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.

КОМПОНОВОЧНАЯ СХЕМА ДЛЯ КОММЕРЧЕСКОГО ТРАНСПОРТА

Настоящее изобретение относится к компоновочной схеме (10; 110; 210), в частности для коммерческого транспорта, с влагоотделителем (14; 114; 214) и с блоком (16; 116; 216) регулировки, причем влагоотделитель (14; 114; 214) и блок (16; 116; 216) регулировки выполнены в виде отдельных узлов, причем влагоотделитель (14; 114; 214) имеет воздухоосушительный модуль, в частности воздухоосушительный картридж (18; 118; 218), редукционный клапан (20; 120; 220) и линию (24; 124; 224) управления для пневматического управления редукционным клапаном (20; 120; 220), причем во влагоотделителе (14; 114; 214) после воздухоосушительного модуля следует соединительный трубопровод (22; 122; 222), ведущий напрямую к потребительскому обратному клапану (30; 130; 230) для влагоотделителя (14; 114; 214), расположенному вне влагоотделителя (14; 114; 214), причем соединительный трубопровод (22; 122; 222) частично выполнен с возможностью реверсивного режима и/или с возможностью состыковки с реверсивным участком трубопровода ...

ШАР ДЛЯ ГИДРАВЛИЧЕСКОГО КОМПОНЕНТА, РЕГУЛИРУЮЩАЯ ПОТОК ВСТАВКА, СОДЕРЖАЩАЯ ТАКОЙ ШАР, И КРАН, СОДЕРЖАЩИЙ ТАКОЙ ШАР

FAUCET VALVE WITH CHECK STOP

Wasserpumpe mit Rückschlagventil

Eine Wasserpumpe mit einem Rückschlagventil (5), dessen Ventilkörper (14) in Richtung einer Ventilachse (V) zwischen einer geöffneten und einer geschlossenen Position beweglich angeordnet ist, wobei das Rückschlagventil (5) mit einer Betätigungseinrichtung (9) verbunden ist, über die es in eine Entlüftungsstellung überführbar ist, zeichnet sich erfindungsgemäß dadurch aus, dass die Betätigungseinrichtung (9) ein koaxial zu der Ventilachse (V) verschiebliches Bedienelement (11) aufweist, das am Ventilkörper (14) angreift und derart angeordnet ist, dass es den Ventilkörper (14) durch koaxiale Krafteinwirkung in die zumindest leicht geöffnete Entlüftungsstellung überführen kann. Das Bedienelement (11) ist dabei koaxial zur Ventilachse (V) verschieblich an einem Mitnehmer (13) gehalten. Es ist derart angeordnet, dass es durch Zugkrafteinwirkung auf den mit dem Ventilkörper (14) verbundenen Mitnehmer (13) den Ventilkörper (14) in die Entlüftungsstellung überführen kann. Der Mitnehmer (13) kann ...

Rückschlagventil

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

Rückschlagventilanordnung, medizinische Funktionsvorrichtung und eine Blutbehandlungsvorrichtung

Die Erfindung betrifft eine Rückschlagventilanordnung (1 0) mit einem Zulauf (205) und einem Ablauf für medizinische Fluide, mit einem Ventilkörper (101), wobei die Rückschlagventilanordnung (100) in einem Ausgangszustand ein Durchströmen eines Arbeitsfluids und/oder eines Sterilisationsfluids durch die Rückschlagventilanordnung (100) in beiden Durchströmungsrichtungen, also vom Zulauf (205) zum Ablauf und umgekehrt, zulässt, und wobei die Rückschlagventilanordnung (100) in einem Betriebszustand nur eine Durchströmungsrichtung des Arbeitsfluids zulässt, wobei die Rückschlagventilanordnung (100) eine Stift-Stiftaufnahme-Verbindung aufweist, welche derart ausgestaltet ist, dass die Rückschlagventilanordnung (100) durch Kraftaufbringung auf die Stift-Stiftaufnahme-Verbindung und/oder durch eine Wegeinprägung auf die Stift-Stiftaufnahme-Verbindung vom Ausgangszustand in den Betriebszustand überführbar ist.

Automatisches Verschlußventil für eine medizinische Infusion

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.

AN OVERRIDE CHECK VALVE

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 ...

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 ...

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. ...

A pressurised fluid cylinder

A pressurised fluid cylinder having a shut-off valve, comprising a valve element 6A on a valve stem 18A which is linearly movable. A biasing member 15A exerts a biasing force on the valve element and a crank moves the valve stem. The crank comprises a first linkage 37 pivotally attached at one end to the valve stem and a second linkage 50 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 after the top or bottom dead centre position.

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

Automatic valve

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

STOP VALVE WITH A HOLLOW VERSCHLUSSORGAN

VENTIL

VENTIL

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

ABSPERRARMATUR

HYDRAULIC LOWERINGBRAKE - NON-RETURN 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

FLUSHING VALVE

Fuel cell supply having fuel compatible materials

FLOW RATE CONTROL VALVE

Safety device for liquid aerating apparatus

MECHANICAL VALVE ASSEMBLY

A water spray nozzle assembly includes an internal channel that is sealable by an internal valve having a seat and a disc. A tilting member is operable to tilt the disc at least partially off of the seat, allowing water to flow through the internal channel. The disc may be further tilted completely off of the seat to provide additional water flow through the water spray nozzle.

FAUCET VALVE WITH CHECK STOP

FUEL CELL SUPPLY HAVING FUEL COMPATIBLE MATERIALS

The present invention is directed to a fuel cell supply for a fuel cell having an outer casing, a liner member containing methanol, and a valve component comprising a valve body member and a slidable body member disposed inside the valve body member. The slidable body member is normally biased toward a valve seat surface to seal the valve component and the slidable body member can be moved away from the valve seat surface to open the valve component. The liner member, the valve body member and the slidable body member are made from at least two different materials and wherein at least one of the members compatible with methanol. Hence, each component can be selected from material(s) that is substantially optimal for its function in the fuel supply.

METHOD FOR PROTECTING THE AIR SYSTEM IN A COMMERCIAL VEHICLE IN THE EVENT OF TRAILER BREAK-AWAY

In the event of a pneumatic trailer connection failure between a tractor and trailer of, e.g., a commercial vehicle, a pressure protection valve (PPV) is provided on the air line between a double check valve that supplies air from one or more service reservoirs and a trailer parking valve without a flow restrictor, which transmits the air to the trailer connection for supplying the trailer brakes. When output pressure on the PPV drops below a predetermined closing pressure threshold due to the connection failure, the PPV closes to protect the tractor brake air supply. Upon restoration of the trailer connection and upon input pressure at the PPV exceeding a predetermined opening pressure threshold, the PPV opens and the trailer brake system is charged more quickly than can be achieved using a conventional trailer parking valve with a flow restrictor.

FLOW CONTROL ASSEMBLY

A system includes a flow control assembly 10 having a first portion 40 configured to be positioned within and coupled to a first passageway formed in a wellhead component 16 and a second portion 80 configured to be coupled to a second passageway formed in a body 24 that is configured to be coupled to the wellhead component. An actuator 92 of the second portion is configured to drive a valve member 48 of the first portion into an open position to enable fluid flow across the flow control assembly.

A THERMAL LOAD BASED AUTOMATIC VALVE ARRANGEMENT AND METHOD

A thermal load based automatic valve arrangement including an actuator responsive to fluid temperature flowing through the arrangement, a closure member operably connected to the actuator, and a seat receptive to the closure member to prevent or restrict fluid flow through the arrangement in a first direction when actuated while still allowing fluid flow in a second direction. A method for controlling steam movement in a production string of a SAGD installation including sensing with an actuator, temperature of fluid moving through a valve arrangement, automatically adjusting the valve arrangement pursuant to thermal load on the actuator.

CONTROL VALVE AND AIR STARTING SYSTEM

A control valve and an air starting system for an engine having a pressurized air source, an air starter, and a control valve. The control valve having a housing defining a flow passage with an inlet port fluidly coupled to the pressurized air source and an outlet port fluidly coupled to the air starter, a valve body movable between an opened and closed positions to selectively open and close one of the inlet and outlet ports, resulting in a corresponding opening and closing of the control valve, and a linear motor operably coupled to the valve body to move the valve body between the opened and closed positions.

FLUID CONTROL ASSEMBLIES AND FLOW PATH INSERTS

A flow path insert for a fluid control assembly includes an upstream portion and a downstream portion integral with the upstream portion. The upstream portion includes an upstream peripheral surface and the downstream portion includes a downstream peripheral surface. The upstream portion and the downstream portion cooperate to define an inlet passage and an outlet passage in fluid communication with the inlet passage. The inlet passage defines a first axis and the outlet passage defines a second axis that is transverse to the first axis. When the flow path insert is positioned within a body of a fluid control assembly, the upstream peripheral surface is in contacting engagement with the body and the downstream peripheral surface is spaced from the body. At least the downstream portion of the flow path insert and the body cooperate to define an annular passage in fluid communication with the outlet passage. Fluid control assemblies are also disclosed.

Dispositif comprenant un robinet et un clapet de retenue.

Ventil.

Ventilaggregat, insbesondere für Heizungsanlagen

Hydraulisches Senkbrems-Sperrventil

Federbelastetes Rückschlagventil

REGULATING VALVE DEVICE FOR THE REGULATION OF A QUANTITY OF ELECTRICITY.

Pressure surge prevention valve - has truncated conical plug with shaft and end pin hooked into L-shaped slot (NO 3.1.77)

The pressure-surge protection valve is spring-loaded into the open position. It has a hooked pair of plates (16) which are linked to a pair of operating levers (22) on a manual knob spindle (10). The valve plug (8) is a truncated cone attached to an axial tube (9) containing the biasing spring. There is an L-shaped slot (18,18a) in the hooked plates (16). A pin (20) projects from the valve tube end, and is hooked by the L-slot (18a) when the valve is closed under excessive air pressure. A spring (19) pulls the curved operating lever plates (22) away from the hooked plates (16) to allow the pin (20) to slide in the slot (18) to the hooked position.

Fluid handling tap safety device - has flanged bush containing sliding guide body which is spring biased to closed position

The safety device is for a tap handling fluid, and incorporates a bush (4) with flange (5), driven into the pipe outlet boss. A guide body (6), movable in the axial direction, is accommodated in the bush and has passages (7) allowing the fluid to flow to the user, also a lug (8) at its free end. A sealing piece (9) is screwed onto the opposite end of the body, having a toroidal sealing joint (10). A coil spring (11) screws onto a smaller-diameter portion of the sealing piece, thrusting the joint against a seal machined in the bush, so as to cut off the fluid flow. The guide body can be cruciform section, the spaces between the arms of the cross forming the fluid passages.

Valve arrangement in a multipart housing, as well as pertinent valve.

Bei einer Ventilanordnung in einem mehrteiligen Gehäuse ist ein eine Schliess- bzw. Öffnungsstellung aufweisendes Ventil (20) vorgesehen, welches in einem der Gehäuseteile (11, 12) des Gehäuses montierbar und dabei geschlossen ist. Das Ventil (20) ist beim Aneinanderfügen der beiden Gehäuseteile (11, 12) von dem andern Gehäuseteil (12) in die Öffnungsstellung bringbar, und es wird damit ein abgedichteter Durchgang zwischen diesen Gehäuseteilen (11, 12) ermöglicht.

CONTROLLABLE CHECK VALVE.

Stop valve.

SHUT-OFF VALVE

Die Aufgabe der Erfindung liegt darin eine Absperrarmatur bereitzustellen, die bei einer kritischen Temperatur des durch sie strömenden Fluids zuverlässig auf passive Weise schließt, und die bevorzugt den Belastungen im nuklearen Bereich standhält. Dies wird erfindungsgemäß erreicht durch eine Absperrarmatur (2) für eine Rohrleitung mit • einem Gehäuse (4), welches einen Strömungskanal (20) umschließt, • einem in dem Strömungskanal (20) angeordneten Verschlusselement (6), welches von einer Öffnungsstellung in eine Schließstellung überführbar ist, • einem in dem Strömungskanal (20) angeordneten, aus Formgedächtnismaterial bestehenden ersten Federelement (32), welches mit dem Verschlusselement (6) wirkverbunden ist, wobei das erste Federelement (32) bei Erreichen oder Überschreiten einer Schalttemperatur (T c ) seine Form ändert und dadurch das Verschlusselement (6) in die Schließstellung bringt, wobei das erste Federelement durch einen Stapel von in Reihe geschalteten Tellerfedern gebildet ...

DEVICE DIRECT CONTROL VOLUME (UNUO) FOR ALTERNATING - LINEAR DISPLACEMENT PUMPS

SAFETY DEVICE FOR LIQUID AERATING APPARATUS

DEVICE DIRECTLY CONTROLLING VOLUME FOR PUMPS WITH RECIPROCAL MOTION

One-way valve capable of adjusting stop direction

Spike with non-return valve function and filling device for a liquid system, comprising said spike

多路阀

... 本发明涉及多路阀，其包括设置有内部腔体(3、62)的外部壳体(2)、通向所述腔体的至少一个流体输入端(4、5、6、50、51、52)以及始自所述腔体的至少一个流体输出端(10、35、36)，所述输入端(4、5、6、50、51、52)的密封装置(12、13、14、54、55、56)由设置于所述内部腔体(3、69)中并适于使所述输入端(4、5、6、50、51、52)的所述密封装置开启的致动器(16)作用。此外，所述致动器(16)的横截面小于所述内部腔体(3、49)的横截面。 ...

VALVE OF CONTROL OF FLOW, IN PARTICULAR FOR the OIL SUPPLY Of a TANK OF CRACKLING

Improvement to valve silencer

VALVE DE CONTROLE DE FLUX, NOTAMMENT POUR L'ALIMENTATION EN HUILE D'UNE CUVE DE FRITUR

LA VALVE SELON L'INVENTION COMPORTE UN SYSTEME DE CLAPETS 3, 4 ET DE SOUPAPE 6 MONTE SUR UNE TIGE COULISSANTE 8, LESQUELS CLAPETS ET SOUPAPE OBTURENT ALTERNATIVEMENT UN OU PLUSIEURS PASSAGES D'ENTREE 5 DE FLUIDE DANS UN PREMIER ETAT ET UN PASSAGE DE SORTIE 7 DU FLUIDE DANS UN SECOND ETAT. L'INVENTION EST APPLICABLE, ENTRE AUTRES, A L'ALIMENTATION D'UNE CUVE DE FRITURE EN HUILE CHAUDE SUIVIE DE L'EVACUATION DE L'HUILE REFROIDIE PAR L'ECHANGE THERMIQUE AVEC LES ALIMENTS A FRIRE, SANS MELANGE SIGNIFICATIF ENTRE LE COURANT CHAUD ET LE COURANT REFROIDI.

Shut-off valve combined with valve non-return valve

VALVE AND BOILER COMPRISING SUCH A VALVE

CONTROL VALVES

PISTON CHECK VALVE

PERFECTIONNEMENTS AUX CHALUMEAUX DITS " A MELANGE DANS LA TETE "

CHALUMEAU DIT "A MELANGE DANS LA TETE", COMPRENANT UN CIRCUIT DE GAZ COMBUSTIBLE6, 6' ET UN CIRCUIT D'OXYGENE2,2' QUI SE DIVISE, A UN EMBRANCHEMENT3, EN UN TRAJET4', 4'' POUR L'OXYGENE DE COUPE ABOUTISSANT A UNE BUSE INTERNE SOLIDAIRE DE LA TETE DE COUPE1 DU CHALUMEAU ET EN UN TRAJET 5', 5'' POUR L'OXYGENE DE CHAUFFE ABOUTISSANT A LA TETE DE COUPE PRECITEE DANS LAQUELLE CET OXYGENE SE MELANGE AVEC LE GAZ COMBUSTIBLE AMENE PAR UN TRAJET6', 6'', ET UN MANCHE MONOBLOC10 A L'INTERIEUR DUQUEL SONT REALISES LES TRAJETS2', 4', 5' ET 6' ET L'EMBRANCHEMENT3 PRECITE ET DANS LEQUEL DES ROBINETS OU DES CLAPETS7, 8, 9 SONT DISPOSES RESPECTIVEMENT SUR LES TRAJETS4', 5' ET CARACTERISE EN CE QUE: A)LES TRAJETS PRECITES COMPRENNENT A L'INTERIEUR DU MANCHE 10 UN CONDUIT 4', 5' OU 6' ET ENTRE LE MANCHE ET LA TETE DE COUPE1 UN TUBE4'', 5'' OU 6''; ET B)A L'INTERIEUR DU MANCHON10, UN SYSTEME DE SECURITE ANTI-RETOUR11 EST PLACE ENTRE LES TRAJETS5' ET 5'' DE L'OXYGENE DE CHAUFFE ET COMPREND UN SIEGE, UNE GARNITURE ...

Improvements with the valves

Hydraulic accessory comprising, in the upstream-downstream direction, and in combination, at least one isolating tap then a non-return valve

Tap including a shut-off member which combines a controlled shut-off function and an induced shut-off function

L'invention se rapporte à un robinet comportant un organe obturateur (2) qui combine une fonction d'obturation commandée, laquelle exige la mise en oeuvre d'un organe (3) de manoeuvre de l'obturateur (2) et une fonction d'obturation induite, laquelle résulte de l'action exercée sur l'obturateur (2) par un fluide qui traverse le dit robinet. Il est caractérisé en ce que, pour constituer le moyen de guidage (25) en translation: - le perçage (27) et le guide (28) sont en section dimensionnés de manière à coopéer par coulissement avec un jeu surabondant tel qu'ils soient à eux seuls incapables de garantir l'alignement de l'axe (30) de l'obturateur avec celui ( 16) de l'alésage (10) de la cloison (9) et, - l'obturateur (2) porte au moins un nez (29) de centrage dans l'alésage (10) de la cloison (9), lequel nez est d'une part de longueur et de dimension telles que ce nez assure le centrage de l'axe (30) de l'obturateur sur l'axe (16) de l'alésage, et ce quelle que soit la position de l'obturateur ...

Clapet de non retour asservissable

Il s'agit d'un clapet de non retour asservissable, avec une boite a clapet 1 dans laquelle se trouve un ensemble de clapet 16. Ce dernier presente un obturateur 17 et un ressort de fermeture 18. Un ensemble d'actionnement 13, pour commuter l'obturateur entre une position fermee et une position ouverte, se trouve au-dessus de l'ensemble de clapet 16. En dessous, une partie de fixation 2, pour la fixation du clapet, est disposee sur la boite, partie qui presente un orifice de sortie 14, et qui communique avec un canal d'ecoulement 10. Une partie de raccordement 6 munie d'une ouverture de passage 7 se trouve lateralement sur la boite 1. L'ensemble de clapet 16 est dispose au-dessus de la partie de fixation 2, entre cette derniere et l'ensemble d'actionnement 13, la partie de raccordement 6 etant lateralement sensiblement en vis-a-vis de l'ensemble de clapet 16. Le canal d'ecoulement 10 est divise en deux troncons de canal successifs 33, 34, dont l'un contient l'ensemble de clapet 16, et dont ...

VARIABLE FLOW CHECK VALVE FOR HYDRAULIC TENSIONER

ZERO-LEAK VARIABLE RATE HIGH PRESSURE METERING VALVE

A high pressure metering valve has a valve element with a closing portion, a metering portion and a rapid return portion. The closing portion seats against a corner seat at the end of a valve bore in which the metering portion has a close sliding fit. When the element is unseated, a flow rate can be metered depending on the overlapping length of the metering portion in the valve bore. At the opposite end of the metering portion, the rapid return portion is undercut to be of smaller area than the metering portion to provide a full open state for rapid fluid return.

CYLINDER PHASER VALVES

A phaser valve for a piston and cylinder assembly helps to keep a pair of pistons in phase with each other. The phaser valve includes a poppet which is slidable between opposing seats of a valve housing. The poppet includes a head and a stem, both the head and the stem having concave portions which facilitate the flow of hydraulic fluid across the valve. The poppet head has two generally conical ends, so that the head makes a fluid-tight seal with a seat when the head is urged towards either seat. Due to its construction, the phaser valve may be built to fit within a very small space, while still allowing a substantial flow of fluid when the head is not in abutment with one of the seats.

CLOSURE DEVICE WITH SELF-ALIGNING POPPET

A closure device (100) used in a fluid dispensing assembly (200). The closure device (100) contains housing (10), a poppet member (30), and a biasing member (50). The closure device (100) provides a retaining structure (26) for stabilizing and aligning the poppet member (30) and biasing member (50) within the housing (10).

Flow quantity control valve

A flow quantity control valve includes second spring holder that is fixed within housing and holds one end of valve spring which is located on a side of valve disk. The second spring holder is a roughly cylindrical member made of a material with a lower thermal conductivity than that of the housing 1 made of cast iron; and is composed of roughly circular internal bottom, stay portion that is a body portion extending from the outer periphery of the internal bottom and surrounding the valve spring, a through hole formed in a center of the internal bottom and having a larger internal diameter than the external diameter of surrounding wall constituting another through hole of the housing and flange portion radially and outwardly extending from a upper part of the stay portion and having a roughly rectangular periphery portion.

VALVE APPARATUS

PCT No. PCT/JP89/00184 Sec. 371 Date Oct. 23, 1989 Sec. 102(e) Date Oct. 23, 1989 PCT Filed Feb. 23, 1989 PCT Pub. No. WO89/08213 PCT Pub. Date Sep. 8, 1989.A hydraulic actuator is driven by hydraulic fluid discharged from a hydraulic pump, for controlling driving of the actuator. A valve has a meter-in circuit for introducing the hydraulic fluid discharged from the hydraulic pump into the actuator. The valve also has a meter-out circuit for returning fluid from the actuator, into a tank. The meter-out circuit is provided with a main valve for controlling the return fluid from the actuator, and a pilot circuit including a variable restrictor. When the main valve is closed, the pilot circuit is closed, and when the main valve is open, its degree of opening varies depending upon an amount of restriction of the variable restrictor. A controller varies the amount of restriction of the variable restrictor valve in accordance with the driving pressure of the actuator.

REVERSE FLOW RELIEF VALVE FOR A FUEL CELL SYSTEM

A method of shutting down operation of a fuel cell system is disclosed, comprising a fuel cell stack, the method comprising the sequential steps of: i) ceasing a supply of fuel to the fuel cell stack; ii) closing a shut-off valve on an exhaust line in fluid communication with a cathode system of the fuel cell system, the cathode system comprising a cathode fluid flow path passing through the fuel cell stack; iii) pressurizing the cathode system with an air compressor in fluid communication with a cathode air net port in the fuel cell stack; and iv) ejecting water from the cathode flow path.

Zero leakage valve

A valve having dual seats and dual poppets operating in series to function as either a conventional check valve, or may be operated by an independent piston which may be styled to either combine or eliminate the check valve feature. One seat poppet combination employes a metal-to-metal seal. The other seat poppet combination utilizes a resilient o-ring seal vented so that when the seal is raised from the bottom of its groove, the upstream and downstream sides of the soft seat poppet can communicate. Alternative embodiments provide a family of zero leakage valves for different purposes, e.g. a check valve, pilot operated check valve, and an in line or balanced relief valve with or without the check valve feature by employing generally the same elements with modifications.

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 ...

High flow service connection valve

A service connection valve that is configured for use on air conditioning and refrigeration units. The valve includes a pin guide that is separate from the poppet assembly and installed in the valve body prior to installation of the poppet assembly. In addition, the pin guide can be disposed in a large diameter flow passageway of the valve body. Further, the poppet assembly includes a seal that expands in diameter upon installing the poppet assembly into the valve body. The service connection valve provides high flow rates during charging and evacuation operations.

METHOD OF OPERATING A VEHICLE

A method of operating a vehicle includes navigating the vehicle along a path, collecting a set of navigation parameters of the vehicle from at least one of a sensor, a global positioning system, or an inertial reference system, determining a set of statistical uncertainties related to at least some navigation parameters in the set of navigation parameters, and associating a set of statistical weights to the at least some navigation parameters.

IMPROVED COMBINATION VALVE

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

ОТПИРАЕМЫЙ ОБРАТНЫЙ КЛАПАН

Изобретение относится к гидроприводам и предназначено для управления механизированной крепью и для ее гидравлической защиты в подземных горных выработках. В отпираемом обратном клапане сообщение между нагрузочной камерой (38) и соединительной камерой (34) прерывается поршнем (35) обратного клапана и открывается путем перемещения нагружаемого управляющим давлением поршня (26). Поршень (35) обратного клапана, разгрузочный поршень (19) и поршень (26) с управляющим штоком расположены концентрично друг другу относительно общей для них оси клапана. Управляющий шток (32) проходит через поршень (35) обратного клапана с возможностью скользящего перемещения в нем и с обеспечением уплотнения в сопряжении с ним и для открытия подхватывает днище поршня посредством кольцевого уступа. Поршень (35) обратного клапана нагружен в направлении закрытия усилием собственной замыкающей пружины. Разгрузочный поршень (19) установлен на оси клапана с возможностью независимого от обратного клапана направленного перемещения ...

Fluid handling system

A fluid handling system includes a valve assembly within a needle that is movable from a closed state to an open state against a bias while engaging and moving a valve stem of a fluid supply from a closed state to an open state.

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. ...

VALVE FOR INFLATABLE OBJECTS

A self-sealing valve comprises a valve housing having a fluid conduit, a valve seat, a diaphragm and an attachment member. The valve housing is configured to pass fluid through the fluid conduit. The diaphragm provides a seal of the fluid conduit. The attachment member is configured to attach portion of the diaphragm to the valve housing. The attachment member and diaphragm are configured to position the flexible diaphragm against the valve seat to seal the fluid conduit in a closed position of the self-sealing valve, and to facilitate pivotal movement of the diaphragm under a bias in a first direction away from the valve seat to an open position. 1. A self-sealing valve comprising a valve housing having a fluid conduit , a valve seat , an attachment member , and a flexible diaphragm;the valve housing being configured to pass fluid through the fluid conduit; andthe flexible diaphragm having a periphery that engages against the valve seat in a closed position and that provides a seal of the fluid conduit in the closed position;wherein the attachment member secures a part of the flexible diaphragm to the valve housing;wherein the attachment member and the flexible diaphragm are configured to position the flexible diaphragm against the valve seat so that the flexible diaphragm forms the seal of the fluid conduit in the closed position, and so that the flexible diaphragm moves at least the portion of the periphery of the diaphragm in a first direction away from the valve seat to an open position under a fluid bias against a second side of the diaphragm;wherein the valve housing, the attachment member, and the flexible diaphragm are arranged so that a part of the flexible diaphragm can be contacted to allow for movement of at least the part of the periphery of the flexible diaphragm in the first direction so as to purge the self-sealing valve; andwherein the attachment member and the flexible diaphragm are arranged to provide for pivotal movement of the at least a part ...

Pneumatic lift with unidirectional valve

A pneumatic lift including inflatable mattresses stacked one atop another and arranged in air flow communication with one another, but with each being independently deflatable. 1. A unidirectional valve arranged in air flow communication between each of a first inflatable mattress and a second inflatable , said unidirectional valve comprising:a first housing configured to be sealingly located in a panel of a first inflatable mattress, said first housing having at least one opening in air flow communication with an interior of said first inflatable mattress and a conduit communicating between an interior portion of said first housing and an external ambient environment;a second housing configured to be sealingly located in a panel of a second inflatable mattress so as to be in mating relationship with said first housing, said second housing having at least one opening communicating with an interior of said second inflatable mattress; anda resilient diaphragm captured by said first housing so as to isolate said conduit from said interiors of said inflatable mattresses thereby maintaining said interior portion of said first housing at an ambient external pressure during inflation and deflation of said first and second inflatable mattresses.2. A unidirectional valve according to wherein said resilient diaphragm is outwardly biased.3. A unidirectional valve according to wherein said resilient diaphragm is outwardly biased by a spring located within said interior portion of said first housing.4. A unidirectional valve according to wherein said first housing includes a central pier having an intermittent free edge claim 1 , a downwardly projecting annular wall claim 1 , and two spaced apart claim 1 , coaxially arranged annular rings that project downwardly from an under surface of said central pier.5. A unidirectional valve according to wherein said annular rings are arranged in coaxial relation to said downwardly projecting annular wall and said central pier structurally ...

Electric Motor Actuated Stop and Self-Closing Check Valve

An electric motor actuated stop/check valve for industrial use such as liquid pumping systems which has a controlled opening and closing rate when liquid flow is in a forward direction but closes quickly upon reverse flow of liquid with no action from the electric motor actuator. Actuation of the valve is by an electric motor which provides movement to an actuator rod which contacts the disc stem. The disc stem and the actuator rod are not connected which allows the valve disc and disc stem free movement. No action by the electric motor is required. A spring biasing the valve disc toward the closed position and a hydraulically operated valve closing-speed regulator reduces or eliminates slamming of the valve disc against the valve seat. In a preferred method of operation liquid surge pressure transients are reduced or eliminated and slamming of valve components is prevented.

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 ...

Dosage Valve and Relative Method

A dosage valve for a fluid product, for example a colorant, comprising an at least partly elastic or elastomer element, having at least a cut in the central part so as to define at least two closed/open cooperating lips, which comprises a sensor element associated with the at least partly elastic element in order to detect at least a closed or open condition of the lips.

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 ...

Seat-type Air Extracting Suction Apparatus to Aid Bowel Movement

Disclosed is a seat-type air-extracting suction apparatus to aid bowel movement having a main body (), a support frame (), a vacuum motor () and a pressure regulation valve (), wherein the main body () is provided with a loading housing (), a seat cushion () and an extraction box (), the loading housing () has a first through hole (), the seat cushion () is provided on the loading housing () and is formed with a guidance hole (), the guidance hole () is aligned with the first through hole () of the loading housing (), the extraction box () penetrates through and is provided in the loading housing (), and an internal space of the extraction box () corresponds to the first through hole (). The support frame () is provided on the outside of the main body () and is provided with a starting switch (). The vacuum motor () is connected to the main body () and is used for extracting air to reduce the pressure inside the loading housing (), a negative pressure effect being created when extracting air via the vacuum motor (), aiding the bowel movement of a user. The pressure regulation valve () is able to adjust the pressure inside the loading housing () to meet the comfort level of the user. 1. A seat-type air extracting suction apparatus to aid bowel movement comprising: a loading housing being rectangular and having a first through hole defined through the loading housing;', 'a seat cushion mounted on the loading housing and having a guiding hole formed on the seat cushion and aligned with the first through hole; and', 'an extraction box mounted through the loading housing into an internal space of the loading housing and having a receiving space aligned with the first through hole;, 'a main body having'}a support frame connected to an outside of the main body and having an activating switch;a vacuum motor connected to the main body and having an air pipe mounted airtightly through a wall of the loading housing, wherein one of two open ends of the air pipe is connected to ...

REFRIGERATION SYSTEM AND BALL VALVE THEREOF

A ball valve includes a valve body, the valve body has a valve cavity, a first connecting port and a second connecting port; a valve rod and a valve ball are provided inside the valve cavity, the valve ball is provided with a valve ball passage, the valve rod is configured to drive the valve ball to rotate to allow or disconnect a communication between the first connecting port and the second connecting port via the valve ball passage; wherein, a one-way valve having a preset opening pressure is provided between the valve ball passage and the first connecting port, and in a case that the valve ball disconnects the communication between the first connecting port and the second connecting port, the one-way valve is configured to allow a one-way communication from the valve ball passage to the first connecting port. 1. A ball valve , comprising a valve body , the valve body having a valve cavity , a first connecting port and a second connecting port; a valve rod and a valve ball being provided inside the valve cavity , the valve ball being provided with a valve ball passage , the valve rod being configured to drive the valve ball to rotate to allow or disconnect a communication between the first connecting port and the second connecting port via the valve ball passage; wherein ,a one-way valve having a preset opening pressure is provided between the valve ball passage and the first connecting port, and in a case that the valve ball disconnects the communication between the first connecting port and the second connecting port, the one-way valve is configured to allow a one-way communication from the valve ball passage to the first connecting port.2. The ball valve according to claim 1 , wherein the one-way valve is provided on a spherical wall of the valve ball.3. The ball valve according to claim 2 , wherein the spherical wall of the valve ball is provided with a mounting hole for mounting the one-way valve claim 2 , an inner side of the mounting hole is provided with ...

Valve Device Capable of Maintaining Safe Pressure of Pressure Vessel

A valve device comprises a body, a rotating valve set and a safety valve set. The body comprises an inner space, a first opening and a second opening. When the rotating valve set is located in a water-providing position, the inner space, the first opening and the second opening are communicable. When water pressure is higher than a safe pressure, the safety valve set and the rotating valve set can block the first opening and the second opening that safe pressure is maintained at the second opening. When water pressure becomes normal, the safety valve set is moved to its original position. Therefore, it has a piston-typed safety valve set is highly reliable. It has a coaxial structure to reduce its volume. It has an engaging and hooking structure for precise and easy assembly. It has an opening and/or closing function for its valve body with wide range of applications. 1. A valve device capable of maintaining safe pressure of a pressure vessel , comprising: an inner space;', 'a first opening spatially communicable with the inner space and having a first inner wall surface and a virtual axis defined to extend through a center of the first opening;', 'a second opening spatially communicable with the internal space and the first opening, and intersecting the first opening;, 'a body comprising a rotating part being watertightly disposed and inserted in the body, and being coaxial with the first opening along the virtual axis, the rotating part extending into the inner space and rotating along the virtual axis in the inner space relatively to the body between a water-providing position and a water-stopping position;', 'a pivot connecting part located at the rotating part and being coaxial with the first opening along the virtual axis;', 'a water hole disposed at a radial position of the rotating valve set and extending radially through the rotating valve set corresponding to the second opening, and being mutually watertight from the inner space, the water hole and the ...

Three position check valves for use with vacuum jammed film envelopes

The present disclosure relates to a three-function check valve that in one embodiment is attached to a vacuum bladder full of media (foam beads). This three-function check valve is comprised of a selection piece, silicone membrane, and a mounting base all in one sub-assembly. Furthermore, this valve has three positions with three distinct functions. These functions are to create an airtight seal, allow for free flow in and out of the bladder, and restrict flow of air based on a differential pressure. 1. A check valve device comprising:a selection piece, a flexible membrane, and a mounting base, wherein the mounting base includes projections to prevent the internal jamming media from blocking the flow of air or other fluid through the check valve device, wherein the base defines a plurality of small holes and at least one larger hole in the center of the base, wherein the base also defines a plurality of semicircle grooves running the height of the wall of the base, wherein the base includes circular ridge,wherein the selection piece defines a plurality of detent positions of a stepped track, the plurality of detent positions of the stepped track configured to engage circular ridge to lock selection piece into three different positions relative to the base, wherein twisting the selection piece causes the circular ridge of the base to move within the stepped track, where the selection piece translates relative to the base until the circular ridge engages at least one of the plurality of detent positions,wherein the flexible membrane includes a wide, thin circular piece, a smaller cylindrical piece centered on the thin circular piece, and a short, trapezoidal top, wherein the smaller cylindrical piece is sized to fit within the center hole, wherein the wide, thin circular piece functions to aid in creating an airtight seal when the check valve device is in one of the three different positions.2. The check valve device of wherein the check valve device provides three ...

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 ...

VALVES AND TUBES INCLUDING VALVES

An inflation valve () for a sealing cuff () on a tracheal tube () has a helical ceramic spring () that urges a valve seal () against a valve seat (). The actuator () by which the seal () is lifted from the seat to open the valve includes a spring latch mechanism (). The latch mechanism has three spring fingers () that are held resiliently in compression in a recess () before the first actuation of the valve. When first used, the actuator is moved forwardly to open the valve so that the free ends of the spring fingers clear the end of the recess and deflect outwardly. When the actuator () is released to allow the valve to close, the spring fingers () engage a latch surface () so that the spring () is held in greater tension. 19-. (canceled)10. A valve including an outer housing , a valve seat , a valve seal displaceable along the housing into or out of sealing engagement with the valve seat , a resilient member arranged to urge the seal into engagement with the seat and an actuator arrangement extending from the valve seal to an opening of the housing , characterised in that the actuator arrangement includes a latch member and is displaceable forwardly from an initial position before use where it is out of engagement with a latch surface on the housing to a second position where the latch member engages the latch surface and prevents movement of the actuator arrangement rearwardly beyond the latched position , that the actuator arrangement is displaceable forwardly from the latched position to displace the seal away from the seat and allow flow through the housing , and that the actuator arrangement , when released , allows the seal to be displaced by the action of the resilient member to return to engagement with the seat and prevent flow along the valve.11. A valve according to claim 10 , characterised in that the latch member includes an outwardly displaceable spring element that is held inwardly in the initial position by engagement with an external surface ...

FLOW CONTROL ASSEMBLY

A system includes a flow control assembly having a first portion configured to be positioned within and coupled to a first passageway formed in a wellhead component and a second portion configured to be coupled to a second passageway formed in a body that is configured to be coupled to the wellhead component. An actuator of the second portion is configured to drive a valve member of the first portion into an open position to enable fluid flow across the flow control assembly. 1. A system , comprising: a first portion configured to be positioned within and to be coupled to a first passageway formed in a wellhead component; and', 'a second portion configured to be coupled to a second passageway formed in a body that is configured to be coupled to the wellhead component;', 'wherein an actuator of the second portion is configured to drive a valve member of the first portion into an open position to enable fluid flow across the flow control assembly., 'a flow control assembly, comprising2. The system of claim 1 , wherein the valve member is configured to automatically return to a closed position to block fluid flow across the flow control assembly if the body separates from the wellhead component.3. The system of claim 1 , wherein the first portion comprises an annular plug body that is configured to be threadably coupled to the first passageway formed in the wellhead component claim 1 , and the annular plug body defines a cavity that houses the valve member.4. The system of claim 3 , comprising a biasing member positioned within the cavity claim 3 , wherein the biasing member is configured to bias the valve member toward a closed position in which the valve member blocks fluid flow across the flow control assembly.5. The system of claim 1 , wherein the second portion comprises an annular energizing plug body that is configured to be threadably coupled to the second passageway formed in the body claim 1 , and the annular energizing plug body defines a cavity that houses ...

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 ...

ROCKER ARM ASSEMBLY

A combined exhaust and engine brake rocker arm assembly configured to selectively open first and second exhaust valves, includes a rocker arm body, an exhaust rocker arm assembly formed in the rocker arm body, and an engine brake rocker arm assembly formed in the rocker arm body and configured to operate in a collapse mode and a rigid mode. The exhaust rocker arm assembly is configured to selectively engage a valve bridge to open the first and second exhaust valves, and the engine brake rocker arm assembly is configured to selectively engage the valve bridge to open only the first exhaust valve. 111-. (canceled)12. The valve train assembly of claim 18 , wherein the exhaust rocker arm assembly comprises an exhaust capsule assembly disposed in a bore formed in the rocker arm body claim 18 ,wherein the exhaust capsule assembly comprises a plunger assembly and a stopper, the plunger assembly including a first plunger body and a second plunger body, wherein a chamber is defined between the first and second plunger bodies configured to receive a supply of fluid.13. The valve train assembly of claim 12 , wherein the stopper includes an annular bore formed therein claim 12 , and a lost motion biasing mechanism is at least partially disposed in the annular bore claim 12 , the lost motion biasing mechanism configured to bias the stopper and the plunger assembly away from an upper wall of the bore.14. The valve train assembly of claim 13 , wherein the stopper includes an annular groove formed therein claim 13 , the annular groove configured to selectively align with a fluid port fluidly coupled to the engine brake rocker arm assembly.15. The valve train assembly of claim 18 , wherein the engine brake rocker arm assembly comprises a brake capsule assembly disposed in a bore formed in the rocker arm claim 18 ,wherein the bore comprises a first bore and a second bore formed in the rocker arm, the brake capsule assembly comprising a brake plunger assembly disposed in the first ...

Valve device and shock absorber

Provided is a valve device and a shock absorber that can prevent them from being in a failure state at the normal time and can freely set a passive valve even when both pressure control and passage opening/closing are performed by a solenoid valve. For this reason, the valve device includes a first passage and a second passage connected downstream of the pressure introducing passage, a solenoid valve that opens the first passage to control the upstream pressure and closes the second passage when energized, and that closes the first passage and opens the second passage when not energized, and a passive valve provided downstream of the solenoid valve in the second passage.

BACKWATER VALVE WITH CONTROL LINKAGE

A backwater valve has a valve body, and a valve member pivotally movable about a pivot axis between an open position away from the valve body and a closed position covering the valve body. A control linkage is provided with at least one of a float or a counterweight in communication with the valve member via the control linkage to modify operation of the valve member. 1. A backwater valve , comprising:a hollow valve body having an inlet and an outlet; a counterweight in communication with the valve member that biases the valve member toward a normally open position above the inlet, the counterweight moving toward a top of the hollow valve body as the valve member moves toward the closed position; and', 'a float in communication with the valve member that closes the valve member in the presence of water, the float moving toward a top of the hollow valve body as the valve member moves toward the closed position., 'a valve member pivotally movable about a pivot axis between an open position in which the valve member is away from the inlet and a closed position in which the valve member directly engages and covers the inlet to prevent fluid flow through the inlet, the pivot axis being disposed above the inlet;'}2. The backwater valve of claim 1 , further comprising a control linkage that is movable about the pivot axis and positioned opposite the valve member relative to the pivot axis.3. The backwater valve of claim 2 , wherein the control linkage is connected to the valve member.4. The backwater valve of claim 3 , wherein claim 3 , in the absence of water claim 3 , the float is spaced below the control linkage claim 3 , and in the presence of water claim 3 , the float is raised to engage the control linkage and close the valve member.5. The backwater valve of claim 3 , wherein the counterweight communicates with the valve member via the control linkage.6. The backwater valve of claim 5 , wherein the control linkage further comprises a pivotal connection between a ...

DOUBLE FLAPPER VALVE FOR A VARIABLE CAM TIMING SYSTEM

An inlet check valve for controlling fluid from a supply into a variable cam timing phaser includes a double flapper check valve assembly with an open position and a closed position, which includes a housing having a body, at least one stopper, a flapper valve comprising at least two flexible flaps received within the housing and aligned with the stopper(s), and a valve seat received within the housing, the valve seat defining openings aligned with the at least two flexible flaps, axially opposite the two stoppers. 1. A check valve for controlling fluid within or into a variable cam timing phaser , comprising: a housing having a body forming at least one stopper;', 'a flapper valve comprising at least two flexible flaps received within the housing and aligned with the stopper(s); and', 'a valve seat received within the housing, the valve seat defining openings aligned with the at least two flexible flaps, axially opposite the stopper(s);', 'wherein when fluid flows through the openings of the valve seat, the fluid pushes the at least two flaps away from the valve seat and towards the stopper(s), permitting the flow of fluid into the variable cam timing phaser; and', 'wherein when fluid flows from the body onto the at least two flaps, the fluid pushes the at least two flaps towards the valve seat, sealing the openings of the valve seat and preventing fluid from entering the supply., 'a double flapper check valve assembly with an open position and a closed position, the double flapper check valve comprising2. The check valve of claim 1 , wherein the stopper(s) is/are shaped to limit the movement of the at least two flexible flaps.3. The check valve of claim 1 , the housing further comprising a lip defining a protrusion for securing the valve seat and flapper valve to the housing.4. The check valve of claim 1 , wherein the housing is manufactured by an overmolding process.5. The check valve of claim 1 , wherein the double flapper check valve assembly further comprises ...

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 ...

Fluid valve for a vehicle transmission

A fluid valve, in particular a pressure control valve in a vehicle transmission, has at least one inlet opening and a first and a second outlet opening, which are connected to each other through two part valves that are mechanically coupled to each other. Whereas, by means of the first part valve, a fluid intake is adjustable from the inlet opening to the first and second outlet opening, and, by means of the second part valve, a fluid discharge is adjustable between the first and second outlet opening. At least the second part valve is designed as a poppet valve, with a cone-shaped closing element that features several taper areas, which have varying taper angles.

PRESSURE CONTROL VALVE

The invention relates to a pressure control valve, composed of a valve component and a drive component for the control element of the valve component; the valve component has an orifice that is closed by the control element in a first position, thus disconnecting a control chamber from a return chamber and during operation, a control pressure prevails in the control chamber that is greater than or equal to the return pressure in the return chamber, and in the first position, the control pressure acts on a first control surface of the control element and in a second, controlled position, the orifice is partially opened so that the control chamber and the return chamber are fluidically connected to each other and the control pressure prevailing in the control chamber in the second position acts on a second control surface of the control element and the second control surface is larger than the first control surface. 1. A pressure control valve , comprising:a valve component having a control element; anda drive component for the control element of the valve component;the valve component having an orifice that is closed by the control element in a first position, thus disconnecting a control chamber from a return chamber;wherein during operation, a control pressure prevails in the control chamber that is greater than or equal to a return pressure in the return chamber, and in the first position, the control pressure acts on a first control surface of the control element and in a second, controlled position, the orifice is partially opened so that the control chamber and the return chamber are fluidly connected and the control pressure prevailing in the control chamber in the second position acts on a second control surface of the control element, andwherein the second control surface is larger than the first control surface.2. The pressure control valve of claim 1 , wherein claim 1 , depending on the position of the drive component and the control element operatively ...

PRESSURE CONTROL VALVE WITH CONTROL ELEMENT

The invention relates to a pressure control valve, composed of at least a valve component; situated between a control chamber and a return chamber, the valve component has an orifice, which a control element can close, partially close, or open, and the control element has at least one, at least truncated cone-like first control element region with a truncated cone angle and the orifice is formed by a through opening, which extends through the orifice element and at its end oriented toward the control element, has at least one cone-like, in particular first, orifice region with a cone angle; and the cone angle is greater than the truncated cone angle. 1. A pressure control valve comprising:at least one valve component situated between a control chamber and a return chamber, the valve component having an orifice, which a control element can at least one of close, partially close, or open,wherein the control element includes at least one, at least truncated cone-like first control element region with a truncated cone angle (α); andwherein the orifice is formed by a through opening, which extends through an orifice element, and, at an end oriented toward the control element, the orifice has at least one cone-like first orifice region with a cone angle (β); andwherein the cone angle (β) is greater than the truncated cone angle (α).2. The pressure control valve according to claim 1 , wherein claim 1 , in a partially open position of the valve claim 1 , a second control element region is provided on the control element claim 1 , which is adapted to cooperate with a second orifice region to form a second control surface claim 1 ,whereas, in a closed position of the valve, at least a part of the first control element region is adapted to cooperate with at least a part of the first orifice region to form a first control surface.3. The pressure control valve according to claim 1 , wherein the first orifice region has a plurality of cone-like orifice region sections claim 1 , ...

Valve Assembly for a Fuel Tank

A valve assembly for a fuel tank includes a housing with a tank connection and a filter connection to respectively connect the valve assembly to the fuel tank and to an active carbon filter. The tank connection and the filter connection are or can be fluidically connected through a vent duct. A main vent valve with a valve element in the vent duct closes the vent duct in a closing position and opens it in a releasing position. A pilot valve to open the main vent valve is or can be fluidically connected to a pressure chamber of the main vent valve or to an overflow area. The overflow area fluidically connects or can fluidically connect the tank connection or a tank-side vent duct and the filter connection or a filter-side vent duct. Three check valves are also included.

FLUID CONTROL ASSEMBLIES AND FLOW PATH INSERTS

A flow path insert for a fluid control assembly includes an upstream portion and a downstream portion integral with the upstream portion. The upstream portion includes an upstream peripheral surface and the downstream portion includes a downstream peripheral surface. The upstream portion and the downstream portion cooperate to define an inlet passage and an outlet passage in fluid communication with the inlet passage. The inlet passage defines a first axis and the outlet passage defines a second axis that is transverse to the first axis. When the flow path insert is positioned within a body of a fluid control assembly, the upstream peripheral surface is in contacting engagement with the body and the downstream peripheral surface is spaced from the body. At least the downstream portion of the flow path insert and the body cooperate to define an annular passage in fluid communication with the outlet passage. Fluid control assemblies are also disclosed. 1. A flow path insert for a fluid control assembly , the flow path insert comprising:an upstream portion and a downstream portion integral with the upstream portion, the upstream portion comprising an upstream end surface and an upstream peripheral surface, the downstream portion comprising a downstream end surface and a downstream peripheral surface; whereinthe upstream peripheral surface has a first diameter and the downstream peripheral surface has a second diameter, the first diameter being greater than the second diameter;the upstream portion and the downstream portion cooperate to define an inlet passage and an outlet passage in fluid communication with the inlet passage, the outlet passage extending through the downstream peripheral surface;the inlet passage defines a first axis and the outlet passage defines a second axis, the second axis being transverse to the first axis; andwhen the flow path insert is positioned within a body of a fluid control assembly, the upstream peripheral surface is in contacting ...

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 ...

Rapid Dome Loading Pilot Valve Bypass

A flow arrangement for a pressure relief valve assembly can include a bypass flow path extending from a pressure source to a dome of a relief valve. The bypass flow path can include a valve that is configured to open and close the bypass flow path based on pressure at the pressure source or the dome, or a pressure difference between the pressure source and the dome.

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. 1. A valve assembly to control a flow of a fluid through a valve mechanism , comprising:an inlet having an opening to allow the fluid to pass; a valve cup having an outer wall extending from a base wall;', 'a first stop wall extending from a base surface of the base wall and interior to an internal surface of the outer wall;', 'an axle extending from the base surface;', 'a rotor having (i) a throughbore configured to pass over the axle and allow the rotor to rotate relative to the base surface and (ii) an outer surface having at least (a) a first region and (b) a second region, wherein the first region has a first radius and the second region has a second radius different from the first radius;', 'a valve member;', 'a valve biasing assembly having a first portion and a second portion;', 'a valve seat formed in a portion of the outer wall;', 'wherein the valve member is positioned at the valve seat and biased into a closed position with the valve biasing assembly,', 'wherein the valve biasing assembly is engaged by the exterior surface of the rotor to apply a selected force to the valve member; and, 'the valve mechanism includingan outlet to allow the fluid to flow away from the valve mechanism.2. The assembly of claim 1 , further comprising:a reservoir enclosing a volume between the inlet and the valve mechanism.3. The assembly of claim 1 , wherein the axle is spaced away from the first stop wall.4. The assembly of claim 1 , wherein the valve biasing assembly includes:a spring member; anda separate follower member,wherein the valve member is biased into the closed position with the spring member and the follower member,wherein the follower member ...

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 ...

ELECTRONICALLY CONTROLLED PRESSURE RELIEF VALVE

A pressure relief comprises a valve body which includes an inlet bore that is connectable to a flow line, an outlet bore that is connectable to a vent line and a valve bore that extends to between the inlet and outlet bores. A valve member is slidably supported in the valve bore and is moveable between a closed position in which the fluid in the flow line is prevented from flowing from the inlet bore to the outlet bore and an open position in which the fluid in the flow line is permitted to flow from the inlet bore to the outlet bore. A solenoid operated pilot valve is connected to the valve body over the valve bore, and a fluid chamber is located in the pilot valve above the valve member. The fluid chamber is filled with a hydraulic fluid, and the hydraulic fluid in the fluid chamber is operatively engaged with the valve member. In a closed position of the pilot valve the hydraulic fluid is trapped in the fluid chamber to thereby prevent the valve member from moving from its closed position to its open position, and in an open position of the pilot valve the hydraulic fluid is released from the fluid chamber to thereby allow the valve member to move from its dosed position to its open position. 1. A pressure relief valve which operates to control the flow of fluid from a flow line to a vent line when the pressure of the fluid in the flow line reaches a predefined maximum pressure , the pressure relief valve comprising:a valve body which includes an inlet bore that is connectable to the flow line, an outlet bore that is connectable to the vent line and a valve bore that extends to between the inlet and outlet bores;a valve member which is slidably supported in the valve bore and is moveable between a closed position in which the fluid in the flow line is prevented from flowing from the inlet bore to the outlet bore and an open position in which the fluid in the flow line is permitted to flow from the inlet bore to the outlet bore;a solenoid operated pilot 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; ...

Method for operating a hydraulic consumer on an electrically actuated control valve

A method for operating a hydraulic consumer on an electrically actuated control valve includes providing the valve with an open valve position for establishing a connection between a valve inlet and a pilot line for influencing a pivot angle set on an axial piston pump and a system pressure which is present at the valve inlet and dependent on the pivot angle. Data regarding the current system pressure and the current pivot angle are detected and communicated to a control unit. The method includes determining an incorrect setting of the control valve if the control unit detects that a delivery volume flow of the axial piston pump is smaller than a value to be expected based on valve position, or the control unit detects that the system pressure present at the valve inlet is at a maximum without a delivery volume flow flowing in the direction of the hydraulic consumer. 1. A method for operating a hydraulic consumer on an electrically actuated control valve , comprising:providing the control valve with an open valve position for establishing a connection between a valve inlet and a pilot line connected to a control connection for influencing a pivot angle which is set on an axial piston pump and provides a system pressure which is present at the valve inlet and is dependent on the pivot angle;detecting data by one or more sensors with respect to the current system pressure and the current pivot angle of the axial piston pump;communicating the data to a control unit;determining when the hydraulic consumer is connected;determining an incorrect setting of the control valve if the control unit detects that a delivery volume flow of the axial piston pump resulting from the current pivot angle is smaller than a value to be expected on the basis of the valve position of the control valve; anddetermining an incorrect setting of the system pressure if the control unit detects that the system pressure present at the valve inlet is at a maximum without a delivery volume flow ...

Spike with non-return valve function and filling device of a liquid system with spike

Disclosed is an anti-contamination device for preventing contamination of a fluid stored in a fluid container with a spike and a manually operable fluid blocking mechanism arranged directly downstream of the spike. A non-return valve is arranged between the spike and the fluid blocking mechanism, and that valve is adapted to allow only a flow from the spike in the direction of the manually operable fluid blocking mechanism.

AUTOMATIC SHUTOFF VALVE FOR A PIPELINE

A valve in a pipeline is automatically configured to close the flow through the pipeline in the event of a pipeline rupture or similar event. During normal flow, a valve element is maintained in an open position. However, in the event of a rupture, the resulting pressure drop across the valve is sensed and causes the valve element to move to a closed position. 1. An automatic shutoff valve for a pipeline comprising:a) a housing having an inlet and an outlet;b) a valve closure element positioned within the housing,c) a valve stem connected at a first position to the valve closure element and connected at a second portion to a piston located within a fluid chamber;d) means for communicating an inlet pressure of the valve to a first side of the piston and for communicating an outlet pressure of the valve to a second side of the piston, ande) means for maintaining the valve closure element in an open position during normal operation of the valve.2. A valve as claimed in wherein the means for maintaining the valve closure element in an open position includes one or more weights connected to the valve stem.3. A valve as claimed in wherein the means for communicating an inlet pressure to a first side of the piston includes a port in the pipeline upstream of the inlet and a conduit extending between the port and the fluid chamber.4. A valve as claimed in wherein the means for communication an outlet pressure to a second side of the piston includes a second port in the pipeline downstream of the outlet and a conduit extending between the second port and the fluid chamber.5. A valve as claimed in wherein the valve closure element is a flapper valve.6. A valve as claimed in wherein the valve closure element is a gate valve.7. A valve as claimed in wherein the housing includes an internal flow path having a roughened portion to increase the pressure drop across the valve.8. A valve as claimed in wherein the means for maintaining the valve closure element in an open position ...

Canister valve device for vehicle

A canister valve device for a vehicle that is equipped with a shutoff valve device connected to a pipe providing a passage for air to flow to a canister and selectively opening and closing the passage of the pipe, may include a diverging channel diverging from the passage of the pipe to a position where the shutoff valve device is positioned to provide a passage for a portion of air flowing to the pipe; and a check valve device positioned in the diverging channel, closing when the shutoff valve device closes, and opening when the shutoff valve device opens so that air is distributed to the pipe and the diverging channel, whereby negative pressure applied to the shutoff valve device is configured to be reduced by flow of the air.

Check Valve

Technologies are described herein for a check valve. The check valve can be operated using a lever and bellows system or an external magnet. External magnets external to the check valve move from a first position to open the check valve to a second position to close the check valve through the interaction of the magnetic fields of the external magnets and the internal magnet. 1. A valve , comprising:a lever internal to the valve;a disc coupled to the lever;a pivot allowing the lever to travel from a first position to a second position, wherein the first position is an open position whereby the disc is decoupled from a valve seat and wherein the second position is a closed position whereby the disc is coupled to the valve seat;an internal magnet physically coupled to the lever; andan external magnet magnetically couplable to the lever, wherein in a first position a magnetic force between the internal magnet and the external magnet causes the lever to travel to the first position and in a second position the magnetic force between the internal magnet and the external magnet causes the lever to travel to the second position.2. The valve of claim 1 , wherein the internal magnet comprises neodymium encapsulated in a housing.3. The valve of claim 1 , wherein the internal magnet comprises samarium cobalt claim 1 , alnico claim 1 , ceramic claim 1 , or ferrite.4. The valve of claim 1 , wherein the internal magnet comprises neodymium encapsulated in a shield.5. The valve of claim 1 , wherein the internal magnet comprises samarium cobalt claim 1 , alnico claim 1 , ceramic claim 1 , or ferrite.6. The valve of claim 1 , wherein the valve seat comprises a rubber gasket.7. The valve of claim 1 , further comprising a second external magnet claim 1 , wherein in a third position the magnetic force between the internal magnet claim 1 , the external magnet claim 1 , and the second external magnet causes the lever to travel to the first position and in a fourth position the magnetic ...

High Pressure Valve With Telescopic Piston

A valve for pressurized gas or chemical agent. The valve comprises: a body with: an inlet, an outlet, and a passage which connects the inlet with the outlet and which includes a seat]. The valve further comprises a sliding piston able to engage with the seat in order to close the passage and a telescopic extension sliding against the passage in order to guide the piston in the passage at least between the open position and the closed position. The pressure difference between opposite faces of the piston pulls away the piston and the telescopic extension from the seat in order to open the passage, the passage remaining closed under pressure equilibrium. Additionally, a fire extinguishing system. 116.-. (canceled)17. A valve for pressurized gas , said valve comprising:a body with an inlet, an outlet, and a passage which connects the inlet with the outlet and which includes a seat; anda sliding piston with two opposite faces, that is designed and configured for cooperating with the seat in order to close the passage;the valve being designed and configured in such a way that a differential pressure on opposite faces of the piston pulls the piston away from the seat in order to open the passage,wherein the piston is provided with a telescopic extension sliding against the passage in order to guide the piston in the passage at least between an open position and a closed position.18. The valve according to claim 17 , wherein the piston is slidable within the telescopic extension claim 17 , the telescopic extension forming a tube around the piston.19. The valve according to claim 17 , wherein the piston comprises a sealing element at a sliding interface with the telescopic extension claim 17 , the sealing element arranged at the level of the outlet when the piston is in a closed state claim 17 , a distance X between the sealing element and the seat is smaller than an outlet height Y.20. The valve according to claim 17 , wherein the piston comprises a through hole in fluid ...

METHOD FOR OPERATION CONTROL OF COMPRESSOR AND THE COMPRESSOR

In a method for operation control of a compressor, full-load running in which a gas intake control valve is fully open and a target rotation speed of a drive source is set to a full-load rotation speed that is a maximum rotation speed in a speed control band when pressure of compressed gas supplied to the consumption side is a datum pressure or less is carried out; then no-load running in which the valve is fully closed and a no-load rotation speed is set as the target rotation speed of the drive source when the supply pressure is a no-load running pressure or less that is a pressure higher than the datum pressure is carried out. The no-load running is started from the standard no-load rotation speed, however, after a transition time, the target rotation speed is reduced to a low speed no-load rotation speed. 1. A method for operation control of a compressor to perform capacity control configured by control of a gas intake rate using a gas intake control valve provided in a gas intake port of a compressor body and by control of a rotation speed of a drive source driving the compressor body so that a pressure of compressed gas supplied to a consumption side lies within a predetermined range , the capacity control comprising:full-load running in which the gas intake control valve is fully open and a target rotation speed of the drive source is set to a full-load rotation speed that is a maximum rotation speed in a speed control band when a supply pressure that is a pressure of compressed gas supplied to the consumption side is equal to or less than a predetermined datum pressure; andno-load running in which the gas intake control valve is fully closed and a predetermined no-load rotation speed is set as the target rotation speed of the drive source, when the supply pressure is equal to or greater than a no-load running pressure that is a predetermined pressure higher than the datum pressure;starting the no-load running with a predetermined standard no-load rotation ...

VALVES

A self-energizing valve includes a valve body defining an inner chamber having an inlet and an outlet. A valve head within the inner chamber is moveable between a first position and a second position. A valve seal in fluid communication with the inlet has a sealing surface with a sealing member between the valve head and the valve seal. The sealing member is movable between a closed position where the sealing member engages with the sealing surface and an open position where the sealing member disengages from the sealing surface to allow flow through the inlet into the inner chamber. A cam is coupled to the valve head. Rotation of the cam causes movement of the valve head between the first position and the second position to move the valve head to the first position to hold the sealing member in the closed position. 1. A self-energizing valve , comprising:a valve body having an inner wall defining an inner chamber in fluid communication with a valve inlet and a valve outlet;a valve head positioned within the inner chamber, the valve head moveable between a first position and a second position;a valve seal in fluid communication with the valve inlet and having a sealing surface;a sealing member positioned between the valve head and the valve seal, the sealing member movable between a first closed position where the sealing member engages with the sealing surface of the valve seal to seal the inlet and a second open position where the sealing member can disengage from the sealing surface of the valve seal to allow flow through the inlet into the inner chamber; anda cam engaged with a first surface of the valve head, whereby rotation of the cam allows movement of the valve head between the first position and the second position and whereby movement of the valve head to the first position holds the sealing member in the first closed position.2. The self-energizing valve of claim 1 , wherein the inner chamber defines an inner cylindrical wall and the valve head is sized ...

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 ...

HYBRID CHECK VALVE

An assembly is provided that can include check valve. The check valve can include a ball positioned between an inflow line and an outflow line. The ball can be movable between (i) an open position at which a fluid is allowed to flow between the inflow line and the outflow line and (ii) a closed position at which the fluid is prevented from flowing between the inflow line and the outflow line. The assembly can also include a spring positioned adjacent to the ball and operable to bias the ball in a closed position. The assembly can further include a poppet positioned adjacent to the ball. The poppet can be movable in response to a communication of a pilot pressure to the poppet. Further, the ball can be movable to the closed position in response to a force applied by the poppet. 1. An assembly , comprising:a check valve that includes a ball positioned between an inflow line and an outflow line, the ball being movable between (i) an open position at which a fluid is allowed to flow between the inflow line and the outflow line and (ii) a closed position at which the fluid is prevented from flowing between the inflow line and the outflow line;a spring positioned adjacent to the ball and operable to bias the ball in the closed position; anda poppet positioned adjacent to the ball, wherein the poppet is movable in response to a communication of a pilot pressure to the poppet, and the ball is movable to the closed position in response to a force applied by the poppet.2. The assembly of claim 1 , further comprising a seat positioned adjacent to the ball for forming a seal when the ball is in the closed position.3. The assembly of claim 1 , wherein the check valve further comprises a cap removably coupled to a housing of the check valve.4. The assembly of claim 1 , further comprising a seal positioned around an outer diameter of the poppet.5. The assembly of claim 1 , further comprising a solenoid valve coupled to the poppet claim 1 , the solenoid valve operable to move the ...

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 ...

Systems, assemblies, and methods of reducing head loss in heating devices

Low head loss systems are detailed. The systems may include chambers having low impedance to water flow therethrough and repositionable gates or other valves within the chambers. The valves may direct water as a function of whether an associated heating device is active. At least some gates may incorporate poppet valves or other high-flow by-passes.

MANUAL RESET ACTUATOR

A manual reset actuator 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. 120.-. (canceled)21. A manual reset actuator , comprising:a chamber;a diaphragm port coupled with the chamber, the diaphragm port to removably couple with a flow control valve;a supply port coupled with the chamber, the supply port to receive fluid; 'a plunger in the chamber, the plunger to move between a first position to prevent fluid flow between the chamber and the drain port and a second position to allow fluid flow between the diaphragm port and the drain port through the chamber, the plunger to stay in the first position responsive to being moved from the second position to the first position and sufficient fluid being received in the chamber through the supply port until a pressure in the chamber meets a threshold pressure.', 'a drain port coupled with the chamber; and'}22. The manual reset actuator of claim 21 , comprising:at least one gasket between the supply port and the chamber and between the diaphragm port and the chamber.23. The manual reset actuator of claim 21 , comprising:the diaphragm port and the supply port are defined on a same side of the chamber.24. The manual reset actuator of ...

PISTON COMPRESSOR VALVE AND METHOD FOR OPERATING A PISTON COMPRESSOR VALVE

A piston compressor valve including a valve seat having a plurality of through openings including a closing element which is rotatable about an axis of rotation (D) for opening and closing the through openings and having an actuating drive for rotating the closing element, wherein the valve seat has an end face into which the through openings lead, wherein the closing element is movably connected to the actuating drive in the running direction of the axis of rotation (D), such that the closing element is both rotatable about the axis of rotation (D) and also movable in the running direction of the axis of rotation (D) relative to the end face, and having a sensor for detecting a condition variable (E) of the piston compressor valve, and having a control device which activates the actuating drive as a function of the condition variable (E). 1. A piston compressor valve comprising a valve seat having a plurality of passage openings , comprising a closing element which for opening and closing the passage openings is rotatable about a rotation axis (D) , and comprising an actuator drive for rotating the closing element , wherein the valve seat has an end side into which the passage openings open out , wherein the closing element is designed so as to be integral , wherein the closing element is fixedly connected to the rotation axis (D) , wherein the closing element is connected to the actuator drive so as to be movable in a self-acting manner in the profile direction of the rotation axis (D) such that the closing element is rotatable about the rotation axis (D) by the actuator drive as well as displaceable in a self-acting manner in the profile direction of the rotation axis (D) in relation to the end side , and comprising a sensor for detecting a state variable (E) of the piston compressor valve , and comprising an actuating device which activates the actuator drive as a function of the state variable (E).2. The valve as claimed in claim 1 , wherein the sensor is ...

VALVE CLOSURE FOR A PISTON COMPRESSOR VALVE AND METHOD FOR OPERATING THE VALVE CLOSURE

A valve closure for a piston compressor valve including: a valve seat having a plurality of passage openings, a shaft having an axis of rotation (D), and a rotatable closing element connected to the shaft for opening and closing the passage openings, the valve seat having a flat end face, to which the passage openings lead and a center (Z): the passage openings extending radially to the center (Z); and the closing element having a center point (M) and a plurality of closing arms extending radially to the center point (M). The shaft can be rotated about the axis of rotation and can be slid in the extension direction of the axis of rotation extending perpendicularly to the end face and through the center (Z); each closing arm having a sealing surface substantially complementary to the passage openings in accordance with the rotation of the closing element. 1. A valve closure for a piston compressor valve , comprising a valve seat having a plurality of passage openings , comprising a shaft having a rotation axis (D) , and comprising a closing element that for opening and closing the passage openings is rotatable about the rotation axis (D) of the shaft , wherein the valve seat comprises a planar end side into which the passage openings open out , wherein the valve seat has a center (Z) , and wherein the passage openings run so as to be radial to the center (Z) ,wherein the rotation axis (D) runs so as to be perpendicular to the end side and through the center (Z),wherein the closing element is designed in one piece, that the closing element is fixedly connected to the shaft, that the closing element has a center point (M) and a plurality of closing arms that run so as to be radial to the center point (M), that the shaft is mounted in the valve seat in such a manner that the shaft is disposed so as to be rotatable about the rotation axis (D) as well as displaceable in the profile direction (L) of the rotation axis (D), that each closing arm has a sealing face that is ...

Fluid control device

A fluid control device includes a valve, a pump and a film valve. The valve includes a first main plate, a second main plate, a first side plate, and a valve chamber. The first main plate has a first vent hole, and the second main plate has a second vent hole. The film valve is disposed in the valve chamber. The first vent hole is positioned in a central region of the valve chamber, and the second vent hole is positioned in an outer end region of the valve chamber. The film valve is positioned between the first vent hole and the second vent hole. The film valve is fixed to the second main plate in a state in which an end portion on a side of the outer end region or an end portion on a side of the central region is capable of vibrating.

CHECK VALVE

A check valve can include a pressure actuator or an electromagnetic actuator. The check valve includes a valve inlet, a valve outlet, and flap disposed between the valve inlet and the valve outlet. The check valve has an open state and a closed state. The pressure actuator in fluid communication with the valve inlet. The check valve has an open state and a closed state. The check valve is configured to allow an input gas to flow from the valve inlet to the valve outlet when the check valve is in the open state. The check valve is configured to preclude the input gas from flowing from the valve inlet to the valve outlet when the check valve is in the closed state. Upon actuation of the pressure actuator or the electromagnetic actuator, the flap moves away from the valve inlet to allow the inlet gas to move from the valve inlet to the valve outlet. 1. A check valve , comprising:a valve inlet;a valve outlet;a pressure actuator in fluid communication with the valve inlet;a flap disposed between the valve inlet and the valve outlet, the flap including a first flap portion and a second flap portion;wherein the check valve has an open state and a closed state;wherein the check valve is configured to allow an input gas to flow from the valve inlet to the valve outlet when the check valve is in the open state;wherein the check valve is configured to preclude the input gas from flowing from the valve inlet to the valve outlet when the check valve is in the closed state;wherein, upon actuation of the pressure actuator, the first flap portion and the second flap portion separate from each other to allow the input gas to flow from the valve inlet to the valve outlet of the check valve.2. The check valve of claim 1 , further comprising an inner valve surface and an air channel on the inner valve surface claim 1 , wherein the flap blocks the air channel when the check valve is in a closed state to block the input gas from flowing from the valve into the valve outlet.3. The check ...

AIR PRESSURE REGULATOR

An air pressure regulator includes a regulator body defining a hollow interior, an air inlet in communication with the hollow interior and configured to connect with a source of pressurized air, an air outlet fluidly coupled with the air inlet, and a valve stem positioned at the air inlet and configured to regulate the pressure of the pressurized air for the air outlet by way of movement of the valve stem relative to the air inlet. 1. An air pressure regulator comprising:a regulator body defining a hollow interior;an air inlet in communication with the hollow interior and configured to connect with a source of pressurized air;an air outlet fluidly coupled with the air inlet;a valve stem positioned at the air inlet and configured to regulate the pressure of the pressurized air for the air outlet by way of movement of the valve stem relative to the air inlet;a restraining element disposed within the hollow interior and coupled with the valve stem such that the valve stem and the restraining element move in unison wherein the restraining element includes an electrically conductive sleeve; anda magnet having a magnetic field mounted to the regulator body wherein the magnetic field encompasses at least part of the conductive sleeve;wherein movement of the conductive sleeve relative to the magnetic field is retarded by Eddy currents generated in the conductive sleeve by the movement.2. The air pressure regulator of wherein vibrational movement of at least one of the regulator body claim 1 , the valve stem claim 1 , the air inlet claim 1 , the air outlet claim 1 , or the restraining element is retarded by Eddy currents generated in the conductive sleeve by the movement of the conductive sleeve relative to the magnetic field.3. The air pressure regulator of wherein at least one of the magnet or conductive sleeve is configured to retard vibrational movement in an aircraft.4. The air pressure regulator of wherein the restraining element includes a mechanical restraining ...

INTEGRAL CHECK VALVE LOCK OPEN DEVICE FOR OIL AND GAS EQUIPMENT

An inventive lock open device for use with a poppet type check valve is disclosed. The device permits bidirectional flow of fluid or gas by defeating the check valve sealing device which permits hydrostatic testing without the need for check valve disassembly or the need for additional tooling.

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 ...

Tilting disc check valve

The invention discloses a tilting disc check valve, which includes a left valve body ( 1 ), a right valve body ( 2 ), a large valve plate ( 3 ), a small valve plate ( 4 ) and a diaphragm control group ( 5 ), wherein the left valve body ( 1 ) and the right valve body ( 2 ) are butted into a whole through oblique openings; the oblique openings are inclined in a manner that upper parts are inclined towards the right valve body ( 2 ); the diaphragm control group ( 5 ) is arranged on the left valve body ( 1 ); the large valve plate ( 3 ) is arranged along the oblique openings; the large valve plate ( 3 ) is positioned in a valve cavity formed by the left valve body ( 1 ) and the right valve body ( 2 ); the large valve plate ( 3 ) is suspended on shaft holes of the left valve body ( 3 ) through valve shafts ( 6 ); the small valve plate ( 4 ) is connected with the diaphragm control group ( 5 ); and the small valve plate ( 4 ) is mounted at a slow closing valve port of the large valve plate ( 3 ) through a small valve plate pin shaft ( 7 ). According to the tilting disc check valve, a two-stage valve closing process where the large valve plate is quickly closed and the small valve plate at a drain hole of the large valve plate is slowly closed within adjustable time can be implemented, and the aims of reducing backflow of a water body and eliminating pump starting and stopping water hammer are fulfilled.

PILOT OPERATED BLOW-OFF VALVES FOR HYDRAULIC ACTUATORS

Disclosed herein are various embodiments of a hydraulic actuator that includes one or more check valves having a dynamically varying cracking pressure. In certain embodiments, a hydraulic actuator may be configured to vary the cracking pressure of a check valve based on an operating condition of a pump of the hydraulic actuator. The check valve may be located along a bypass path in the hydraulic actuator, thereby allowing for fluid flow to bypass a pump of the hydraulic actuator by passing through the check valve. The use of such hydraulic actuators is contemplated in, for example, an active suspension system of a vehicle. Additionally, various embodiments of suitable check valves are disclosed. Additionally, methods are disclosed for operation of the check valve and the hydraulic actuator. 1. A hydraulic actuator comprising:a hydraulic cylinder having an internal volume;a piston slidably received in the hydraulic cylinder, thereby dividing the internal volume into a compression chamber and an extension chamber;a pump having a compression-side port and an extension-side port;a compression-side flow path that connects the compression-side port of the pump to the compression chamber;an extension-side flow path that connects the extension-side port of the pump to the extension chamber;a first bypass flow path that connects the compression chamber to the extension chamber, wherein the first bypass flow path does not include the pump;a first check valve disposed along the first bypass flow path, wherein a cracking pressure of the first check valve dynamically varies based on an operating condition of the hydraulic actuator.2. The hydraulic actuator of claim 1 , wherein the pump is configured to vary a pressure differential between the compression-side port and the extension-side port claim 1 , and wherein the operating condition of the hydraulic actuator is the pressure differential generated by the pump at a given time.3. The hydraulic actuator of claim 2 , further ...

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 ...

DENTAL VALVE DEVICE HAVING A FLEXIBLE TUBING

A dental valve device has a valve body having a tip receiving end having a flexible tubing extending outwardly from the tip receiving end with the flexible tubing having a flexible tubing opening, a hose receiving end, a lumen formed between the flexible tubing opening and the hose receiving end, and a partial opening formed in the valve body, and a rotatable valve sealing body adapted to be inserted into the partial opening, the rotatable valve sealing body having a bore for alignment with the lumen formed between the flexible tubing opening and the hose receiving end, the bore having a tip receiving opening and a hose receiving opening. 1. A dental valve device comprises:a valve body having a tip receiving end having a flexible tubing extending outwardly from the tip receiving end with the flexible tubing having a flexible tubing opening, a hose receiving end, a lumen formed between the flexible tubing opening and the hose receiving end, and a partial opening formed in the valve body; anda rotatable valve sealing body adapted to be inserted into the partial opening, the rotatable valve sealing body having a bore for alignment with the lumen formed between the flexible tubing opening and the hose receiving end, the bore having a tip receiving opening and a hose receiving opening.2. The dental valve device of wherein the rotatable valve sealing body further comprises a lower end having an annular ring having a surface and an indentation formed within the annular ring.3. The dental valve device of wherein the rotatable valve sealing body further comprises a top and an annular ridge portion is positioned near the top.4. The dental valve device of wherein the rotatable valve sealing body and the valve body are each constructed of plastic.5. The dental valve device of wherein the rotatable valve sealing body further comprises a top and a handle portion connected to the top.6. The dental valve device of wherein the tip receiving opening and the hose receiving opening of ...

Cleaning apparatuses for check valves

A method, system, apparatus, and/or device for cleaning a check valve of a pressurized pipe system. The method, system, apparatus, and/or device may include a first check valve attached between pipes of a pressurized pipe system. The first check valve may include a housing, a disc attached to an interior cavity of the housing, a port formed in the housing, and a second check valve attached to the port. The disc may be configured to move between an open position to allow a first fluid to flow from a first pipe to a second pipe and a closed position to stop the first fluid from flowing from the second pipe to the first pipe. The second check valve may be configured to allow the second fluid to flow into the first check valve and stop the first fluid from flowing out of the second check valve.

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.

VALVE CONFIGURED FOR REGULATING THE FLOW OF FLUID BETWEEN A DEVICE AND A COOLER

A fluid circuit includes a device, a cooler, and a valve. The valve includes a housing, a sealing member, a biasing device, and an actuator. The sealing member moves inside the housing between a first position and a second position. The actuator includes a smart material that is activated when the temperature of a fluid inside the housing exhibiting at least a first temperature, causing the sealing member to move to the second position. The smart material is deactivated when the fluid is a sufficient number of degrees less than the first temperature, causing the sealing member to move to the first position. The fluid flows from the housing to the device and then to the housing when the sealing member is in the first position. The fluid flows from the housing to the cooler and then to the device when the sealing member is in the second position. 1. A valve configured for directing the flow of fluid received from a device to one of the device and a cooler within a fluid circuit , the valve comprising:a housing defining a cavity extending along a longitudinal axis between a first end and a second end, wherein the cavity is configured for receiving and expelling the fluid;wherein the housing includes a first reaction surface and a second reaction surface, wherein the second reaction surface is disposed in spaced and facing relationship to the first reaction surface along the longitudinal axis;a sealing member disposed in the cavity and movable therein along the longitudinal axis between a first position and a second position, wherein the sealing member extends along the longitudinal axis between a first face and a second face;wherein the sealing member defines a first recess extending along the longitudinal axis from the first face to a first side;a biasing device partially operatively disposed in the first recess between the first side of the sealing member and the first reaction surface of the housing; andan actuator operatively disposed in the cavity between the ...

SOLENOID VALVE DIVERTER SLEEVE

A solenoid valve includes a support bushing and an armature pin axially movable within the support bushing. The solenoid shield further includes a valve rigidly secured to the armature pin. The valve includes a diverter sleeve having an overlap portion that is radially spaced from at least a portion of the support bushing and extends along a length of at least a portion of the support bushing. The diverter sleeve further includes a deflector surface disposed at an angle relative to a longitudinal axis of the armature pin. 1. A solenoid valve comprising:a support bushing;an armature pin axially movable within the support bushing; and an overlap portion radially spaced from and extending along a length of at least a portion of the support bushing, and', 'a deflector surface disposed at an angle relative to a longitudinal axis of the armature pin., 'a valve rigidly secured to the armature pin, the valve including a diverter sleeve having'}2. The solenoid valve of claim 1 , wherein the diverter sleeve is a discrete member rigidly secured to the valve.3. The solenoid valve of claim 1 , wherein the diverter sleeve is integrally formed with the valve.4. The solenoid valve of claim 1 , wherein the overlap portion of the diverter sleeve has an inner diameter greater than an outer diameter of at least a portion of the support bushing.5. The solenoid valve of claim 1 , wherein the overlap portion of the diverter sleeve overlaps at least a portion of the support bushing around an entire circumference of the support bushing.6. The solenoid valve of claim 1 , wherein the valve and the diverter sleeve are axially movable with respect to the support bushing.7. The solenoid valve of claim 1 , wherein the deflector surface extends at an angle generally toward an exhaust port of the solenoid valve.8. The solenoid valve of claim 1 , wherein the deflector surface is exposed in a flow path of a hydraulic fluid to deflect flow of the hydraulic fluid.9. The solenoid valve of claim 1 , ...

DELAY VALVE FOR A HYDRAULIC WORK SUPPORT

An unclamp delay valve for delaying release of hydraulic pressure in a hydraulic holding device. The unclamp delay valve may have a check valve allowing fluid to flow between an inlet port and an outlet port when held open by a piston translatable within a piston chamber. The check valve blocks fluid from flowing between the outlet port and the inlet port when released due to hydraulic fluid filling the piston chamber and translating the piston away from the check valve. To reopen the check valve, hydraulic pressure is released via the inlet port and slowly drains from a small orifice fluidly coupling the piston chamber and the inlet port, causing the piston to return to again open the check valve. A delay is thus created by the time it takes for the piston chamber to drain, thus opening the check valve to release hydraulic pressure therethrough. 1. A delay valve configured for delaying release of hydraulic pressure in a hydraulic holding device , the delay valve comprising:a housing forming an inlet port, an outlet port, and a piston chamber, wherein the inlet port is selectively fluidly coupled with the piston chamber, and the inlet port is selectively fluidly coupled with the outlet port;a check valve located between the inlet port and the outlet port, wherein the check valve is actuatable between an open configuration allowing fluid to flow therethrough and a closed configuration blocking fluid from flowing therethrough;a piston translatable within the piston chamber, the piston having a rod portion that engages and holds the check valve in the open configuration when the piston is in a first stroke position and releases the check valve to the closed configuration when the piston is hydraulically translated to a second stroke position via hydraulic fluid filling at least a portion of the piston chamber; anda flow control device operable to control flow of hydraulic fluid between the inlet port and the piston chamber, wherein the flow control device is integral ...

Pump

A pump ( 10 ) includes: a flat plate ( 20 ); a piezoelectric element ( 21 ); a flat plate ( 30 ); a side wall ( 40 ); a support member ( 22 ); a support member ( 32 ); a shielding plate ( 500 ); a ventilation hole ( 23 ); a ventilation hole ( 33 ); a film valve ( 61 ); and a film valve ( 62 ). The film valve ( 61 ) is arranged in a region where the flat plate ( 20 ) and the shielding plate ( 500 ) face each other. The film valve ( 62 ) is arranged in a region where the flat plate ( 30 ) and the shielding plate ( 500 ) face each other. A center side of one of the film valve ( 61 ) and the film valve ( 62 ) is fixed in a state in which an outer edge side is movable, and the outer edge side of the other is fixed in a state in which the center side is movable.

VALVE SYSTEM FOR PNEUMATIC CYLINDERS

A valve system for use with a cylinder having an extensible rod, includes first and second valve assemblies, each including an inlet/outlet port configured to selectively be coupled with a source of pressurized gas, a check valve biased toward a closed state and having a check valve body at least partially receivable within a first port of the cylinder, a flow control valve positioned in series between the inlet/outlet port and the check valve, and an inlet pilot port connected with the check valve for opening the check valve when supplied with pressurized gas. First and second pilot lines extend to the respective inlet pilot ports from respective outlet pilot ports of the opposite ones of the first and second valve assemblies. When pressurized gas is supplied to the inlet/outlet port of a valve assembly, pressurized gas is also supplied to the opposite inlet pilot port. 1. A valve system for use with a double-acting cylinder having an extensible and retractable rod and opposing first and second cylinder ports , the valve system comprising: an inlet/outlet port configured to selectively be coupled with a source of pressurized gas,', 'a check valve biased toward a closed state and having a check valve body defining a cylinder connection port of the first valve assembly that is at least partially receivable within the first cylinder port,', 'a flow control valve positioned in series between the inlet/outlet port and the check valve, and', 'an inlet pilot port connected with the check valve for opening the check valve when supplied with pressurized gas;, 'a first valve assembly including'} an inlet/outlet port configured to selectively be coupled with a source of pressurized gas,', 'a check valve biased toward a closed state and having a check valve body defining a cylinder connection port of the second valve assembly that is at least partially receivable within the second cylinder port,', 'a flow control valve positioned in the second valve assembly in series between ...

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 ...

Downhole Valve Assembly and Methods of Using the Same

A wellbore servicing system including a work string and a valve tool defining an flowbore, wherein the valve tool is transitionable from a first mode to a second mode, from the second mode to a third mode, and from the third mode to a fourth mode, wherein the valve tool transitions from the first mode to the second mode upon an application of pressure to the flowbore of at least a threshold pressure, wherein the valve tool transitions from the second mode to the third mode upon a dissipation of pressure from the flowbore to not more than the threshold pressure, wherein, in the first mode, the valve tool allows fluid communication via the flowbore in a first direction and disallows fluid communication in a second direction, and wherein, in the second, and third modes, the valve tool allows fluid communication in both the first and second directions. 1. A wellbore servicing system comprising:a work string comprising a coiled tubing string and a jointed tubing segment; and wherein the actuatable valve tool is transitionable from a first mode to a second mode, from the second mode to a third mode, and from the third mode to a fourth mode,', 'wherein the actuatable valve tool is configured to transition from the first mode to the second mode upon an application of pressure to the axial flowbore of at least a threshold pressure,', 'wherein the actuatable valve tool is configured to transition from the second mode to the third mode upon a dissipation of pressure from the axial flowbore to not more than the threshold pressure,', 'wherein, in the first mode, the actuatable valve tool is configured to allow fluid communication via the axial flowbore in a first direction and to disallow fluid communication via the axial flowbore in a second direction, and', 'wherein, in the second, and third modes, the actuatable valve tool is configured to allow fluid communication via the axial flowbore in both the first direction and the second direction., 'an actuatable valve tool defining ...

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 ...

Dump valve assembly with spring and method therefor

A dump valve assembly is disclosed. The dump valve assembly has a seat plug, a spring, a standing valve, and a ball. The seat plug is anchored to the standing valve and has two prongs that engage two corresponding slots within the standing valve. By pressing downwardly upon the seat plug, the spring is compressed and the prongs slide downwardly until they engage the ball. By ceasing the downward pressure on the seat plug, the spring relaxes and expands, thereby lifting the ball off of the standing valve in order to open the standing valve for pump drainage.

Industrial High Pressure Hand Valve

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

VALVE AND METHOD OF RELIEVING OVERPRESSURE IN A FLUID SUPPLY SYSTEM

A valve is provided. The valve includes a housing including an interior and a side wall at least partially delimiting the interior, a valve element within the interior of the housing and configured to be selectively operable between an open position and a closed position. The valve element includes an interior and a side wall at least partially delimiting the interior of the valve element. The valve also includes a series of pressure relief devices within the side walls of the housing and the valve element. The series of pressure relief devices include at least one check valve and are configured to provide flow communication from the interior of the housing to exterior of the housing upon actuation of the at least one check valve. 1. A valve comprising:a housing comprising an interior and a side wall at least partially delimiting said interior;a valve element within said interior of said housing and configured to be selectively operable between an open position and a closed position, said valve element comprising an interior and a side wall at least partially delimiting the interior of said valve element; anda series of pressure relief devices within said side walls of said housing and said valve element, said series of pressure relief devices comprising at least one check valve and configured to provide flow communication from said interior of said housing to exterior of said housing upon actuation of said at least one check valve.2. The valve in accordance with claim 1 , wherein said at least one check valve is configured to restrict fluid flow through said series of pressure relief devices when said valve element is in the open position claim 1 , and configured to allow fluid flow through said series of pressure relief devices when said valve element is in the closed position.3. The valve in accordance with claim 2 , wherein said at least one check valve is configured to restrict fluid flow in a first direction claim 2 , and configured to allow fluid flow in a ...

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 ...

Radiofrequency enabled filtering facepiece respirator

A radiofrequency enabled filtering facepiece respirator is provided. The filtering facepiece respirator includes a facemask adapted to fit over the nose and mouth of a wearer, where the facemask comprising a mask body containing a filtering structure. A harness is coupled to the mask body for securing the facemask on the face of the wearer. A mechanical valve is coupled to a portion of the mask body proximate the wearer's mouth, where the valve is adjustable between a first mode of operation and a second mode of operation. In the first mode of operation, air is permitted to flow through the valve on exhalation but not on inhalation. In the second mode of operation, air is obstructed from flowing through the valve on exhalation and inhalation

Coupling Assembly for a Pipe and Valve Assembly Comprising the Same

A valve assembly comprising: a body having a threaded tubular connector sized and shaped to receive a pipe having a first fluid line; a primary passageway defined through the body and the tubular connector for connection to the first fluid line; a valve disposed in the primary passageway; and a coupling assembly for sealingly connecting the pipe to the body, the coupling assembly including: an annular compression member adapted to be disposed around the pipe, the annular compression member threadingly engaging the tubular connector such that rotation of the compression member selectively moves the annular compression member axially towards and away from the body; and an O-ring seal adapted to be disposed concentrically around the pipe between the annular compression member and the body, the O-ring being compressed when the annular compression member is moved towards the body to create a seal between the pipe and the body.

MULTIPLE VALVE REFRIGERANT LEAK PROTECTION DEVICE

The present application relates to an apparatus of joined valves used to test and maintain refrigeration systems. More particularly, the present application provides a Multiple Valve Refrigerant Leak Protection Device having a specifically preferred embodiment including a ball valve with a soldered pipe connection, as part of the fitting with a Schrader valve, primarily used for the maintenance and transfer of refrigerant from commercial refrigeration equipment. Schrader valves are most commonly used in this application with a ball valve. A ball valve would be the preferred valve, but a wide range of valves could be used. The resulting valves can be used to test and maintain refrigeration systems, and act to prevent leakage where refrigeration fluids are often released to the atmosphere when the system is being maintained or repaired. 1. A multiple valve refrigerant leakage protection device comprising:(a) a ball valve section having an interior portion and exterior portion, including a ball valve housing and a rotatable handle located on said ball valve exterior portion, and a ball valve and a refrigerant flow-through channel located within said ball valve interior portion; and(b) a Schrader valve section having an interior portion and an exterior portion, including a Schrader valve fitting and a spring-loaded pin located on said Schrader valve exterior portion, and an air chuck and a refrigerant flow-through channel located within said Schrader valve interior portion;wherein said ball valve section and said Schrader valve section are integrated into a single combined unit, and when in use as a single combined unit prevent leakage of refrigerant during refrigerant drainage and fill operations.2. The multiple valve refrigerant leakage protection device according to claim 1 , wherein said ball valve section further includes a soldered pipe connection.3. The multiple valve refrigerant leakage protection device according to claim 1 , wherein said ball valve section ...

HYDRANT VALVE WITH INTERNAL SHUT-OFF VALVE

A hydrant valve with an internal automatic shut-off valve. The internal valve blocks communication between a piston chamber and a hydrant chamber when in a closed position. An upper valve opens the internal valve against its biasing force permitting the flow of fluid between the hydrant chamber and the piston chamber. The internal valve closes in response to a disconnection of the upper valve. 1. A hydrant valve comprising:a hydrant chamber having an inlet and an outlet;a piston in the hydrant chamber moveable between open and closed positions relative to the inlet and a chamber disposed within the piston in communication with the inlet and the hydrant chamber;an upper valve movable between open and closed positions relative to the outlet, the upper valve having a biasing member that biases the upper valve toward the closed position, in the closed position the upper valve restricts fluid flow through the outlet and in the open position the upper valve permits fluid flow through the outlet;an internal valve movable between open and closed positions in response to a movement of the upper valve, in the open position the internal valve permits fluid flow between the hydrant chamber and the piston chamber and in the closed position the internal valve restricts fluid flow between the hydrant chamber and the piston chamber.2. The hydrant valve of further comprising:a pilot valve movable between open and closed positions, in the open position the pilot valve allows flow between the inlet and the internal valve and in the closed position the pilot valve allows flow between the inlet and the piston chamber.3. The hydrant valve of claim 1 , wherein the valve further comprises an upper portion.4. The hydrant valve of claim 3 , wherein at least one frangible connector secures the upper portion.5. The hydrant valve of claim 1 , wherein the internal valve moves towards the closed position in response to the upper valve moving towards the closed position.6. The hydrant valve of ...

Seat Valve With Electromagnetic Actuation

A seat valve with electromagnetic actuation combines, in one device, the functions of a seat valve, of a pressure-limiting valve and optionally also of one or more check valves. Furthermore, the switching noise of the seat valve function is reduced. In a de-energized state of an electromagnet, a fluid flow from a port P to a port TNC occurs only if a pressure difference between the ports P and TNC exceeds a limit value of Δp, wherein the force of the specified pressure difference overcomes the force of a spring and therefore pushes a first sealing body out of a first sealing seat, and in the energized state of the electromagnet, a fluid flow from port P to port TNC occurs even in the case of a pressure difference less than Δpif the force of the electromagnet together with the force of the pressure difference between the ports P and TNC overcomes the force of the spring, wherein the sum of the specified forces pushes the first sealing body out of the first sealing seat. The seat valve may be used in hydraulic brake systems of vehicles, also in vehicle gear mechanisms or in hydraulic drives. 1. A seat valve actuated by an electromagnet has a valve sleeve with at least one first sealing seat , has at least one first sealing body connected in a force-fitting manner to an armature of the electromagnet , and has at least two ports , namely ports P and TNC , for fluid flows ,wherein,{'sub': 'G', 'in a de-energized state of the electromagnet, a fluid flow from P to TNC occurs only if a pressure difference between the ports P and TNC exceeds a limit value of Δp, wherein a first pressure force of the pressure difference overcomes a spring force of a spring and pushes the first sealing body out of the first sealing seat,'}{'sub': 'G', 'and in that in an energized state of the electromagnet, a fluid flow from P to TNC occurs even in the case of a pressure difference less than Δpif an electromagnet force of the electromagnet together with the first pressure force of the pressure ...

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 ...

EVAPORATOR AND LOOP HEAT PIPE

An evaporator incorporated into a transportation machine includes: heat exchange units aligned in a horizontal direction in the transportation machine placed on a horizontal surface and whose positions change together; distribution conduits connected respectively to the heat exchange units to supply a working fluid in a liquid phase to the heat exchange units; and valves disposed respectively in the distribution conduits to block passage of the working fluid flowing from the heat exchange units toward the distribution conduits at least when a tilt of the heat exchange units is equal to or greater than a predetermined threshold. Each heat exchange unit includes: an inlet portion connected to the distribution conduit; and a heat exchange portion that includes at least one heat exchange path extending straight upward from the inlet portion and that allows the working fluid passing through the heat exchange path to exchange heat with the heat source. 1. An evaporator incorporated into a transportation machine to change at least a part of a working fluid from a liquid phase into a gas phase by heat absorbed from a heat source , comprising:a plurality of heat exchange units that are aligned in a horizontal direction in the transportation machine placed on a horizontal surface and whose positions change together;a plurality of distribution conduits connected respectively to the heat exchange units to supply the working fluid in the liquid phase to the heat exchange units; anda plurality of valves disposed respectively in the distribution conduits to block passage of the working fluid flowing from the heat exchange units toward the distribution conduits at least when a tilt of the heat exchange units is equal to or greater than a predetermined threshold,each heat exchange unit including:an inlet portion connected to the distribution conduit; anda heat exchange portion that includes at least one heat exchange path extending straight upward from the inlet portion and that ...

VALVE

Various embodiments of the present disclosure provide a reusable valve in which a seal portion is co-molded with and overmolded to the valve stem to provide a secure mechanical bond therebetween. In one embodiment, the valve includes a snap fit between the valve stem and a retaining cap to provide easy assembly of the valve as well as an efficient and compact retention mechanism for a biasing spring and the valve stem in relation to the valve housing. In one embodiment, the valve includes an easy-to-use opening and closing mechanism that provides tactile feedback to the user when moving the valve stem to an open position and to a closed position to inflate, deflate, or maintain air or gas pressure in the inflatable article. The present disclosure also provides a dunnage bag with such valve. 1. A valve comprising:a housing that includes: (1) an inner cylindrical wall that defines an opening; and (2) an annular wall that extends radially inward from the inner cylindrical wall and away from the opening; anda stem that includes a shaft and a base, wherein the base extends radially outward from the shaft and away from the opening, wherein the stem is connected to the housing and movable relative to the housing between an open position and a closed position.2. The valve of claim 1 , further comprising a biasing element that biases the stem to the closed position.3. The valve of claim 2 , further comprising a key attached to the stem claim 2 , the key retaining the biasing element in place.4. The valve of claim 1 , wherein the stem is lockable in the open position via rotation of the stem relative to the housing.5. The valve of claim 1 , wherein the shaft of the stem defines a first slot and the housing includes a protrusion at least partly positioned within the first slot to slidably retain the stem relative to the housing and enable the stem to move relative to the housing between the open position and the closed position.6. The valve of claim 5 , wherein the shaft of ...

SOLENOID VALVE ASSEMBLY WITH PILOT PRESSURE CONTROL

A valve assembly includes a valve body with an interior cavity and one or more supply ports, a control port, and an exhaust port each fluidly connected to the interior cavity. An armature assembly is movable within the interior cavity from a first position to a second position in response to the coil being energized. In some configurations, a regulator body, which is connected to the valve body, has an exhaust passage fluidly connected to the exhaust port. A regulator valve in the regulator body prevents fluid flow out of the exhaust passage when fluid pressure on the regulator valve is at or below a pilot pressure. The regulator valve permits fluid flow out of the exhaust passage when fluid pressure on the regulator valve is greater than the pilot pressure. The valve body is configured to provide fluid from the supply port/ports to the control port. 1. A solenoid valve assembly comprising:a valve body defining an interior cavity and a supply port and a control port each fluidly connected to the interior cavity;a selectively energizable coil defining an interior core;an armature assembly configured to move within the interior cavity between a first position to a second position responsive to the coil being energized, the armature assembly and the valve body being cooperatively configured to regulate fluid flow from the supply port to the control port when the armature is in the first or second position; anda pole piece at least partially disposed within the interior core of the coil adjacent the armature assembly; anda seal establishing a fluid seal between the valve body and the pole piece.2. The solenoid valve assembly of claim 1 , wherein the pole piece and the valve body cooperatively define a fluid leak path configured to pass air therethrough responsive to an inadvertent leak of the fluid seal.3. The solenoid valve assembly of claim 2 , wherein the pole piece includes a flange seated against the valve body claim 2 , the flange including a chamfered portion at ...

VALVE ASSEMBLY CAPABLE OF CONTROLLING FLOW DIRECTION OF FLUID ACCORDING TO TILT DIRECTION

The present invention proposes a valve assembly in which the flow direction of a fluid is controlled according to a tilt angle and a large amount of fluid can be moved. The valve assembly of the present invention consists of: a valve body () provided thereinside with an inner passage through which a fluid can pass, and having a pair of access ports () which are formed at positions opposite to each other to enable the fluid to flow in and out and are relatively long in the horizontal direction compared to the longitudinal direction, and a pair of seating portions () which are respectively formed in an inner portion of the pair of access ports; a pair of connection portions () which communicate with the pair of access ports and are connected so that the fluid can flow between the inside and the outside of the valve body; and one or a pair of check balls or check rollers (A, B) for controlling the flow of the fluid from the inside of the valve body to the connection portions by being seated in or spaced from the seating portions of the valve body. Also, a stopper enables the fluid to flow within a predetermined range at the access ports where the check balls or check rollers have been assigned. Accordingly, one check ball or check valve can open and close only an assigned access port so that the flow direction of the fluid can be quickly and accurately controlled. 1. A valve assembly comprising:a valve body including an inner passage, through which fluid passes, in an interior thereof, and including a pair of access ports formed at opposite positions and through which the fluid is introduced, and a plurality of seating parts formed at inner parts of the access ports;a pair of connection parts communicating with the access ports, respectively, and connecting the inside and the outside of the valve body such that the fluid flows between the inside and the outside of the valve body;a pair of check rollers or check balls which are seated in or spaced apart from the seating ...

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 ...

LIQUID DRIP PREVENTION VALVE

In a liquid drip prevention valve, an input port is formed in the upper face of a flow passage block, and an output port is formed in the lower face, which opposes the upper face of the flow passage block. In addition, a valve chamber is formed on a side face of the flow passage block, and an air block abuts the side face. Furthermore, a diaphragm valve makes contact with a valve seat when pressure is applied with respect to a back side chamber of the diaphragm valve and separates from the valve seat when the back side chamber is brought to negative pressure, thus forming the liquid drip prevention valve. 1. A liquid drip prevention valve comprising: a flow passage block including an input passage , an output passage , and a valve chamber with which the input passage and the output passage are communicated , the flow passage block being formed with a valve seat around a valve hole communicated with the output passage in the valve chamber;an air block formed with an airflow passage; and a diaphragm valve fixed between the flow passage block and the air block to move into or out of contact with the valve seat, whereinthe flow passage block is formed, on an upper face, with an input port communicated with the input passage,the flow passage block is formed, on a lower face opposite the upper face, with an output port communicated with the output passage,the valve chamber is formed in a side face of the flow passage block and the air block is in contact with the side face, andthe diaphragm valve will come into contact with the valve seat when a back side chamber of the diaphragm valve is pressurized and will separate from the valve seat when the back side chamber is subjected to negative pressure.2. The liquid drip prevention valve according to claim 1 ,wherein a diaphragm escape groove is formed around the valve seat,the diaphragm escape groove is formed in an annular form around the valve hole, anda valve chamber communication port is formed in the diaphragm escape ...

REVERSE OSMOSIS WATER-ON-WATER CONTROL VALVE

Described are water-on-water valves for use in reverse osmosis filtration systems. The water-on-water valves are regulated by the pressure in a product line, which contains fluid from a product line of the filter module and/or the product side of a water-on-water storage tank. Exemplary valves are shuttle valves that are regulated by the pressure downstream of the product side of a reverse osmosis filter module. The valves may comprise a piston within a housing, and an end of the piston may have an enlarged diameter relative to the maximum diameter of the remainder of the piston. The body of the piston may have sections of differing diameters, where the smaller diameter sections form flow channels, or the body may a diameter that is substantially the same along its length in conjunction with gratings and flow channels. 1. A filtration system comprising:a water-on-water storage tank comprising a squeeze side and a product side separated by a membrane;a filter module in fluid communication with the water-on-water storage tank, a feed source, a product outlet, and a drain outlet;a feed line connecting the feed source to a feed inlet of the filter module;a product line connecting a filtrate outlet of the filter module to the product side of the storage tank and the product outlet; anda drain line connecting a reject outlet of the filter module to the squeeze side of the storage tank and the drain outlet of the system; anda shuttle valve that regulates the flow from the feed source, wherein pressure in the product line determines the state of the shuttle valve;wherein the shuttle valve comprises a piston body having a plurality of sections, a first group of sections each independently being effective to block flow from or to one or more of the following: the valve feed inlet port, the valve feed outlet port, the drain port, the reject port, and the tank squeeze port depending on the state of the valve, and a second group of sections each being effective to permit flow ...

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 ...

VALVE ASSEMBLY

A valve assembly is provided with a first valve body provided with a first chamber; a shutter, which is movable in the first chamber and is connected to a control device; a second valve body, coupled to the first valve body and provided with a second chamber communicating with the first chamber; a check valve, at least partially housed in the second chamber; at least a first fitting, mechanically coupled to the second valve body; the second valve body and the first fitting being distinct pieces. 1. A valve assembly comprising:a first valve body provided with a first chamber;a shutter, which is movable in the first chamber and is connected to a control device;a second valve body, coupled to the first valve body and provided with a second chamber communicating with the first chamber;a check valve, at least partially housed in the second chamber; andat least a first fitting, mechanically coupled to the second valve body, the second valve body and the first fitting being distinct pieces,wherein the first fitting is coupled to the second valve body by means of a coupling allowing the free rotation between the second valve body and the first fitting and preventing the uncoupling between the second valve body and the first fitting.2. The valve assembly according to claim 1 , wherein the first valve body and the second valve body are made in one piece.3. The valve assembly according to claim 8 , wherein the first fitting is coupled to the second valve body by means of a threaded coupling.4. The valve assembly according to claim 9 , wherein the first fitting is coupled to the second valve body by means of a quick coupling.5. (canceled)6. The valve assembly according to claim 1 , wherein the first fitting is coupled to the second valve body by means of an elastic ring.7. The valve assembly according to claim 1 , wherein the second chamber is defined by a wall having a substantially cylindrical inner cross section.8. A valve assembly comprising:a first valve body provided with ...

METHODS AND HYDRAULIC APPARATUS

Methods can comprise charging a first hydraulic device of a first hydraulic circuit with a first quantity of hydraulic fluid from a hydraulic fluid source. The methods can further comprise pressurizing a control segment and locking the first quantity of hydraulic fluid from exiting the first hydraulic circuit in response to hydraulic pressure within the control segment. The methods can also include unlocking the first quantity of hydraulic fluid to permit exiting of the first quantity of hydraulic fluid from the first hydraulic device in response to dropping the hydraulic pressure within the control segment after a delay. Hydraulic apparatus can comprise a normally open hydraulic pilot operated control valve that can be configured to hydraulically lock a first hydraulic device in response to a hydraulic pressure within a control segment rising to greater than or equal to an actuation pressure. 1. A method comprising:placing a hydraulic fluid source in communication a first hydraulic circuit;charging a first hydraulic device of the first hydraulic circuit with a first quantity of hydraulic fluid from the hydraulic fluid source;pressurizing a control segment of the first hydraulic circuit with the hydraulic fluid source to a hydraulic pressure greater than or equal to an actuation pressure;locking the first quantity of hydraulic fluid from exiting the first hydraulic circuit in response to the hydraulic pressure within the control segment reaching greater than or equal to the actuation pressure;preventing further communication between the hydraulic fluid source and the first hydraulic circuit; andunlocking the first quantity of hydraulic fluid to permit exiting of the first quantity of hydraulic fluid from the first hydraulic device in response to dropping the hydraulic pressure within the control segment below the actuation pressure after a delay of about 0.5 seconds or more from the preventing further communication between the hydraulic fluid source and the first ...

Solenoid-Powered Gate Valve

A solenoid-powered gate valve that provides a reliable, high quality seal with a reduced operating force requirement. The valve includes a solenoid coil and armature connected to a valve mechanism, with the valve mechanism including a conduit having a connection opening, an oppositely-disposed pocket, and a sprung gate assembly linearly movable between the connection opening and the pocket. The sprung gate assembly includes a first gate member with an opening, a second gate member with an opening, and an endless elastic band retained between the first and second gate members, with the openings and endless elastic band collectively defining a passage through the sprung gate assembly, with the first and second gate members being mechanically coupled to the armature for reciprocating linear movement between the connection opening and the pocket. The endless elastic band allows an interference fit within the pocket with reduced frictional opposition to gate movement. 1. A powered gate valve comprising:a solenoid coil and an armature connected to a valve mechanism; a conduit having a connection opening and an oppositely-disposed pocket; and', 'a sprung gate assembly linearly movable between the connection opening and the pocket;, 'the valve mechanism includingwherein the sprung gate assembly includes a first gate member having an opening, a second gate member having an opening and opposing the first gate member, and an endless elastic band retained between the first and second gate members, with the openings and endless elastic band collectively defining a passage through the sprung gate assembly; andwherein the first and second gate members are mechanically coupled to the armature for reciprocating linear movement between the connection opening and the pocket.2. The powered gate valve of claim 1 , wherein the mechanical coupling comprises a stem projecting from the armature claim 1 , and a connection-opening end of the stem is affixed to the sprung gate assembly.3. The ...

HYDRANT VALVE WITH INTERNAL SHUT-OFF VALVE

A hydrant valve with an internal automatic shut-off valve. The internal valve blocks communication between a piston chamber and a hydrant chamber when in a closed position. An upper valve opens the internal valve against its biasing force permitting the flow of fluid between the hydrant chamber and the piston chamber. The internal valve closes in response to a disconnection of the upper valve. 1. A hydrant valve comprising:a hydrant chamber having an inlet and an outlet;a piston in the hydrant chamber moveable between open and closed positions relative to the inlet and a chamber disposed within the piston in communication with the inlet and the hydrant chamber;an upper valve movable between open and closed positions relative to the outlet, the upper valve having a biasing member that biases the upper valve toward the closed position, in the closed position the upper valve restricts fluid flow through the outlet and in the open position the upper valve permits fluid flow through the outlet;an internal valve movable between open and closed positions in response to a movement of the upper valve, in the open position the internal valve permits fluid flow between the hydrant chamber and the piston chamber and in the closed position the internal valve restricts fluid flow between the hydrant chamber and the piston chamber.2. The hydrant valve of further comprising:a pilot valve movable between open and closed positions, in the open position the pilot valve allows flow between the inlet and the internal valve and in the closed position the pilot valve allows flow between the inlet and the piston chamber.3. The hydrant valve of claim 1 , wherein the valve further comprises an upper portion.4. The hydrant valve of claim 3 , wherein at least one frangible connector secures the upper portion.5. The hydrant valve of claim 1 , wherein the internal valve moves towards the closed position in response to the upper valve moving towards the closed position.6. The hydrant valve of ...

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 , ...