset a maximum through-flow area. Axial displacement of the third valve member () changes the axial extent of the through-flow area of the first and second inlet openings (), in order to regulate the through-flow area of the first and second inlet openings () within a range limited by the preset maximum. A differential pressure regulator is provided downstream of the flow regulator. 111. A control valve () for controlling liquid flow in a heating and/or cooling installation under command from an actuator , the control valve () comprises:{'b': 2', '3', '4', '4, 'a valve housing () with an inlet () and an outlet (), and a differential pressure regulator downstream of the flow regulator with an outlet of the differential pressure regulator being in fluid connection with the outlet (), and'} [{'b': '20', 'a first valve member () having an annular or penannular portion with a ...

VALVE AND FUEL CELL SYSTEM

A valve includes a cap, a diaphragm defining a movable portion, a valve housing, and a valve portion. An inlet port through which fluid flows into a valve chamber, an outlet port through which the fluid flows out from the valve chamber, and a placement portion on which a peripheral edge portion of the diaphragm is placed are provided in the valve housing. The diaphragm includes a peripheral edge portion, a center portion, a connecting portion connecting the peripheral edge portion and the center portion, and a pusher. The connecting portion has a wave shape from the peripheral edge portion side toward the center portion side such that the connecting portion first projects to a valve body portion side, and next projects to the cap side. 1. (canceled)2. A valve comprising:a valve housing including an inlet port and an outlet port;a diaphragm including a center portion, a peripheral edge portion located outside of the center portion, and a connecting portion connecting the center portion and the peripheral edge portion, the peripheral edge portion being located on the valve housing and defining a valve chamber together with the valve housing, and the center portion and the connecting portion being displaced due to pressure of a fluid in the valve chamber;a pressure receiving plate that is located on the center portion of the diaphragm;a valve body that is arranged in the inlet port and is deformed in response to displacement of the diaphragm to block or release inflow of the fluid into the valve chamber through the inlet port; anda cap configured to hold the peripheral edge portion of the diaphragm between the cap and the valve housing; whereinthe connecting portion of the diaphragm has a wave shape extending from a side of the peripheral edge portion toward a side of the center portion such that the connecting portion first projects toward the valve body, and next projects toward the cap.3. The valve according to claim 2 , wherein the connecting portion of the ...

Pulse-width-regulating valve

A pulse-width-regulating valve is for the regulation of a fluid flow or a fluid pressure. The pulse-width-regulating valve comprises a cut-off valve connected in series with an inflow valve, at least one of the cut-off valve and the inflow valve being provided with an axially displaceable or rotatable valve element which has an opening position or a closing position at a distance from a starting position of the valve element. A method of operating a pulse-width-regulating valve comprises: regulating a valve gear device by a valve synchronizer, in accordance with at least two displacement curves; and by one or more valve actuators, displacing or rotating corresponding valve elements arranged in the pulse-width-regulating valve. 1. A pulse-width-regulating valve for the regulation of a fluid flow or a fluid pressure , the pulse-width-regulating valve comprising a cut-off valve connected in series with an inflow valve , at least one of the cut-off valve and the inflow valve being provided with an axially displaceable or rotatable valve element , wherein said valve element has an opening position or a closing position at a distance from a starting position of the valve element offering gliding port transitions.2. The pulse-width-regulating valve according to claim 1 , wherein at least one of the cut-off valve and the inflow valve are selected from a group consisting of a shell valve claim 1 , a slide valve and a fully or partially rotating valve.3. The pulse-width-regulating valve according to claim 1 , wherein the cut-off valve exhibits an opening speed claim 1 , which is greater than the closing speed claim 1 , and the inflow valve exhibits a closing speed claim 1 , which is greater than the opening speed.4. The pulse-width-regulating valve according to claim 1 , wherein at least one of the cut-off valve and the inflow valve is connected to a valve gear device.5. The pulse-width-regulating valve according to claim 4 , wherein the valve gear device is formed by at ...

Pilot-operated valve with floating piston

A pilot-operated proportional cartridge valve that has low internal leakage and long life, without requiring close ID/OD spool clearances that add cost to comparable prior art valves. The flow control valve is uniquely characterized by the use of two axially spaced-apart spring energized wiper seals that floatingly support a flow control piston within a cylindrical chamber to allow transaxial shifting movement of the piston for proper alignment with mating components, such as a valve seat. The spring energized wiper seals are preferably oriented in opposite directions for sealing against pressure differentials at opposite ends of the valve piston. In a preferred embodiment, the seals are spring energized cup seals.

Residual Load Relief System for Hydraulic Compactors Having Rotary Pumps

An automatic residual load relief system for hydraulic compactors having rotary pumps relieves residual load inherent in the compacted material by releasing hydraulic fluid from the cylinder prior to reversal of the rotary pump while preventing the fluid from returning to the pump. The system comprises in general a rotary pump powered by a motor, one-way suction check valves, a flow check valve, a one-way, normally-open, pilot operated check valve, a cylinder comprising a reciprocating piston, the piston defining a disk void and an annular void within the cylinder, and a tank. 1the combination of a rotary pump powered by a motor, first and second one-way suction check valves, a one-way flow check valve, a one-way, normally-open, pilot operated check valve, a cylinder comprising a reciprocating piston, the piston defining a disk void and an annular void within the cylinder, first and second cylinder ports, first and second supply ports, first and second tank return ports, and a tank, all connected in fluid communication by conduits, with a first conduit segment extending between the first supply port and the one-way flow check valve and a second conduit segment extending between the one-way flow check valve and the first supply port, and with the one-way, normally-open, pilot operated check valve in operational communication through a pilot line with the first conduit segment and in fluid communication with the second conduit segment;whereby during a compaction stroke the motor rotates the rotary pump in a first direction such that hydraulic fluid, comprising fluid returned from the annular void of the cylinder and fluid drawn as needed from tank through the second suction check valve, passes through the first supply port, the first conduit segment, the flow check valve, the second conduit segment and the first cylinder port into the disk void of the cylinder;whereby the normally-open pilot operated check valve in communication with the first conduit segment through ...

ACTUATOR APPARATUS HAVING INTEGRAL YOKE TUBING

An actuator apparatus includes and actuator and a yoke. The actuator includes an upper casing and a lower casing defining a cavity and an actuating device disposed at least partially within the cavity and dividing the cavity into an upper chamber and a lower chamber. The yoke is connected to the actuator and has an actuator spring disposed within a body of the yoke and a yoke tube extending longitudinally through the body of the yoke. The yoke tube extends from an aperture in the lower casing of the actuator and provides an air passage that fluidly connects the lower chamber of the actuator and a controller. 1. An actuator apparatus , comprising:an actuator comprising an upper casing and a lower casing defining a cavity and an actuating device disposed at least partially within the cavity and dividing the cavity into an upper chamber and a lower chamber; anda yoke connected to the actuator and comprising an actuator spring disposed within a body of the yoke and a yoke tube extending longitudinally through the body of the yoke, the yoke tube extending from an aperture in the lower casing of the actuator and providing an air passage that fluidly connects the lower chamber of the actuator and a controller.2. The actuator apparatus of claim 1 , wherein the upper casing of the actuator comprises a vent assembly.3. The actuator apparatus of claim 1 , wherein the actuating device is a diaphragm.4. The actuator apparatus of claim 3 , further comprising:a diaphragm plate disposed adjacent the diaphragm; andan actuator stem extending at least partially through the body of the yoke and connected to the diaphragm plate to operatively connect the diaphragm to the actuator stem.5. The actuator apparatus of claim 4 , further comprising a spring seat mounted on the actuator stem and a spring adjuster threaded onto the actuator stem to adjust the position of the spring seat and the pre-load of the actuator spring.6. The actuator apparatus of claim 4 , further comprising a second ...

METHOD AND SYSTEM FOR PRE-PROGRAMMED SELF-POWER MICROFLUIDIC CIRCUITS

A major challenge for the general use of “lab-on-a-chip” (LOAC) systems and point-of-care (POC) devices has been the generally complex and need for sophisticated peripheral equipment, such that it is more difficult than anticipated to implement low cost, robust and portable LOAC/POC solutions. It would be beneficial for chemical, medical, healthcare, and environmental applications to provide designs for inexpensive LOAC/POC solutions compatible with miniaturization and mass production, and are potentially portable, using compact possibly hand-held instruments, using reusable or disposable detectors. Embodiments of the invention address improved circuit elements for self-powered self-regulating microfluidic circuits including programmable retention valves, programmable trigger valves, enhanced capillary pumps, and flow resonators. Additionally embodiments of the invention allow for the flow direction within a microfluidic circuit to be reversed as well as for retention of reagents prior to sale or deployment of the microfluidic circuit for eased user use. 1. A device comprising:a first microfluidic channel having a first predetermined width, a first predetermined depth and at least a sidewall;a second microfluidic channel having a second predetermined width and a second predetermined depth, the second microfluidic channel disposed with a first end at a first predetermined offset from the first microfluidic channel and having an axis orientated at a first predetermined angle relative to the sidewall of the first microfluidic channel;a third microfluidic channel having a third predetermined width less than that of the second predetermined width and a third predetermined depth less than that of the second predetermined depth, the third microfluidic device disposed between the first end of the second microfluidic channel and the sidewall of the first microfluidic channel and having an axis orientated at a second predetermined angle relative to an axis of the first ...

DUAL/VARIABLE GAIN OIL PUMP CONTROL VALVE

A solenoid fluid control valve is disclosed for controlling a variable displacement pump. The solenoid fluid control valve comprises a fixed solenoid component, a movable armature component, a fixed nozzle body, a movable spool within the fixed nozzle body, and a valve member. The valve member regulates fluid pressure in a first and second feedback chamber. Fluid in the second feedback chamber establishes a second feedback pressure that acts on the movable spool with a motive feedback force in a first axial direction. The movable spool moves in the first axial direction in response to the motive feedback force. 1. A solenoid fluid control valve comprising:a fixed solenoid component;a movable armature component;a fixed nozzle body;a movable spool within the fixed nozzle body; anda valve member to regulate fluid pressure in a first and second feedback chamber.2. The solenoid fluid control valve of claim 1 , wherein the fixed solenoid component includes a piston claim 1 , and wherein an end of the movable spool moves axially within an inner area of the piston.3. The solenoid fluid control valve of claim 2 , wherein a bore in the movable spool opens to the inner area of the piston to create the first feedback chamber.4. The solenoid fluid control valve of claim 2 , wherein a radial space between an inner surface of an end of the fixed nozzle body and an outer surface of the piston comprises the second feedback chamber.5. The solenoid fluid control valve of claim 1 , wherein the fixed nozzle body has at least one supply port claim 1 , and wherein a bore in the movable spool allows fluid to flow from the at least one supply port to the first feedback chamber.6. The solenoid fluid control valve of claim 5 , wherein a pressure is established at the supply port claim 5 , and wherein the fluid pressures in the first and second feedback chambers are proportional to the pressure established at the supply port.7. The solenoid fluid control valve of claim 1 , wherein fluid in the ...

Packaging bag fresh-keeping exhaust valve structure

A packaging bag fresh-keeping exhaust valve structure is an exhaust valve and includes a valve body, a valve plate and a preservative. The valve body includes a partition to partition its internal space into a valve chamber and a filling chamber. The partition has at least one through hole, so that the valve chamber communicates with the filling chamber through the through hole. The valve plate is disposed in the valve chamber. An outer peripheral edge of the valve chamber has a flange extending outwardly. A surface of the flange is provided with a first sealing film to confine the valve plate within the valve chamber. The preservative is disposed in the filling chamber. An inlet end of the filling chamber is provided with a breathable film to confine the preservative within the filling chamber. An outer end of the breathable film is provided with a second sealing film. 1. A packaging bag fresh-keeping exhaust valve structure , being an exhaust valve , comprising a valve body , a valve plate and a preservative; the valve body being provided with a partition to partition an internal space of the valve body into a valve chamber and a filling chamber; the partition being formed with at least one through hole so that the valve chamber and the filling chamber communicate with each other through the through hole; the valve plate being disposed in the valve chamber , an outer peripheral edge of an open end of the valve chamber being provided with a flange extending radially outwardly , a surface of the flange being provided with a first sealing film to confine the valve plate within the valve chamber; the preservative being disposed in the filling chamber , an inlet end of the filling chamber being provided with a breathable film to confine the preservative within the filling chamber , an outer end of the breathable film being provided with a second sealing film;wherein, when not in use, the preservative filled in the filling chamber of the exhaust valve is sealed by the ...

MOTORIZED SLEEVE VALVE

A motorized sleeve valve () is provided. The motorized sleeve valve () includes a valve body () defining a first fluid port () and a second fluid port () and a valve sleeve () surrounding at least a portion of the valve body () and configured to move between a first position and at least a second position to selectively allow fluid to flow through the second fluid port (). The motorized sleeve valve () further includes an electric motor () configured to actuate the valve sleeve () between the first position and the second position. 1200. A motorized sleeve valve () , comprising:{'b': 201', '207', '208, 'a valve body () defining a first fluid port () and a second fluid port ();'}{'b': 202', '201', '208, 'a valve sleeve () surrounding at least a portion of the valve body () and configured to move between a first position and at least a second position to selectively allow fluid to flow through the second fluid port (); and'}{'b': 205', '202, 'an electric motor () configured to actuate the valve sleeve () between the first position and the second position.'}2200201210211209. The motorized sleeve valve () of claim 1 , wherein the valve body () comprises a first valve body end () and a second valve body end () separated by one or more support arms ().3200208210211. The motorized sleeve valve () of claim 2 , wherein the second fluid port () is defined by the first valve body end () and the second valve body end ().4200311211210207208. The motorized sleeve valve () of claim 2 , further comprising a protrusion () extending from the second valve body end () towards the first valve body end () to direct fluid between the first and second fluid ports ( claim 2 , ).5200205206202. The motorized sleeve valve () of claim 1 , wherein the electric motor () comprises a threaded spindle () threadedly engaging the valve sleeve ().6200203204204202200. The motorized sleeve valve () of claim 1 , further comprising one or more sealing members ( claim 1 , ) claim 1 , wherein at least one of ...

RELIEVABLE CHECK VALVE FOR MEDICAL LINES

This invention concerns relievable normally closed check valves for use in conjunction with fluid delivery systems for medical patients, as well as methods for making and using valves. In the medical context, such valves function at very low fluid pressures, and include a multi-part valve body made from upper and lower housings capable of movement relative to each other that, when operably connected, dispose between them a compliant or deformable, resilient valve element normally biased in the closed position against a valve seat present on the inner surface of the upper housing. The upper housing also includes a lower housing seat. The inside surface of the lower housing contains or supports a structure that positions the valve element to engage the valve seat in the absence of fluid pressure above the valve's pre-determined cracking pressure. The valve's flow prevention function may be relieved in the absence of sufficiently pressurized fluid by causing the valve element to disengage from the valve seat, for example, by adjusting the valve body to distance the valve element from the valve seat. 1. A relievable one-way check valve , comprising:(a) a valve housing having a valve seat;(b) a valve element within the valve housing that is biased against the valve seat in a normally closed position but that opens when exposed to a pressure differential that meets or exceeds a rated cracking pressure for the valve; and(c) a valve relief feature that, when actuated a user, opens the valve to fluid flow at a pressure that is less than a rated cracking pressure for the valve.2. A valve according to claim 1 , wherein the valve relief feature claim 1 , when actuated claim 1 , causes change in a physical relationship between the valve seat and valve element claim 1 , resulting in fluid flow through the valve even if the pressure differential across the valve element is less than the rated cracking pressure for the valve.3. A valve according to claim 1 , wherein the valve ...

Piston-Controlled Anti-Siphon Valve

The present application relates to an anti-siphon valve for a tank including a body with an inlet, an outlet, and a passage for the fluid, the passage connecting the inlet to the outlet. The anti-siphon valve further includes a movable cut-off device interacting with a seat to close the passage. The cut-off device normally remains in the closed position and is designed to open the passage in the presence of a positive pressure difference between the inlet and the outlet. The anti-siphon valve further includes an auxiliary control mechanism for the cut-off device towards the passage opening, the control mechanism being designed to act on the cut-off device only to open the passage, so as to enable the cut-off device to move under the effect of pressure at the outlet independently of the mechanism. 1. An anti-siphon valve for a tank of fluid , comprising:a body having an inlet, an outlet, and a passage for the fluid, the passage connecting the inlet to the outlet;a movable cut-off device mating with a seat to close the passage, the cut-off device being normally in a closed position and designed to open the passage in the presence of a pressure difference between the inlet and the outlet that is greater than a positive threshold value; andan auxiliary control mechanism operably associated with the cut-off device, the auxiliary control mechanism being disposed toward the open position of the passage;wherein the auxiliary control mechanism of the cut-off device is configured to act on the cut-off device only in the opening direction of the passage, so as to enable the cut-off device to open under the effect of the pressure difference independently of the auxiliary control mechanism.2. The anti-siphon valve according to claim 1 , wherein the auxiliary control mechanism is actuated by a fluid.3. The anti-siphon valve according to claim 1 , wherein the fluid is a liquid.4. The anti-siphon valve according to claim 1 , wherein the auxiliary control mechanism comprises:a ...

Water Pump with Check Valve

A water pump has a check valve with a valve body movable in a direction of a valve axis of the check valve between an open position of the check valve and a closed position of the check valve. An actuating device is connected with the check valve and has an operating element that is movable coaxially to the valve axis. The operating element is operatively connected to the valve body and arranged such that the operating element, by applying a coaxial force to the valve body, transfers the valve body into a venting position of the check valve. 1. A water pump comprising:a check valve comprising a valve body movable in a direction of a valve axis of the check valve between an open position of the check valve and a closed position of the check valve;an actuating device connected with the check valve and comprising an operating element movable coaxially to the valve axis;the operating element operatively connected to the valve body and arranged such that the operating element, by applying a coaxial force to the valve body, transfers the valve body into a venting position of the check valve.2. The water pump according to claim 1 , further comprising a follower arranged on the valve body claim 1 , wherein the actuating device is arranged on an open side of the check valve claim 1 , and wherein the operating element is connected to the follower such that a pulling action applied by the operating element on the follower transfers the valve body into the venting position of the check valve.3. The water pump according to claim 3 , wherein the follower and the valve body are formed together as one piece.4. The water pump according to claim 3 , wherein the operating element is connected to the follower by a connection enabling the operating element to move coaxial to the valve axis.5. The water pump according to claim 4 , wherein the connection of the follower and the operating element provides a free range of movement in an axial direction of the valve axis and the free range ...

REVERSE FLOW CHECK VALVE IN HYDRAULIC VALVE WITH SERIES CIRCUIT

A valve assembly includes a valve body having at least a first bore and a second bore, a flow passage connecting the first bore to the second bore, a plurality of ports opening to each bore respectively, the first bore being upstream of the second bore. First and second spools are disposed in the first and second bores, respectively, for controlling the flow of fluid to and from the respective ports. A check valve is disposed in the flow passage and configured to prevent fluid flow from the second spool towards the first spool through the flow passage while allowing fluid flow from one of the ports in the first bore towards the second spool through the flow passage. 1. A valve assembly including:a valve body having at least a first bore and a second bore, a flow passage connecting the first bore to the second bore, a plurality of ports opening to each bore respectively, the first bore being upstream of the second bore;first and second spools disposed in the first and second bores respectively for controlling the flow of fluid to and from the respective ports; anda check valve disposed in the flow passage and configured to prevent fluid flow from the second spool towards the first spool through the flow passage while allowing fluid flow from one of the ports in the first bore towards the second spool through the flow passage.2. The valve assembly according to any preceding claim , wherein the valve body further includes a third bore downstream of the second bore and a second flow passage connecting the second bore to the third bore.3. The valve assembly according to claim 2 , further including a third spool disposed in the third bore and a check valve disposed in the second flow passage and configured to prevent fluid flow from the third spool towards the second spool through the second flow passage while allowing fluid flow from one of the ports in the second bore towards the third spool through the second flow passage.4. The valve assembly according to any ...

Check valve ball stop having gasket compression stand off

This disclosure concerns a check valve that prevents over compression of a gasket. The check valve comprises a valve housing, a valve cover, and a gasket that seals between the valve housing and the valve cover. A ball fits within the valve housing. The check valve further comprises a ball stop that limits compression of the gasket as the valve cover is tightened with respect to the valve housing. The ball stop serves as a standoff between the valve housing and the valve cover that allows some compression of the gasket as the valve cover is tightened with respect to the valve housing, but at some degree of tightening the incompressible engages both the valve cover and the valve housing to prevent further tightening. Over-compression distorts the gaskets, possibly compromising its sealing function and possibly damaging the gasket.

HAND AIR PUMP INFLATING DEVICE

A hand air pump inflating device includes a cylinder body, a tubular shaft and a tubular piston rod extending longitudinally, larger and smaller end caps respectively enclosing rear ends of the piston rod and the cylinder body, front and rear piston ring modules respectively enclosing a front end of the piston rod and a rear end of the tubular shaft, and a one-way check valve disposed between the rear end of the tubular shaft and the rear piston ring module. The piston rod is movable forward and rearward relative to the cylinder body and the tubular shaft for inflating an inflatable object. 1. A hand air pump inflating device comprising:a nozzle having an inflating conduit formed therein; and a cylinder body extending in a longitudinal direction to terminate at opened front and rear cylinder ends, said front cylinder end being fixed to said nozzle,', 'a tubular shaft disposed within said cylinder body and extending in the longitudinal direction to terminate at opened front and rear shaft ends, said front shaft end being fixed to said nozzle and in air communication with said inflating conduit,', 'a tubular piston rod movably disposed within said cylinder body, surrounding said tubular shaft, and extending in the longitudinal direction to terminate at opened front and rear piston ends, such that said tubular piston rod is movable relative to said cylinder body and said tubular shaft in the longitudinal direction to reciprocate a rearward stroke and a forward stroke,', 'a larger end cap disposed on and enclosing said rear piston end,', 'a smaller end cap disposed on and enclosing said rear cylinder end and sleeved on and in air-tight and movable engagement with said tubular piston rod,', 'a front piston ring module disposed on and enclosing said front piston end and having an outer ring portion which is in frictional engagement with said cylinder body to divide a space between said cylinder body and said piston rod into first and second chambers respectively close to ...

UNLOADING RELIEF VALVE

A valve for a brake cooling system may include a body including a first and a second end, a first at least one radial passage, and a second at least one radial passage fluidly communicable with the first end. A first seat may be disposed within the body proximate the first end, while a plug may include a stop, a collar, and a first trunk disposed between the stop and the collar. The collar and the first trunk may be disposed in the body while an adapter may include a second seat, a head, and a second trunk disposed between the second seat and the head. The second seat and the second trunk may be disposed in the plug with a chamber, fluidly communicable with the adapter and the first at least one radial passage, being defined in the first trunk of the plug. An actuator may be slidably disposed in the chamber, and be in operative association with a biasing member. A poppet may be in operative association with the biasing member and the first seat. 1. A valve for a brake cooling system , the valve comprising:a body including a first end, a second end, a first at least one radial passage, and a second at least one radial passage fluidly communicable with the first end;a first seat disposed within the body proximate the first end;a plug including a stop, a collar, and a first trunk disposed between the stop and the collar, the collar and the first trunk disposed in the body;an adapter including a second seat, a head, and a second trunk disposed between the second seat and the head, the second seat and the second trunk disposed in the plug;a chamber defined in the first trunk of the plug, the chamber fluidly communicable with the adapter and the first at least one radial passage;an actuator slidably disposed in the chamber;a biasing member in operative association with the actuator; anda poppet in operative association with the biasing member and the first seat.2. The valve of claim 1 , further including a check valve in fluid communication with the adapter.3. The valve ...

CHECK VALVE AND LIQUID DELIVERY PUMP

A check valve is provided with a rectilinear flow passage having a liquid inlet and a liquid outlet and allowing a liquid to flow therethrough in one direction, and a first valve body, a first valve seat, a second valve body, and a second valve seat are provided in the rectilinear flow passage. A first drive body is provided in the rectilinear flow passage at a position closer to the liquid inlet than the first valve body so as to be movable in one direction. The first drive body is driven in one direction by the drive mechanism. The drive mechanism is adapted to set the first drive body either to an open state in which the first drive body presses the first valve body toward the liquid outlet side to detach the first valve body from the first valve seat or to a closure state in which the first drive body does not press the first valve body toward the liquid outlet but allows the first valve body to be seated on the first valve seat. A second drive body is provided in the rectilinear flow passage at a position between the first valve body and the second valve body so as to be movable in one direction. When the first drive is set to the open state, the second drive body is pressed by the first valve body toward the liquid outlet to press the second valve body toward the liquid outlet, thereby detaching the second valve body from the second valve seat, and when the first drive body is set to the closure state, the second drive body is moved away from the second valve body to allow the second valve body to be seated on the second valve seat. 1. A check valve comprising:a rectilinear flow passage having a liquid inlet that allows a liquid to flow in and a liquid outlet that allows a liquid to flow out and configured to flow a liquid in one direction;a first valve body arranged in the rectilinear flow passage so as to be movable in the one direction;a first valve seat arranged on a side of the liquid inlet than the first valve body, having a flow passage forming a part ...

Air valve assembly and inflatable product

An air valve assembly and an inflatable product are provided. The air valve assembly includes a valve body and a plug; where the valve body includes: a first chamber including a first air inlet and a first air outlet; a plurality of second chambers, where each of the plurality of second chambers includes a second air inlet and a second air outlet; a separating portion fixedly disposed between two adjacent second chambers and configured to separate the two adjacent second chambers; and at least one valve spool assembly disposed within the valve body and configured to control flow of air in the valve body; and the plug is detachably connected with the valve body to prevent flow of air; where the first air outlet is communicated with the second air inlet of each of the plurality of second chambers. Therefore, inflation or deflation process can be simplified and timesaving.

PRESSURE COMPENSATION VALVE

A pressure compensation valve comprises a valve body, a valve sleeve fixedly mounted on the valve body, and a spool disposed in a valve hole of the valve body and capable of moving. The pressure compensation valve can change the pressure compensation characteristic, that is, the pressure compensation valve can change the difficult degree of the pressurized oil liquid flowing by changing an effective pressure acting surface of the pressure compensation valve The structure is simple, requires low cost, and increases the utilization rate of a product. 1121341234542504246741344ecaad. A pressure compensation valve comprising a valve body () , a valve sleeve () fixedly mounted on the valve body () , and a spool () disposed in a valve hole () of the valve body () and capable of moving , wherein the valve sleeve () and the spool () are sequentially provided with a piston () and a return spring () , the piston () is placed on an inner hole of the valve sleeve () , the return spring () is internally provided within a pressure chamber () formed between the piston () and the valve sleeve () , and acts on a transverse end surface of the piston () , a check valve () only allowing a single-direction flow to an LS flow channel () is disposed in an oil feeding chamber () of the valve body () , and the spool () establishes or blocks a connection between the oil feeding chamber () and an oil discharging chamber ().23431240514344cad. The pressure compensation valve of claim 1 , wherein an upper end surface and a lower end surface (A) claim 1 , (A) of the spool () have the same cross-sectional area as an upper end surface (A) and a lower end surface (A) of the piston () claim 1 , and a load pressure Pls from the pressure chamber () and the return spring () act on the upper end surface (A) of the piston to drive the piston () to slide downward and to push the spool () upwards in a direction that blocks the connection between the oil feeding chamber () and the oil discharging chamber (). ...

Damping Valve Arrangement

A damping valve arrangement of a vibration damper for a motor vehicle includes a damping valve body having a longitudinal axis A and a throughflow passage is covered by at least one valve disk, a spring arrangement has at least a first substantially disk-shaped spring element; and a force transmission disk arranged between the valve disk and the first spring element so as to be axially displaceable coaxial to the damping valve body. The force transmission disk has a first surface facing the first spring element and comprising a first contact ring with a first diameter, which first contact ring is axially elevated above the first surface, and a second surface opposite the first surface, which second surface faces the valve disk and comprises a second contact ring with a second diameter, which second contact ring is axially elevated above the second surface.

REGENERATION DEACTIVATION VALVE AND METHOD

Systems and methods use selective regeneration to aid in controllability and efficiency of a hydraulic circuit. A regeneration deactivation valve can react to a differential pressure when the function is in free air and at risk of cavitating or when then function is doing positive work and needs to be efficient. When the function is at risk of cavitating, the regeneration deactivation valve can react to the potential for cavitation and the regeneration deactivation valve closes so the function regenerates. The regeneration deactivation valve can also react when the function is not at a risk of cavitating and can open up allowing the function to move with more power and efficiency. 1. A hydraulic regeneration deactivation valve to react to a pressure and to deactivate regeneration of a hydraulic cylinder , the valve comprising:a body including a tank return node for connection to a tank, a driving workport for connection to a first chamber of the hydraulic cylinder, a return workport for connection to a second chamber of the hydraulic cylinder, the first chamber and the second chamber separated by a piston, and a regeneration node, the regeneration node for connection to the driving workport and for connection to the return workport;a flow control valve received in the body and having a first fluid path between the regeneration node and the tank return node, the first fluid path being substantially unrestricted in a first flow control valve position, and the first fluid path being restricted in a second flow control valve position; andthe flow control valve responsive to a sense pressure in the driving workport to move between the first flow control valve position and the second flow control valve position.2. The hydraulic regeneration deactivation valve according to claim 1 , wherein a regeneration fluid path between the second chamber and the first chamber includes a check valve to prevent the reverse flow of fluid from the first chamber to the second chamber.3. ...

REVERSE FLOW CHECK VALVE IN HYDRAULIC VALVE WITH SERIES CIRCUIT

A valve assembly includes a valve body having at least a first bore and a second bore, a flow passage connecting the first bore to the second bore, a plurality of ports opening to each bore respectively, the first bore being upstream of the second bore. First and second spools are disposed in the first and second bores, respectively, for controlling the flow of fluid to and from the respective ports. A check valve is disposed in the flow passage and configured to prevent fluid flow from the second spool towards the first spool through the flow passage while allowing fluid flow from one of the ports in the first bore towards the second spool through the flow passage. 1. A valve assembly including:a valve body having at least a first bore and a second bore, a flow passage connecting the first bore to the second bore, a plurality of ports opening to each bore respectively, the first bore being upstream of the second bore;first and second spools disposed in the first and second bores respectively for controlling the flow of fluid to and from the respective ports; anda check valve disposed in the flow passage and configured to prevent fluid flow from the second spool towards the first spool through the flow passage while allowing fluid flow from one of the ports in the first bore towards the second spool through the flow passage.2. The valve assembly according to claim 1 , wherein the valve body further includes a third bore downstream of the second bore and a second flow passage connecting the second bore to the third bore.3. The valve assembly according to claim 2 , further including a third spool disposed in the third bore and a check valve disposed in the second flow passage and configured to prevent fluid flow from the third spool towards the second spool through the second flow passage while allowing fluid flow from one of the ports in the second bore towards the third spool through the second flow passage.4. The valve assembly according to claim 1 , wherein the ...

CONVERTIBLE VALVE WITH RETAINED CONVERSION ELEMENT

A convertible valve having a conversion element retained in a seat to convert a valve gate from bidirectional flow to unidirectional flow. The convertible valve includes a valve gate moveable between a first open position and a second closed position, a seat moveable between a first position and a second position, and a conversion element retained in the seat. The seat, in its first position, maintains the valve gate in its first open position. With the valve gate in the first open position, the convertible valve allows bi-directional fluid flow. Fluid flowing through the convertible valve creates downward force on the conversion element and the seat. Upon reaching a predetermined force, the seat moves to its second position allowing the valve gate to move to its second closed position. With the valve gate in the second closed position, the convertible valve allows only unidirectional fluid flow. 1. A convertible valve comprising:a valve gate movable between a first open position and a second closed position;a seat movable between a first position and a second position, wherein said seat, in said first position, maintains said valve gate in said first open position, and wherein said seat, in said second position, allows said valve gate to move into said second closed position; anda conversion element retained in said seat, responsive to fluid flow through said convertible valve by acting upon said seat to move said seat between said first position and said second position.2. The convertible valve of claim 1 , wherein said conversion element is one of a ball and dart.3. The convertible valve of claim 1 , wherein said seat is retained in said convertible valve by at least one shear device.4. The convertible valve of claim 3 , wherein said shear device includes at least one of a screw claim 3 , ring claim 3 , and pin.5. The convertible valve of claim 1 , wherein said conversion element is retained in said seat by at least one of a pin claim 1 , ring claim 1 , snap fit ...

VALVE DEVICE FOR A HYDRAULIC CIRCUIT AND OIL PUMP CONTROL APPARATUS

A valve device for a hydraulic circuit includes an actuator unit comprising an electromagnetic circuit which comprises an armature, a core, a coil carrier, a coil, and a flux guiding device. A valve unit comprises a unit formed by a valve tappet and the armature, inlet and outlet ports, and a control port arranged between the inlet and outlet ports. A longitudinal through bore is arranged in the unit to extend from the inlet port into an actuator chamber. A first control body cooperating with a first valve seat and a second control body cooperating with a second valve seat are arranged at the unit in which the longitudinal through bore is formed. The armature and the valve tappet are loaded in an opening direction of the inlet valve by a spring element and are loadable in an opening direction of the outlet port by energizing the electromagnetic circuit. 111-. (canceled)12. A valve device for a hydraulic circuit , the valve device comprising: an armature configured to be translationally movable,', 'a core,', 'a coil carrier,', 'a coil configured to be energizable and which is arranged on the coil carrier, and', 'a flux guiding device;, 'an actuator unit comprising an electromagnetic circuit comprising,'} a unit formed by a valve tappet and the armature,', 'an outlet port,', 'an inlet port arranged so as to be spaced further from the actuator unit than the outlet port, and', 'a control port arranged between the inlet port and the outlet port;, 'a valve unit comprising,'}a first control body configured to cooperate with a first valve seat formed between the control port and the outlet port;a second control body configured to cooperate with a second valve seat formed between the control port and the inlet port;a spring element;an actuator chamber formed between the core and the armature; anda longitudinal through bore configured to extend axially, the longitudinal through bore being arranged in the unit to extend from the inlet port into the actuator chamber,wherein,the ...

Valve and Valve Arrangement

A valve includes a flow chamber, an actuating chamber, and an opening. An actuating element can close or open the valve opening. An SMA element can move the actuating element in the opening direction. The flow chamber and the actuating chamber are separated by a separating wall. A first area of the flow chamber is attachable to an air supply unit to supply air to the flow chamber. A second area of the flow chamber is attachable to a media reservoir and is connectable to atmosphere to release air from the flow chamber via an opening. An actuator is pivotable on the valve housing via a second end section, and has a first end section coupled adjacent a first end of the actuating element so that the opening to the atmosphere is either released or closed. 114-. (canceled)15. A valve comprising:a valve housing including a housing lid, a housing bottom, and an intermediate housing arranged between the housing lid and the housing bottom, the valve housing enclosing a valve chamber including a flow chamber and an actuating chamber, the valve housing defining at least one valve opening extending to the actuating chamber from the flow chamber;at least one actuating element being located in the actuating chamber and being movable between a closing position to close the valve opening and an opening position to release the valve opening, an SMA element made of a shape memory alloy being configured to operate the actuating element in the opening direction, a first end of the SMA element being connected to a valve element and a second end of the SMA element being connected to at least one of the valve housing and a base plate, the first end and the second end of the SMA element being electrically connected to a printed circuit board and a middle section of the SMA element being fixed to the actuating element, the SMA element configured with two parts extending substantially parallel to one another;the flow chamber and the actuating chamber being separated by a separating wall ...

PRESSURE RELEASE VALVE

A pressure release valve, having three or more cavities is described. The pressure release valve comprises a valve body with at least three valve cavities for fluid. The first valve cavity contains high-pressure fluid and the second cavity contains low-pressure fluid. The first, second, and third cavities are separate and apart from one another. The pressure release valve further includes a movable valve body shaft with a valve hammer and an elastic spring body. The pressure release valve further includes a channel and a valve port, wherein when pressure is applied to the movable valve body shaft, the movable valve body shaft is actuated to press against the valve hammer forcing the valve hammer to move opening the port allowing fluid to flow from the first cavity, to the second cavity and the third cavity. 1. A pressure release valve , comprising: at least three valve cavities for fluid, wherein a first cavity contains high-pressure fluid, a second cavity contains low-pressure fluid, and the first cavity, the second cavity, and a third cavity are separate and apart from one another;', 'a movable valve body shaft;', 'a valve hammer;', 'an elastic spring body;', 'a channel; and', 'a valve port;, 'a valve body includingwherein when pressure is applied to the movable valve body shaft, the movable valve body shaft is actuated to press against the valve hammer forcing the valve hammer to move opening the valve port allowing fluid to flow from the first cavity, to the second cavity and the third cavity.2. The pressure release valve of claim 1 , wherein when the high-pressure fluid flows from the first cavity claim 1 , to the third cavity claim 1 , the high pressure fluid fills the third cavity claim 1 , and pressure from the third cavity and the elastic spring body force the valve hammer rapidly closed sealing the first cavity claim 1 , the second cavity claim 1 , and the third cavity apart from one another.3. The pressure release valve of claim 1 , wherein the high- ...

Hydrostatic Equalizing Stem Check Valve

A pressure-activated device is inserted in a string for insertion into a borehole. The pressure-activated device has an indexing mechanism. The pressure-activated device has a piloted check valve that prevents the indexing mechanism from operating unless a pressure on an outside diameter of the pressure-activated device exceeds an activation threshold.

FLOW CONTROL VALVE

Flow control valves may be positioned downstream of water meters to increase pressure and compress entrained water vapour passing through the meters. However, turbulence within such valves can cause the valve's head to move radially, bending a shaft within the valve which may break. Accordingly, there is provided a flow control valve comprising: a housing having a flow passage; a valve seat defined within the flow passage; a valve head moveable to a closed position to engage the valve seat and seal the flow passage; a shaft secured to the valve head; a support slidingly mounting the shaft within the housing; a spring biasing the valve head to the closed position and configured to maintain the valve head in the closed position until a predetermined pressure is applied; and a guide assembly extending along at least a portion of the flow passage to constrain radial movement of the valve head. 1. A flow control valve comprising:a housing having an inlet, an outlet and a flow passage extending therebetween;a valve seat defined within the flow passage;a valve head positioned in the flow passage and movable between a closed position and an open position, wherein the valve head engages the valve seat in the closed position to seal the flow passage;a spring retained within the housing, the spring biasing the valve head to the closed position and configured to maintain the valve head in the closed position until a predetermined pressure is applied to the valve head from fluid at the inlet; anda guide assembly extending along at least a part of a section of the flow passage, the guide assembly configured to engage the valve head to constrain radial movement of the valve head.2. The flow control valve of claim 1 , wherein the guide assembly is configured to constrain radial movement of the valve head when moving between the closed position and the open position.3. The flow control valve of claim 1 , wherein the guide assembly extends along the entire section of the flow passage ...

MANUAL RESET ACTUATOR

A manual reset actuator is disclosed, which includes a main drain, a diaphragm release aperture fluidly coupled to a flow control valve, an upper chamber, a control port, a control orifice, an upper chamber supply orifice, and a sealing assembly, which includes a button, and a plunger. A pressure in the upper chamber exerts a downward force on the plunger. A spring exerts an upward force on the plunger. The fluid in the upper chamber is released via the control orifice, which lowers the pressure in the upper chamber, decreasing the downward force exerted on the plunger. When the downward force is less than the upward force, the spring forces the plunger upwards into an open configuration, which unseals the diaphragm release aperture. When the upward force is less than the downward force, the plunger remains in a closed configuration, which keeps the diaphragm release aperture sealed. 1. A manual reset actuator , comprising:a cover; a main drain;', 'a diaphragm release aperture selectively fluidly coupled to the main drain, wherein the diaphragm release aperture is configured to fluidly couple the manual reset actuator assembly to a flow control valve;', 'an upper chamber;', 'a control port;', 'a control orifice configured to fluidly couple the control port to the upper chamber;', 'an upper chamber supply orifice configured to supply the upper chamber with a fluid;, 'a housing, comprising;'} a button, configured to facilitate a user to actuate the sealing assembly;', 'a plunger coupled to the button and configured to selectively seal a fluid flow path between the main drain and the diaphragm chamber port;', 'a key, configured to slidably couple the button to the plunger;', 'wherein when the button is operated, the plunger prevents a fluid from exiting the main diaphragm port and a pressure of the fluid is formed in the upper chamber;', 'the pressure is configured to exert a downward force on the plunger;, 'a sealing assembly, comprising;'}a spring, configured to ...

Hydraulic valve for automobile, has check valve with band formed of closed ring, which serves as opening-free band and is made of spring steel, where steel forms ring by overlap of section of bands at about one hundred and eighty degree

The valve has a check valve with a band (9) formed of a closed ring (7), which is supported on an inner side of a central guide in a freely rotating manner. The ring is an opening-free band, which closes passage openings to the guide during drop of the setback pressure. The ring is made up of a spring steel, where the steel forms the ring by an overlap (31) of a section of the bands at about 180 degree. The passage openings are asymmetrically distributed on a section of the central guide.

Valve with check valve

The invention relates to a valve with a central guide and a check valve. The check valve and valve form an integrated component, the check valve being formed by a band which is shaped into a ring and is arranged in an internal groove.

Valve

Adjustable check valve

Water flow control device and medical injection circuit using the same

Valve, fluid device and fluid supply device

带开放功能的单向阀、具备该单向阀的软管单元及药液注入系统

提供能够使流体通常仅向单一方向流动但可根据需要而开放流路的单向阀。单向阀(250)具有：构成开设有液体的流入口(255)及流出口(261)的阀室的壳体、配置在阀室内的阀体(270)、可移动地安装于壳体且通过手动来操作的开放按钮(265)。阀体(270)具有挠性，当液体从流入口(255)侧流入阀室内时打开流入口(255)，并因液体从流出口(261)侧流入阀室内而闭塞流入口(255)。开放按钮(265)与作用部(266)形成为一体，该作用部(266)通过移动而与阀体(270)抵接并使阀体(270)变形而打开流入口(255)。

一种使用可调截止方向的电磁单向阀的锁紧回路

一种使用可调截止方向的电磁单向阀的锁紧回路，其包括油泵(210)、油箱(209)、液压缸(202)，所述液压缸(202)包括右油腔(207)和左油腔(203)，所述锁紧回路还包括可调截止方向的电磁单向阀，所述可调截止方向的电磁单向阀包括设置在所述油泵(210)和所述左油腔(203)之间油路上的第一电磁单向阀(200)以及设置在所述油箱(209)和所述右油腔(207)之间油路上的第二电磁单向阀(200’)，本发明的使用可调截止方向的电磁单向阀的锁紧回路无需额外安装控制油路，结构更为简单。

스윙 체크 밸브

내용 없음.

Plattenventil

一种滑阀型先导单向溢流阀

本发明公开了一种滑阀型先导单向溢流阀，包括主阀和先导阀，主阀包括阀套、先导阀座、复位弹簧、单向阀芯、溢流阀芯、钢丝卡簧以及螺套；先导阀包括螺套、先导阀座、锁紧螺母、调节套、调节弹簧以及先导阀芯。该种先导单向溢流阀的溢流阀芯和单向阀芯是独立的两个零件，结构简单，加工方便，工作时完全无噪音产生。

Self-locking check valve reliable in locking position

可靠锁位自锁单向阀由卸荷密封圈、限位台、浮动阀座、阀芯、锁销、锁位弹簧、限位槽、壳体、打开弹簧等组成，阀芯在第一次正向(阀芯左面)系统压力作用下克服打开弹簧力及阀芯与锁销的摩擦力开启，介质流通并向下游充填；系统反向(阀芯右面)建压克服阀座弹簧力及阀芯与锁销的摩擦力向左运动，当浮动阀座运动到阀座限位槽的极限处时，锁销在锁位弹簧力作用下下落，阀芯与浮动阀座停止运动，阀芯在阀座弹簧、打开弹簧和介质压力作用下保持密封，阀芯在第二次正向系统压力作用下，浮动阀座在阀座弹簧作用下克服正向系统压力保持密封。这样实现了单向阀一次正向建压可靠打开，二次正向建压可靠密封的问题。

A kind of backflow controlled value on car dryer

本发明提供一种用于汽车干燥器上的回流控制阀门，包括阀门主体、磁铁和环形橡胶垫B；所述阀门主体为空心圆柱状结构，且所述阀门主体内滑动连接有一个柱形密封塞，且所述阀门主体顶部螺纹连接有一个调整把手，并且所述调整把手底端与柱形密封塞转动连接。因进气管、锥形槽A、挡环和锥形槽B的设置，一方面因进气管头端开设有一个锥形槽A，此时进气管头端为汇聚式结构，故在通过连接管道进气时可降低进气管对气流的阻碍；另一方面，因挡环左端面开设有一个锥形槽B，此时挡环左侧为汇聚式结构，故可降低挡环对气流的阻挡，与现有装置相对比，本装置可保证气体流通的流畅程度，最大程度上避免对气流的阻碍，实用性和结构性更强。

Sphere center counterflow valve

本发明公开了一种球心逆流阀门，包括阀体，其特征在于，所述阀体左右两侧设有对接装置，所述阀体内左侧设有进水腔，所述阀体右侧设有出水腔，所述进水腔右端位于出水腔左端上侧，所述进水腔与出水腔间设有限位腔壁，所述限位腔壁上侧设有密封球，所述密封球上侧设有牵引装置，所述阀体上侧设有密封盖，所述密封盖通过螺栓固定在阀体上，所述密封盖上侧设有导向装置，所述导向装置内设有螺杆，所述螺杆上侧设有手柄，所述牵引装置上段与螺杆下端连接。本发明的有益效果：使用球心作为密封件，因球心的外表面光滑有弧度，受压力影响小，开启时省力、方便，且因为球心的外表面有弧度，密封件的接触面积大，密封效果好。

Sequencing valve and hydronic system

A sequencing valve and associated hydronic system are provided. The valve has first and second ports, which can be connected to a heat exchange device, and the valve is configured to selectively provide multiple fluids to the heat exchange device. For example, the valve can selectively connect hot and cold water supplies to the heat exchanger so that the heat exchanger can be used alternately to heat and cool air for a refrigeration system. The valve can include check valves that are adjusted by rotatable cams for controlling the flow of fluids into and out of the ports. Each cam can be mounted on a rotatable shaft so that the cams rotate to adjust the check valves between open and closed positions.

Sequencing valve and hydronic system

A sequencing valve and associated hydronic system are provided. The valve has first and second ports, which can be connected to a heat exchange device, and the valve is configured to selectively provide multiple fluids to the heat exchange device. For example, the valve can selectively connect hot and cold water supplies to the heat exchanger so that the heat exchanger can be used alternately to heat and cool air for a refrigeration system. The valve can include check valves that are adjusted by rotatable cams for controlling the flow of fluids into and out of the ports. Each cam can be mounted on a rotatable shaft so that the cams rotate to adjust the check valves between open and closed positions.