Rueckschlagventil

Pipe section with closable access opening

A cleanout fitting has a tubular body adapted to be connected between a pair of conduits and having an upwardly open well defined between the upstream and downstream end of the body. This tubular body is formed internally with a downward upstream step and a downward downstream step. At its upstream step the body is also formed with a downwardly U-shaped abutment forming a downstream-facing upstream insert seat. At its downstream step the body has a plurality of ridges defining an upwardly open U-shaped seat. Inserts, normally check valves, have rings receivable in these seats and each have a valve flap engageable with the respective ring. A cover is sealingly engageable over the well, and also serves to hold at least the downstream insert in place in the respective seat.

CLEANING PIPE

FLOWLINE FLAPPER VALVE

A check valve assembly has a body having a central cavity intersected by upstream and downstream flow passages. A seat is secured by a threaded engagement in the upstream flow passage. An access bore intersects the cavity and has a support shoulder formed in it. A holder is supported on the support shoulder. A flapper is pivotally secured to the holder and located in the cavity for movement between an open position and a closed position blocking flow through the seat. A straight edge portion in the access bore engages a straight edge portion of the holder to prevent rotation of the holder. A fastener extends through a hole in the support shoulder into engagement with the seat to prevent rotation of the seat.

TORSION SPRING CONNECTIONS FOR DOWNHOLE FLAPPER

A torsion spring return system for a valve closure member, preferably for downhole use in an SSV, is described. The closure member or flapper uses torsion springs which can be wrapped circumferentially within the body of the downhole tool, generally following the periphery of the flapper. Downward rotation of the flapper stresses the torsion springs so that subsequently, when a flow tube or other device holding the flapper in one position is released, the torsion springs return the flapper to its seat. The connection between the torsion springs and the pin supporting the flapper is either a universal joint or involves an alignment rod running through the torsion spring, as well as other mechanisms which facilitate stress relief in the connection between the torsion spring and pivot pin.

FLAP CHECK VALVE.

CLEANING PIPE WITH ANGEFORMTEM LOCKABLE ONE CLEANING PIT.

Check valve for vacuum sewage pipe and vacuum sewage system

The present invention provides a check valve for use in a vacuum sewage pipe. The check valve includes a body having a sewage inlet and a sewage outlet to be coupled to the vacuum sewage pipe, a flap valve element disposed in the body and rotatably supported by a first shaft, and a closing mechanism. The closing mechanism can keep the flap valve element in a closed state so as to allow the flap valve element to function as a gate valve. The closing mechanism can also limit an opening degree of the flap valve element so as to allow the flap valve element to function as a check valve.

Centreline flow valve

A valve (10) is disclosed. The valve (10) has an inclined valve seat (14) defining a fluid aperture (18), and a valve head (20) for contact with the valve seat (14) for closure of the fluid aperture (18). A lever arm (22) is attached to the valve head (20). There are biasing means (32) operatively coupled to the lever (22) arm for urging the valve head (20) into contact with the valve seat (14), the biasing means (32) being arranged to provide decreased biasing on opening of the valve head (20) relative to the fluid aperture (18).

REINIGUNGSROHR

CLEANING PIPE

Check valve for a self-priming pump

Flowline flapper valve

A check valve assembly has a body having a central cavity intersected by upstream and downstream flow passages. A seat is secured by a threaded engagement in the upstream flow passage. An access bore intersects the cavity and has a support shoulder formed in it. A holder is supported on the support shoulder. A flapper is pivotally secured to the holder and located in the cavity for movement between an open position and a closed position blocking flow through the seat. A straight edge portion in the access bore engages a straight edge portion of the holder to prevent rotation of the holder. A fastener extends through a hole in the support shoulder into engagement with the seat to prevent rotation of the seat.

WAFER CHECK VALVES

TITLE OF THE INVENTION WAFER CHECK VALVES A wafer check valve having an annular housing, closing flaps effective to close a passage through the housing and spring urged to a passage closing position, the flaps being mounted on one or more hinge pins, the or each hinge pin extending at each end into a bore in an insert, the inserts being received in respective slots in the body and including means retaining the inserts in the slots without movement.

Fuel tank closure device

A fuel tank closure device includes a base sized to be received within an interior of fuel tank filler neck, a closure structure movably mounted on the base, and a biasing mechanism secured to the base and biasing the closure structure into a closed position on the base.

CHECK-VALVE ASSEMBLY

A check-valve assembly for allowing fluid to flow from one chamber to another, but check reverse flow. The assembly includes a flapper valve, made of elastomeric material which has a sealing face which seals against sealing surfaces directed toward the high pressure chamber, and an edge extending transversely to the face which seals against a closure member.

Check valve with accelerated closure

A check valve including a valve body and a flapper assembly, the valve body defining an inlet, an outlet, an interior cavity, and a port in the interior cavity; the flapper assembly movable between an open position, providing fluid communication between the inlet and outlet, and a closed position, isolating the inlet from the outlet, the flapper assembly including a resilient body and a spring assembly, the spring assembly configured to bias the flap portion of the resilient body towards the closed position, the spring assembly including a spring and a backing plate mounted on opposite surfaces of the resilient body and configured to increase the stiffness of the intermediate portion of the resilient body.

Torsion spring connections for a downhole flapper

Dishwasher with discharge pump and non-return valve.

In a dishwasher with a washing compartment (3) connected at the bottom to a collecting chamber (4) into which extends an outlet duct (8) of a discharge pump (6), the outlet duct is provided with a non-return valve (11) accessible from the interior of the washing compartment. The valve comprises a box-shaped body (12) formed in one piece with the outlet duct (8) which in turn is formed in one piece with the chamber (4). The valve (11) has a blocking member (18) in the form of a flexible membrane shaped with an extension engaging with a boss (21) formed in one piece with the box-shaped body (12). A projection (22) of a cap (13) which seals the box-shaped body (12) is in contact with the boss (21) to hold the membrane in position. ...

PIPE SECTION WITH CLOSABLE ACCESS OPENING

Quick maintenance undersea check valve

The present invention aims at simplifying maintenance, mounting and disassembly operations which are required with valves, and in particular with check valves. Thus, the present invention proposes a solution according to which the closing element (101) of the valve is rotatably fixed to the valve cover (200) so that said cover and said closing element can be simultaneously mounted back by means of a single operation.

FLOWLINE FLAPPER VALVE

A check valve assembly has a body having a central cavity intersected by upstream and downstream flow passages. A seat is secured by a threaded engagement in the upstream flow passage. An access bore intersects the cavity and has a support shoulder formed in it. A holder is supported on the support shoulder. A flapper is pivotally secured to the holder and located in the cavity for movement between an open position and a closed position blocking flow through the seat. A straight edge portion in the access bore engages a straight edge portion of the holder to prevent rotation of the holder. A fastener extends through a hole in the support shoulder into engagement with the seat to prevent rotation of the seat.

TOP-ENTRY CHECK VALVE HAVING RETAINER RING

A top-entry check valve having a seat, cage, disc and removable bonnet utilizes a retainer ring to prevent movement of the seat, cage and disc in the downstream direction. An annular shoulder in the valve body prevents movement of the seat, cage and disc in the upstream direction. The disc has a hinge pin which is cradled in hinge pin supports of the cage to hold the disc in place. The retainer ring is secured in the valve body by fitting into a transverse groove formed in the inside surface of the valve body. Removal of the bonnet allows access to the valve chamber for replacement of the seat, cage, disc or retainer ring.

Check valve

Swing check backflow preventer having check valve with lever arm

A swing check valve for controlling fluid flow, including a valve housing having a port for fluid flow therethrough. A valve assembly is disposed within the valve housing for controlling the fluid flow therethrough, and includes a valve seat communicating with the port. A clapper is pivotally mounted in the valve housing and moves between open and closed positions. A lever arm is pivotally mounted on the rocker arm for providing leverage against the rocker arm for positioning the clapper and rocker arm within the valve housing. A spring is captured in the valve housing, and normally urges the clapper into the closed position. A first pivot is carried by the spring for permitting unattached pivotal movement of the spring relative to the cover. A second pivot is carried by the spring for permitting the spring to pivot within the valve housing responsive to movement of the clapper.

Dishwasher with discharge pump and non-return valve

TORSION SPRING CONNECTIONS FOR DOWNHOLE FLAPPER

A torsion spring return system for a valve closure member, preferably for downhole use in an SSV, is described. The closure member or flapper uses torsion springs which can be wrapped circumferentially within the body of the downhole tool, generally following the periphery of the flapper. Downward rotation of the flapper stresses the torsion springs so that subsequently, when a flow tube or other device holding the flapper in one position is released, the torsion springs return the flapper to its seat. The connection between the torsion springs and the pin supporting the flapper is either a universal joint or involves an alignment rod running through the torsion spring, as well as other mechanisms which facilitate stress relief in the connection between the torsion spring and pivot pin.

TILTING NON-RETURN VALVE

Washing machine crockery equipped with a system of draining for non-return valve

La cuve de lavage (3) de la machine, dont le fond est relié à un puisard de collecte (4), et dans lequel s'étend le conduit de sortie (8) d'une pompe de vidange (6), est pourvu d'un clapet de non retour (11) accessible depuis l'intérieur de la cuve de lavage. Le clapet comprend un corps (12) en forme de boîte réalisé d'un seul tenant avec le conduit de sortie (8), réalisé à son tour d'un seul tenant avec le puisard (4). Le clapet (11) présente un organe d'obturation à membrane (18) flexible, profilé avec une languette fixée à une saillie (21) réalisée d'un seul tenant avec le corps (12) en forme de boîte. Une nervure (22) d'un couvercle de fermeture (13) du corps (12) en forme de boîte est maintenue en contact avec la saillie (21), pour bloquer la membrane (18) en position. Applications: électroménager.

HOUSE AND RUNNING TRAP.

Flapper return spring arrangement

The closure member or flapper uses torsion springs 56,58 which can be wrapped circumferentially generally following the periphery of the flapper. Downward rotation of the flapper stresses the torsion springs during opening so that the torsion springs can return the flapper to its seat. The mechanism for stressing the torsion springs 56,58 may comprise tabs 66,68 which act as levers to apply a torsional force to the springs. In this embodiment further tabs are provided at the opposite ends of the springs to secure the springs to the base of the valve. Alignment rods 70,72 extend through the springs and are secured to the base by pins. Alternatively a universal joint (96, figure 5), or half a universal joint, may be mounted between one end of each spring and a pin of a hinge of the flapper.

Centreline flow valve

A valve (10) is disclosed. The valve (10) has an inclined valve seat (14) defining a fluid aperture (18), and a valve head (20) for contact with the valve seat (14) for closure of the fluid aperture (18). A lever arm (22) is attached to the valve head (20). There are biasing means (32) operatively coupled to the lever (22) arm for urging the valve head (20) into contact with the valve seat (14), the biasing means (32) being arranged to provide decreased biasing on opening of the valve head (20) relative to the fluid aperture (18).

WAFER CHECK VALVES

ANCHOR VALVE FOR SECURITY

An anchor valve for security is disclosed. The anchor valve includes a check valve with a flapper for preventing a contaminant from entering the fluid supply system. Contaminants that are outboard of the anchor valve are unable to pass by and are expelled when the fluid supply valve is opened. The anchor valve may include an access cover for maintenanc e and inspection of the flapper and the check valve.

TOP-ENTRY CHECK VALVE HAVING SPRING RETAINER

A top-entry check valve has a valve chamber containing a seat, cage, disc and utilizes a spring retainer to prevent movement of the seat, cage and disc in the downstream direction. A removable bonnet covers an access opening the valve chamber. The seat and cage are a unitary structure for ease in replacing the seat and cage. An annular shoulder in the valve body prevents movement of the seat, cage and disc in the upstream direction. The spring retainer is secured in the valve body by engagement with a lug in the valve body, the unitary seat and cage, the access opening in the valve body and the bonnet. Removal of the bonnet allows access to the valve chamber for replacement of the seat, cage, disc or spring retainer.

УЛУЧШЕННЫЙ ПОДВОДНЫЙ ЗАПОРНЫЙ КЛАПАН

... 1. Клапан, в частности запорный клапан (100), для регулирования потока текучей среды, содержащий: корпус (102), формирующий внутреннюю полость для прохождения через нее потока текучей среды; запирающий элемент (101) внутри полости, который выполнен с возможностью перемещения между первым положением (положением закрытия) и вторым положением (положением открытия); крышку (200), которая выполнена с возможностью быть установленной на корпусе (102) и снятой с него, чтобы соответственно закрывать и открывать проем в корпусе (102), через который указанная полость может сообщаться со средой, окружающей клапан, отличающийся тем, что при снятии крышки (200) с корпуса (102) одновременно из клапана извлекается также и запирающий элемент (101).2. Клапан (100) по п. 1, отличающийся тем, что запирающий элемент (101) соединен с возможностью вращения с частью (209) крышки (200), которая отходит от крышки в направлении внутренней полости корпуса (102).3. Клапан по любому из пп. 1 и 2, отличающийся тем, что ...

Check valve for vacuum sewage pipe and vacuum sewage system

The present invention provides a check valve (10) for use in a vacuum sewage pipe (1). The check valve (10) includes a body having a sewage inlet (12) and a sewage outlet (13) to be coupled to the vacuum sewage pipe (1), a flap valve element (22) disposed in the body and rotatably supported by a shaft (21), and a closing mechanism (30). The closing mechanism (30) can keep the flap valve element (22) in a closed state so as to allow the flap valve element (22) to function as a gate valve. The closing mechanism (30) can also limit an opening degree of the flap valve element (22) so as to allow the flap valve element (22) to function as a check valve (10).

SWING CHECK VALVE

SWING CHECK VALVE A swing check valve which includes a valve body having an inlet and outlet. A recess in the valve body designed to hold a seal ring and a check valve disc swingable between open and closed positions. The disc is supported by a high strength wire secured at one end in a support spacer pinned through bearing blocks fixed to the valve body and at its other end in a groove formed on the outer peripheral surface of the disc. The parts are designed and chosen such to provide a lightweight valve disc which is held open by minimum velocity of fluid flowing through the valve which thus reduces oscillations and accompanying wear of bearings supporting the valve operating parts.

STRAINER.

TOP-ENTRY CHECK VALVE HAVING RETAINER RING

SWING CHECK VALVE

A check valve has a valve body with an annular seat surrounding the duct and a flap member pivotally mounted on the valve body so as to pivot about an axis transverse to the duct from an open position to a closed position pressing against the seat. The flap member includes a circular flap plate with a rigi d backer plate and a front resilient layer carried on a pivot mounting bracket having a rigid mounting plate generally parallel to the backer plate. The backer plate and the mounting plate each have a central hole therethrough and are connected by an integral body molded from a resilient elastomeric material to form the front resilient layer, a back stopper portion and a connecting neck portion arranged so as t o provide resilient flexing movement between the flap plate and the mounting bracket. The mounting bracket is carried on a shaft with a pair of coil springs house d outside the body so that broken spring parts do not enter the fluid in the housing.< /SDOAB> ...

CHECK VALVE FOR VACUUM SEWAGE PIPE AND VACUUM SEWAGE SYSTEM

The present invention provides a check valve for use in a vacuum sewage pipe. The check valve includes a body having a sewage inlet and a sewage outlet to be coupled to the vacuum sewage pipe, a flap valve element disposed in the body and rotatably supported by a shaft, and a closing mechanism. The closing mechanism can keep the flap valve element in a closed state so as to allow the flap valve element to function as a gate valve. The closing mechanism can also limit an opening degree of the flap valve element so as to allow the flap valve element to function as a check valve.

Valve

SIPHON-TRAP.

Check Valve

... 1,193,359. Valves. GRAY TOOL CO. 22 Aug., 1968 [29 Nov., 1967], No. 40262/68. Heading F2V. A valve includes a housing 14, Fig. 2, having a through passageway 36 with a chamber 22 delimited at one end by a radially directed annular seat, a valve disc 58 having two aligned trunnions 60 laterally offset from a diameter of the disc and received in slots 32, 34 axially longer than the diameter of the trunnion, sockets 28, 30 communicating with the slots and containing compression springs 92 resiliently pressing the trunnions upstream against the housing, and further spring means 78 resiliently pressing the disc against the seat, whereby upstream fluid flowing against the disc moves the disc downstream by compressing the springs 92 and rotates the disc against the restoring force of the further spring means 78. The latter may be made from Inconel (Registered Trade Mark) and has a tip 88 connected by lateral coils to horizontal legs received in parallel grooves in the upper face of the disc 58 ...

SWING CHECK VALVE

ANCHOR VALVE FOR SECURITY

An anchor valve for security is disclosed. The anchor valve includes a check valve with a flapper for preventing a contaminant from entering the fluid supply system. Contaminants that are outboard of the anchor valve are unable to pass by and are expelled when the fluid supply valve is opened. The anchor valve may include an access cover for maintenance and inspection of the flapper and the check valve.

DISHWASHER WITH DISCHARGE PUMP AND NONRETURN VALVE

... "DISHWASHER WITH DISCHARGE PUMP AND NONRETURN VALVE" A dishwasher with a wash tub (3) connected on the bottom to a collection well (4) into which extends the outlet duct (8) of a discharge pump (6) fitted with a nonreturn valve (11) accessible from the inside of the wash tub. The valve consists of a box-like housing (12) made in one piece with the outlet duct (8), in turn made in one piece with the well (4). The valve (11) has a flat flexible-membrane plug (18) with a tail (19) hooked to a peg (21) made in one piece with the boxlike body (12). A protrusion (22) of the cover (13) for the box-like body (12) is in contact with the peg (21) to block the membrane (18) in position.

TILTING NON-RETURN VALVE

Check valve for a self-priming pump

A check valve of the flapper type structured for use in a self-primer pump is structured for attachment to the pump casing in a manner that facilitates servicing of the check valve, and includes securement means that are positioned external to the casing and a flapper that is located through an opening of the casing in a manner that enables the servicing of the valve without dropping the flapper or the hardware into the interior of the pump.

Check valve for vacuum sewage pipe and vacuum sewage system

CENTRELINE FLOW VALVE

A valve (10) is disclosed. The valve (10) has an inclined valve seat (14) defining a fluid aperture (18), and a valve head (20) for contact with the valve seat (14) for closure of the fluid aperture (18). A lever arm (22) is attached to the valve head (20). There are biasing means (32) operatively co upled to the lever (22) arm for urging the valve head (20) into contact with the valve seat (14), the biasing means (32) being arranged to provide decre ased biasing on opening of the valve head (20) relative to the fluid apertur e (18).

CHECK VALVE

A top entry check valve including a valve body with an access port and clapper assembly with a compressible hanger positioned in alignment with the access port. The compressible hanger comprises a plate member stamped from a sheet of metal having at least one dimple formed in one of the upper side and the lower side and a corresponding protuberance formed on an opposing side so as to define a compressible area. A clapper is connected to the hanger so that the clapper is movable between a closed position and an open position. A closure member has an abutment surface engaging the hanger so that the hanger body is compressed between the closure member and the valve body.

CHECK VALVE

A top entry check valve including a valve body with an access port and clapper assembly with a compressible hanger positioned in alignment with the access port. The compressible hanger comprises a plate member stamped from a sheet of metal having at least one dimple formed in one of the upper side and the lower side and a corresponding protuberance formed on an opposing side so as to define a compressible area. A clapper is connected to the hanger so that the clapper is movable between a closed position and an open position. A closure member has an abutment surface engaging the hanger so that the hanger body is compressed between the closure member and the valve body.

QUICK MAINTENANCE UNDERSEA CHECK VALVE

The present invention aims at simplifying maintenance, mounting and disassembly operations which are required with valves, and in particular with check valves. Thus, the present invention proposes a solution according to which the closing element (101) of the valve is rotatably fixed to the valve cover (200) so that said cover and said closing element can be simultaneously mounted back by means of a single operation.

TOP-ENTRY CHECK VALVE HAVING SPRING RETAINER

RENSROR MED BACKVENTILER

Drain line access device

A drain line access device is provided for flushing HVACR drain lines. The device includes a main body having input and outlet connection ports on opposite ends for inline installation to a drain line, a flapper assembly sized and configured for seated placement in an interior cavity of the main body, and a removable top cover. The flapper assembly includes a flapper holder, a flapper, a flapper seat, and a spring hinge for rotatably urging the flapper into the normally raised position. An injection port is provided on the top cover for delivering a flow of pressurized gas or liquid for flushing out a clog in the drain line. In operation, delivery of pressurized gas or fluid into the drain line forces the flapper against the flapper seat, thereby sealing off one of the respective ends of the main body and directing the pressurized gas into the drain line.

Torsion spring connections for a downhole flapper

CHECK VALVE WITH ACCELERATED CLOSURE

A check valve including a valve body and a flapper assembly, the valve body defining an inlet, an outlet, an interior cavity, and a port in the interior cavity; the flapper assembly movable between an open position, providing fluid communication between the inlet and outlet, and a closed position, isolating the inlet from the outlet, the flapper assembly including a resilient body and a spring assembly, the spring assembly configured to bias the flap portion of the resilient body towards the closed position, the spring assembly including a spring and a backing plate mounted on opposite surfaces of the resilient body and configured to increase the stiffness of the intermediate portion of the resilient body.

WASHING MACHINE the CROCKERY EQUIPPED With a SYSTEM OF DRAINING HAS NON-RETURN VALVE.

Anchor valve for security

An anchor valve for security is disclosed. The anchor valve includes a check valve with a flapper for preventing a contaminant from entering the fluid supply system. Contaminants that are outboard of the anchor valve are unable to pass by and are expelled when the fluid supply valve is opened. The anchor valve may include an access cover for maintenance and inspection of the flapper and the check valve.

Swing-type check valve assembly retained within a valve housing by abutting engagement with a valve cover and a port of the valve housing

A swing-check valve for controlling fluid flow includes a valve housing and a valve assembly that engages a removable cover of the valve housing for rigid positioning of the valve assembly within the interior of the valve housing when the cover is mounted to the housing. Moreover, the valve assembly includes a valve seat subassembly in addition to a clapper subassembly and a spring subassembly. The valve seat subassembly includes a valve seat that is frictionally disposed within a port of the valve housing for controlling fluid flow therethrough when the cover is fastened to the valve housing. The clapper subassembly includes a clapper pivotal between a first position in engagement with the valve seat for blocking fluid flow through the port and a second position for permitting fluid flow through the port. The spring subassembly includes a spring and a spring base engageable with the clapper subassembly for urging the clapper into the first position. In one embodiment, the clapper subassembly ...

CHECK-VALVE.

Rückschlagventil

Rückschlagventil (1) zum selbsttätigen Sperren einer fluiddurchströmbaren Leitung bei einer Strömungsrichtungsumkehr enthaltend ein einen Strömungsweg definierendes Ventilgehäuse (2) mit zwei Anschlussstutzen (2.1) und einem dazwischen angeordneten Ventilsitz (2.2) und eine im Ventilgehäuse (2) montierte Klappenbaugruppe (3) enthaltend einen mit dem Ventilsitz (2.2) zusammenwirkenden Absperrkörper (3.1), eine Lagereinrichtung (3.2) zum schwenkbaren Lagern des Absperrkörpers (3.1) im Ventilgehäuse (2), derart, dass der Absperrkörper (3.1) zwischen einer Offenstellung, in der der Strömungsweg freigegeben ist, und einer Schließstellung, in der der Absperrkörper (3.1) am Ventilsitz (2.2) dichtend anliegt, bewegbar ist, und einen zwischen dem Absperrkörper (3.1) und der Lagereinrichtung (3.2) verlaufenden Hebel (3.3), der mit dem Absperrkörper (3.1) und der Lagereinrichtung (3.2) verbunden ist, wobei mindestens ein Teil (3.1, 3.2, 3.3) der Klappenbaugruppe (3) von einem Blechumformteil (4, 5 ...

SWING CHECK VALVE

Centreline flow valve

Check valve for a self-priming pump

A check valve of the flapper type structured for use in a self-primer pump is structured for attachment to the pump casing in a manner that facilitates servicing of the check valve, and includes securement means that are positioned external to the casing and a flapper that is located through an opening of the casing in a manner that enables the servicing of the valve without dropping the flapper or the hardware into the interior of the pump.

Torsion spring connections for a downhole flapper

TUBO DEPURADOR

EPURANT PIPE

CHECK VALVE WITH ACCELERATED CLOSURE

A check valve including a valve body and a flapper assembly, the valve body defining an inlet, an outlet, an interior cavity, and a port in the interior cavity; the flapper assembly movable between an open position, providing fluid communication between the inlet and outlet, and a closed position, isolating the inlet from the outlet, the flapper assembly including a resilient body and a spring assembly, the spring assembly configured to bias the flap portion of the resilient body towards the closed position, the spring assembly including a spring and a backing plate mounted on opposite surfaces of the resilient body and configured to increase the stiffness of the intermediate portion of the resilient body.

DISHWASHER WITH DISCHARGE PUMP AND NON-RETURN VALVE

válvula de retenção submarina de manutenção rápida

Check valve

A top entry check valve including a valve body with an access port. A compressible hanger body engages a portion of the valve body and is positioned in alignment with the access port of the valve body. A clapper is connected to the hanger body so that the clapper is movable between a closed position wherein the clapper engages a valve seat to occlude the passage of fluid through the fluid flow passage and an open position wherein the clapper is moved away from the valve seat to permit passage of fluid through the fluid flow passage. A closure member is connected to the valve body to close the access port of the valve body. The closure member has an abutment surface engaging the hanger body so that the hanger body is compressed between the closure member and the valve body.

Sewer trap

Torsion spring connections for a downhole flapper

Check valve for a self-priming pump

A check valve of the flapper type structured for use in a self-primer pump is structured for attachment to the pump casing in a manner that facilitates servicing of the check valve, and includes securement means that are positioned external to the casing and a flapper that is located through an opening of the casing in a manner that enables the servicing of the valve without dropping the flapper or the hardware into the interior of the pump.

Spring return check valve

A resilient disc check valve with a spring return mechanism is provided. The spring return mechanism is contained entirely within the valve body. The spring return mechanism is in the form of a leaf spring or similar structure which engages a back side of the disc and does not require any attachment to the disc by way of fasteners or other mechanisms.

Check valve

An improved check valve of rigid plastic tubing of inexpensive fabrication. The check valve is made of plastic tubing into which a chord-like slot is cut in one embodiment and into which is dropped in the process of manufacture a valve support arm to which is connected a swinging valve member of a plate-like construction. The interior of the plastic tubing which forms the valve housing has an interior ring-like valve seat against which the valve member can seat in one direction of fluid flow. In the reverse direction of flow the valve member can be pivoted to open the valve. The valve housing is simply closed by a arcuate cover member fitting over the valve support arm. In another embodiment a valve shaft fitted in a chord-like position through the housing may support for rotary movement thereon a valve member having a sleeve receiving the shaft. The valve member is generally circular with a chord-like boundary at one edge which is adapted to seat against a chord-like baffle. In the process ...

QUICK MAINTENANCE UNDERSEA CHECK VALVE

RUECKSCHALGKLAPPE

HYDRANT SHOE WITH BACKFLOW PREVENTION ASSEMBLY

A fire hydrant system relating to protection of a water supply from contamination. The fire hydrant system includes a barrel adapted to communicate at least indirectly with a water supply; a nozzle extending from the barrel; a hydrant valve adapted to controllably regulate communication between the barrel and the water supply; a valve actuator adapted to allow actuation of the hydrant valve; a nozzle cap adapted to at least close off the nozzle opening; and a hydrant shoe in communication with the water supply, the hydrant shoe comprising a backflow prevention assembly, wherein water can flow from the water supply through the hydrant shoe into the barrel at an open position of the backflow prevention assembly disc, and wherein media cannot enter the water supply via the barrel when the backflow prevention assembly disc is in a closed position.

CHECK VALVE

A top entry check valve including a valve body with an access port and clapper assembly with a compressible hanger positioned in alignment with the access port. The compressible hanger comprises a plate member stamped from a sheet of metal having at least one dimple formed in one of the upper side and the lower side and a corresponding protuberance formed on an opposing side so as to define a compressible area. A clapper is connected to the hanger so that the clapper is movable between a closed position and an open position. A closure member has an abutment surface engaging the hanger so that the hanger body is compressed between the closure member and the valve body.

SWING CHECK VALVE

REINIGUNGSROHR

Flowline flapper valve

A check valve assembly has a body having a central cavity intersected by upstream and downstream flow passages. A seat is secured by a threaded engagement in the upstream flow passage. An access bore intersects the cavity and has a support shoulder formed in it. A holder is supported on the support shoulder. A flapper is pivotally secured to the holder and located in the cavity for movement between an open position and a closed position blocking flow through the seat. A straight edge portion in the access bore engages a straight edge portion of the holder to prevent rotation of the holder. A fastener extends through a hole in the support shoulder into engagement with the seat to prevent rotation of the seat.

Top-entry check valve having spring retainer

A top-entry check valve has a valve chamber containing a seat, cage, disc and utilizes a spring retainer to prevent movement of the seat, cage and disc in the downstream direction. A removable bonnet covers an access opening the valve chamber. The seat and cage are a unitary structure for ease in replacing the seat and cage. An annular shoulder in the valve body prevents movement of the seat, cage and disc in the upstream direction. The spring retainer is secured in the valve body by engagement with a lug in the valve body, the unitary seat and cage, the access opening in the valve body and the bonnet. Removal of the bonnet allows access to the valve chamber for replacement of the seat, cage, disc or spring retainer.

WAFER CHECK VALVES

Swing check valve

A check valve has a valve body with an annular seat surrounding the duct and a flap member pivotally mounted on the valve body so as to pivot about an axis transverse to the duct from an open position to a closed position pressing against the seat. The flap member includes a circular flap plate with a rigid backer plate and a front resilient layer carried on a pivot mounting bracket having a rigid mounting plate generally parallel to the backer plate. The backer plate and the mounting plate each have a central hole therethrough and are connected by an integral body molded from a resilient elastomeric material to form the front resilient layer, a back stopper portion and a connecting neck portion arranged so as to provide resilient flexing movement between the flap plate and the mounting bracket. The mounting bracket is carried on a shaft with a pair of coil springs housed outside the body so that broken spring parts do not enter the fluid in the housing.

BACKVENTIL

Flowline Flapper Valve

A check valve assembly has a body having a central cavity intersected by upstream and downstream flow passages. A seat is secured by a threaded engagement in the upstream flow passage. An access bore intersects the cavity and has a support shoulder formed in it. A holder is supported on the support shoulder. A flapper is pivotally secured to the holder and located in the cavity for movement between an open position and a closed position blocking flow through the seat. A straight edge portion in the access bore engages a straight edge portion of the holder to prevent rotation of the holder. A fastener extends through a hole in the support shoulder into engagement with the seat to prevent rotation of the seat.

Check valve

The invention relates to a check valve for blocking a fluid-carrying line in case of reversal of the flow direction, containing a valve housing defining a flow path and having two connecting pieces and a valve seat therebetween, and a flap module mounted in the valve housing and containing a shut-off body interacting with the valve seat, a bearing device for pivotably supporting the shut-off body such that the latter is movable between an open position and a closed position, and a lever extending between the shut-off body and the bearing device and being connected to the shut-off body and the bearing device. For easier manufacturing, the invention proposes that a part of the flap module is formed by at least one sheet-metal shaped part.

Passive valve for attenuation of low frequency noise

A passive valve assembly for an exhaust system is mounted within an exhaust tube. The exhaust tube has a bore that defines an exhaust flow path having a cross-sectional area. One end of the exhaust tube is to be connected to a first exhaust component and a second end of the exhaust tube is to be connected to a second exhaust component such that the exhaust tube forms a sole exhaust path between the first and the second exhaust components. The passive valve assembly includes a vane that is mounted within the bore, and which is moveable between an open position and a closed position. A resilient member biases the vane toward the closed position. When the vane is in the closed position, the vane covers 80% to 97% of the cross-sectional area.

Válvula de retención para regular el flujo de un fluido, para ser utilizada en una línea submarina, comprende un cuerpo principal, un elemento de cierre y una cubierta, donde el elemento de cierre está fijado a la cubierta del cuerpo.

Dishwasher with discharge pump and nonreturn valve

A dishwasher with a wash tub (3) connected on the bottom to a collection well (4) into which extends the outlet duct (8) of a discharge pump (6) fitted with a nonreturn valve (11) accessible from the inside of the wash tub. The valve consists of a box-like housing (12) made in one piece with the outlet duct (8) which, in turn, is made in one piece with the well (4). The valve (11) has a flat flexible-membrane plug (18) with a tail (19) hooked to a peg (21) made in one piece with the box-like body (12). A protrusion (22) of the cover (13) for the box-like body (12) is in contact with the peg (21) to block the membrane (18) in position.

Центробежный лопастной насос и впускной обратный клапан для насоса

1. Центробежный лопастной насос, который содержит корпус с воздушной камерой внутри, входное отверстие, проходящее до воздушной камеры, и обратный клапан, соединенный с входным отверстием и содержащий ограничитель, спиральную пружину, которая закреплена на первой стороне ограничителя и установлена с возможностью смещать вторую сторону ограничителя в сторону седла клапана, а также пористый элемент, расположенный между спиральной пружиной и воздушной камерой и выполненный с возможностью предотвращать прохождение обратного потока жидкости.2. Центробежный лопастной насос по п. 1, в котором обратный клапан установлен между входным отверстием и воздуховодом, проходящим к усилителю тормозов транспортного средства, а обратный поток жидкости включает в себя масло, находящееся в воздушной камере и проходящее в обратном направлении относительно направления воздушного потока, входящего во впускное отверстие.3. Центробежный лопастной насос по п. 1, в котором пористый элемент включает в себя металлическую пену, выполненную с возможностью пропускать воздушный поток к воздушной камере и предотвращать прохождение обратного потока жидкости к ограничителю.4. Центробежный лопастной насос по п. 1, который также включает в себя канал, расположенный перпендикулярно входному отверстию, образуя Г-образную форму, причем пористый элемент со спиральной пружиной расположены внутри указанного канала с возможностью удерживать ограничитель на расстоянии от входного отверстия.5. Центробежный лопастной насос по п. 4, в котором канал включает в себя седло клапана, выступающее внутрь в направлении центральной оси канала и примыкающее РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК F04D 29/24 (13) 151 786 U1 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ТИТУЛЬНЫЙ (21)(22) Заявка: ЛИСТ ОПИСАНИЯ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ 2014117283/06, 29.04.2014 (24) Дата начала отсчета срока действия патента: 29.04.2014 (72) Автор(ы): МОЕТАКЕФ Мохаммад Али (US) (73) Патентообладатель(и): Форд Глобал ...

Heating system

A heating system can include certain pressure sensitive features. These features can be configured to change from a first position to a second position based on a pressure of a fuel flowing into the feature. These features can include, fuel selector valves, pressure regulators, burner nozzles, and oxygen depletion sensor nozzles, among other features.

Piston valve with built in filtration

A control valve includes particle and moisture accumulation inhibiting features. The control valve includes a piston that provides for pressure communication to a back cavity through a tortuous path that settles out particle matter carried within the airflow. Moreover, the piston includes drainage openings that direct moisture out of piston and away from the sealing surfaces.

Combined pump and filter module

A pump and filter module for wind power plants may include a module housing having a receptacle for a pump and a filter device, wherein a plurality of associated lines may be integrated in the module housing.

Tamper-Resistant Water Flow Restriction System

A system and method for installing and removing a flow restrictor assembly in a shower, while prevents tampering with the flow restriction system thus installed. Tampering is prevented by concealing the flow restrictor assembly behind a shower wall, attached directly to a water supply line. The system further prevents tampering by concealing the tool-hole necessary for its removal behind a flow restrictor disk, so that there are no visible means of removing the flow restrictor assembly. The flow restrictor assembly threads onto a showerhead arm and the flow restrictor assembly with the attached showerhead arm threads directly into the water line. When the showerhead arm is unthreaded, the flow restrictor assembly remains connected to the water line by an external screw thread. The flow restrictor must be removed to reveal the tool-hole which may only then be engaged by a tool for removal.

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.

Adjustable Smooth Bore Nozzle

An adjustable nozzle comprising a nozzle body with an inlet, an outlet and a flow chamber having a smooth bore extending between the inlet and the outlet. An elastic water impervious material is in fluid communication with the inlet and is tapered and is able to expand due to its elasticity. An adjustable non-rusting member connected to the nozzle body expands or constricts to either increase or decrease the inner diameter of the nozzle body to adjust the flow rate through the nozzle.

Propellant Flow Actuated Piezoelectric Igniter for Combustion Engines

A propellant flow actuated piezoelectric igniter device using one or more hammer balls retained by one or more magnets, or other retaining method, until sufficient fluid pressure is achieved to release and accelerate the hammer ball, such that it impacts a piezoelectric crystal to produce an ignition spark. Certain preferred embodiments provide a means for repetitively capturing and releasing the hammer ball after it impacts one or more piezoelectric crystals, thereby oscillating and producing multiple, repetitive ignition sparks. Furthermore, an embodiment is presented for which oscillation of the hammer ball and repetitive impact to the piezoelectric crystal is maintained without the need for a magnet or other retaining mechanism to achieve this oscillating impact process.

Flow control assembly

A flow control device for automatically controlling the flow of a fluid at a predetermined rate that is capable of taking measurements of the pressure of the fluid within the device while the device is functioning and that is capable of real-time adjustment of the flow rate is provided. Said device includes a casing having a casing outlet, a piston having a piston inlet and an edge, wherein said piston interfaces with the casing in a manner such that the edge is cooperable with the casing outlet to control the flow of fluid through the device. A biasing member, such as a spring, for biasing the casing with the piston is further included, as is a sensor, such as a pressure transducer, for measuring the pressure within the interior of the casing.

Pressure Relief Valve

A degassing valve in a flexible container is disclosed. The valve includes a generally flat valve seat on a truncated generally dome shaped structure, and the valve seat is raised a height above the valve chamber base surface. A resilient, non-perforated, non-spring-biased diaphragm is inter-engaged upon the valve seat and overlaps the valve seat outer periphery. The valve seat engages a central area of the diaphragm that is not proximate the perimeter of the diaphragm, and the dome shaped structure has a sectional radius greater than the diaphragm radius. A well is recessed into the valve seat in a direction away from the diaphragm by a depth less than the height of the valve seat above the valve chamber base surface.

Thermostatic mixing valve

A thermostatic mixing valve for the mixing of a first and second fluids is disclosed. The thermostatic mixing valve includes a valve body having first and second inlets, and a mixed fluid outlet. The thermostatic mixing valve includes a valve member configured to control the rate of flow of at least the first fluid. The member includes a thermostat in communication with the mixed fluid and a shuttle coupled to the thermostat, configured for movement within a liner, and oriented to adjustably engage the flow of the first fluid through an opening within a wall of the liner, the direction of flow of the first fluid being at least partially transverse with respect to the shuttle. A fluid inlet may include a check valve configured to prevent fluid from flowing out of the valve through the inlet.

Check Valve

The invention relates to a check valve for blocking a fluid-carrying line in case of reversal of the flow direction, containing a valve housing defining a flow path and having two connecting pieces and a valve seat therebetween, and a flap module mounted in the valve housing and containing a shut-off body interacting with the valve seat, a bearing device for pivotably supporting the shut-off body such that the latter is movable between an open position and a closed position, and a lever extending between the shut-off body and the bearing device and being connected to the shut-off body and the bearing device. For easier manufacturing, the invention proposes that a part of the flap module is formed by at least one sheet-metal shaped part.

Check Valve Unit For Solid Ink Reservoir System

A check valve unit is provided for a high-speed phase change ink image producing machine between a reservoir for receiving and holding a volume of melted ink from a source and a receiving unit, which may be a printhead system. The check valve unit includes a plurality of ball elements trapped between upper and lower housings defining a like plurality of inlet and discharge passageways. The passageways are configured to optimize flow of melted ink through the unit during charging of the secondary reservoir. The check valve unit is scalable as to size and number of reservoirs for a particular application. The unit further incorporates features that simplify the manufacturing and assembly process while maintaining optimal performance.

Valve

A valve ( 101 ) that can be used as a pressure limiter, for example in a sanitary supply line. The valve ( 101 ) according to the invention includes a valve housing ( 1 ), a fluid line piece ( 2 ) being provided in the housing interior thereof, the downstream side circumferential edge area thereof forming a valve seat ( 3 ) for a valve body ( 4 ), wherein the valve body ( 4 ) can be displaced between an open position and a closed position, in which closed position the valve body ( 4 ) acts on the downstream circumferential edge area of the fluid line piece ( 2 ), by the pressure of the fluid flowing in through the fluid line piece ( 2 ) on one side, and a downstream side pressure acting on the valve body ( 4 ) opposite to the regular flow-through direction on the other side.

High-temperature jointed assemblies and wear-resistant coating systems therefor

Wear-resistant coating systems suitable for protecting surfaces subjected to contact wear at high temperatures, such as surfaces of an assembly comprising high-temperature components of gas turbine engines. The components have surfaces in wear contact with each other. One of the surfaces has a wear-resistant coating system thereon so as to be in wear contact with the surface of the other component. The wear-resistant coating system contains alternating layers of TiAlN and CrN.

Water treatment system

A water treatment system is provided including a disinfection system, a filter and a turbine generator. A manual pump is positioned downstream of the filter to create negative pressure to draw water through the filter. The manual pump also creates positive pressure to dispense treated water from the outlet of the system. The movement of the water through the system powers the turbine generator. The power generated can be used to monitor a characteristic of the water treatment system.

Flow control device and methods for using same

An apparatus for controlling flow of a fluid includes a closure member, a biasing member applying a biasing force to the closure member, and a sealing member receiving the closure member. A dampener is operatively connected to the closure member and may resist a force applied to the closure member. A fluid seal may be formed when the biasing member presses the closure member against the sealing member. The apparatus may include a wellbore tubular in which the fluid conduit is formed and the closure member and sealing member may cooperate to control fluid flow along the fluid conduit. The apparatus may include an actuator configured to control the force applied to the closure member. The actuator may adjust the biasing force, and/or the dampening force. Also, a controller may control the actuator and may be responsive to a signal generated at a surface location, a signal generated at a downhole location, and/or a signal generated by a sensor.

Pressure regulator with manual shut-off valve

A pressure regulator includes a housing assembly defining a fluid flow path from an inlet end to an outlet end; a plunger having a tubular plunger body supported within the housing assembly for linear movement toward and away from a valve seat in response to fluid pressure at the outlet end. A sleeve is supported within the housing assembly and is engageable with the tubular plunger body, and an actuator collar is supported externally of the housing assembly and operatively attached to the sleeve such that rotation of the actuator collar in one direction from an open position to a closed position produces linear movement of the tubular plunger body, independent of the pressure at the outlet end, into engagement with the valve seat to thereby shut off the flow path within the regulator.

Pressure regulating valve, fuel cell system using same, and hydrogen generating facility

A pressure regulating valve has a first pressure deformation portion which receives a pressure on a fuel demand side, a second pressure deformation portion opposed to the first pressure deformation portion and which receives a predetermined pressure, first and second flow passages, and a communication passage communicating the first and second flow passages with each other. A valve member connects the first and second pressure deformation portions together and has a valve element that closes the communication passage when moved toward the second pressure deformation portion. When the pressure on the fuel demand side is lower than a predetermined value, the valve element does not close the communication passage, but when the pressure on the fuel demand side is equal to or higher than the predetermined value, the valve element closes the communication passage.

Check Valve

A valve is provided. The valve includes a flapper member. A barrel is coupled to the flapper member, the barrel having an interior volume and at least one movable vane within the interior volume. A shaft member is rotationally coupled to the barrel, the barrel having at least one stationary vane disposed within the interior volume.

Cooling system assembly for a crop sprayer

The crop sprayer includes a cooling system that comprises a plurality of heat exchange units attached to a housing. The housing defines an air chamber. The heat exchange units are mounted over openings defined in the walls of the housing surrounding the chamber. A fan is mounted over fan opening defined in the housing to draw air from the chamber and create a pressure drop in front of the coolers. The pressure drop causes air to be drawn through the heat exchange units into the chamber.

Pressure relief valve

A pressure relief valve for use submerged in a body of water includes a first seal element in a water-filled chamber having an outlet into the body of water. In addition, the pressure relief valve comprises a spring in a water-filled chamber biasing the first seal element into sealing engagement with a second seal element and forming a seal until the pressure opposing the seal equals or exceeds a predetermined pressure.

Pressure regulator with remotely controlled shut-off valve

A pressure regulator includes a housing assembly defining a main fluid flow path from an inlet end to an outlet end. A tubular plunger body is supported within the housing assembly for linear movement toward and away from a valve seat in response to fluid pressure at said outlet end. An actuator sleeve is supported within the housing assembly and engaged with the tubular plunger body, and a pressure chamber defined in part by a shut-off diaphragm extends between the housing assembly and the actuator sleeve. A fluid port is arranged to supply pressurized fluid to the pressure chamber to thereby produce linear movement of the actuator sleeve and the tubular plunger body independent of the pressure at said outlet end, moving the tubular plunger body into engagement with the valve seat to shut off the flow path.

Water Filtration System

A water filtration system is provided that includes a filter section, a tank section, a pump section, a housing section and a dispensing section. The filter section includes a high-pressure water filter disconnected from a source of tap water. The tank section includes an outer tank member and an inner tank member fluidly connected to the filter section. The pump section is fluidly connected to the filter section via a first conduit for pumping water at a high pressure through the filter and is fluidly connected to the outer tank member via a second conduit for drawing unfiltered water from the outer tank member. The housing section houses at least one of the filter section, the tank section and the pump section. The dispensing section is fluidly connected to the inner tank member for dispensing filtered water.

Flowline flapper valve

A check valve assembly has a body having a central cavity intersected by upstream and downstream flow passages. A seat is secured by a threaded engagement in the upstream flow passage. An access bore intersects the cavity and has a support shoulder formed in it. A holder is supported on the support shoulder. A flapper is pivotally secured to the holder and located in the cavity for movement between an open position and a closed position blocking flow through the seat. A straight edge portion in the access bore engages a straight edge portion of the holder to prevent rotation of the holder. A fastener extends through a hole in the support shoulder into engagement with the seat to prevent rotation of the seat.

Aseptic connection of separation or reaction systems

A separation or reaction unit ( 1; 1′; 81; 81′; 101 ) and a method for aseptically connecting such units. The separation or reaction unit ( 1; 1′; 81; 81′; 101 ) comprises at last one fluid inlet ( 3 a, 3 b, 5 a, 5 b; 3 a′, 3 b′, 5 a′, 5 b ′; 85 a, 85 b; 103 a, 103 b ) and at least one fluid outlet ( 3 a, 3 b, 5 a, 5 b; 3 a′, 3 b′, 5 a′, 5 b′; 85 a, 85 b; 103 a, 103 b ). At least one of the inlet or outlet is sealed by at least one film ( 7, 9; 11; 87 a, 87 b; 107 a, 107 b ) and the contact surface between the film and the separation or reaction unit is aseptic. The films are adapted to be mated with a corresponding film on another separation or reaction unit or on a fluid distribution unit ( 20; 57; 61 ) which the separation or reaction unit possibly should be connected with and said mated films are adapted to be pulled out together two and two after mating such that corresponding fluid inlets/outlets on the two connected units are mated aseptically.

Removal of Sediment from a Container Holding Liquid

A sediment removal assembly is provided for removal of sediment in a container. The assembly has a container seal for sealing an opening to the container. The container seal is formed with a seal body with a flow through passageway between opposite ends of the seal body, and a valve arrangement with a valve member normally spring biassed to close said passageway. One end of said seal body is adapted to sealingly engage said container at an opening thereof to close the opening. The assembly also has a sediment reservoir adapted for removable sealing engagement with the opposite end of the seal body and in communication with the flow through passageway so that upon opening the valve member.

Screening method and apparatus

An apparatus ( 25 ) for use in screening a liquid and solids mixture feed ( 2 ) comprises a conduit ( 18 ), including a screening portion ( 22 ) that is formed and arranged to divide a liquid and solids mixture feed flowing through the conduit. The feed ( 2 ) is divided into a first, cleaned stream (C 1 ) comprising liquid and solid particles of below a selected size limit, and a second, concentrated, stream ( 24 ) comprising liquid, and particles above the selected size limit. The apparatus ( 25 ) may be a stand alone module, part of a system with other solids and liquids separating equipment or an integral part of a solids and liquid separator such as a shale shaker. Methods of using the apparatus ( 25 ) are also described.

Pressurized gas containing system

A pressurized gas containing system has a cowling and mounting ring which supports a valve and regulator on a cylinder containing gas under pressure.

Apparatus and method for a submersible pump system and linear electrofusion

This invention relates generally to a high volume, buoyancy controlled submersible pump assembly designed to sit on the bottom of a body of water or other liquid substance and move a large volume of water or liquid substance. Alternatively, the submersible pump assembly is capable of achieving and maintaining neutral buoyancy or near neutral buoyancy in a particular body of water or liquid substance. The neutrally buoyant version includes the means to maintain the pump assembly at a given depth without requiring it to sit on the bottom of the body of water or other liquid substance. This invention also relates to linear electrofusion for thermoplastic components.

Check valve

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

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.

Reactant delivery for engine exhaust gas treatment

A reactant delivery system for engine exhaust gas treatment may include a tank in which a reactant is received, a pumping device, a pressure relief device, and a reactant distribution device. The pumping device may have an inlet disposed within the interior of the tank to receive the reactant, and an outlet through which the reactant is discharged. The pressure relief device may have an inlet in fluid communication with the outlet of the pumping device, a primary outlet to discharge the reactant under pressure to a downstream location, and a bypass outlet through which at least some of the reactant discharged from the pumping device is selectively discharged. And the reactant distribution device may be in fluid communication with the bypass outlet of the pressure relief device and have a plurality of outlets to distribute the reactant to at least two different locations within the tank.

Valve designed to indicate whether or not fluid is passing

The subject of the present invention is a valve for extracting, by pumping, a fluid contained in a space, said valve comprising: a) a main body having a first opening for the passage of said fluid during pumping, and b) an indicator means configured to indicate whether or not the fluid is passing through the first opening.

Switching valve to control a fluid subject to high pressure

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

Pressure Release Valve Assembly for Pressure Cooker

A pressure release valve assembly for a pressure cooker including a pressure intake unit provided inside of (or under) the lid of a pressure cooker and a pressure control unit connected to the pressure intake unit and provided outside of the lid. The pressure intake unit includes a pressure outlet tube, a connecting plug substantially in a truncated conical shape and connected to the pressure outlet tube with the connecting plug in between, a pressure intake tube connected to the pressure outlet tube, and a filtering cap attached to the pressure intake tube; and the pressure control unit includes a cylindrical pressure release casing, a tubular pressure control element threadedly connected to the inside of the pressure release casing, a valve plunger provided inside the tubular pressure control element, and a pressure spring installed between the pressure control element and an externally expanding supporting flange of the valve plunger.

Pressure Release Valve

A pressure release valve including a holder element provided on the outside of the lid of a pressure cooker, a body packing disposed inside the holder element, a pressure release tube provided in the lower inside portion of the body packing, a valve plunger disposed in the body packing and comprising a shank portion and a beveled portion which is at the lower end of the shank portion and set on the upper end of the pressure release tube so as to allow the interior of the pressure release tube to be an empty space, a coil spring mounted on the valve plunger, a lock nut connected to the holder element, and a filtering cap provided fixedly or non-fixedly within the lock nut.

Pressure relief valve with orifice

A pressure relief valve includes a housing including an inlet chamber adapted to be in communication with an outlet of a pump and an outlet chamber adapted to be in communication with a pump inlet. The housing includes a bore having a first end in communication with the inlet chamber and a main spill aperture in communication with the bore and the outlet chamber. A piston includes an orifice and an axially spaced apart aperture. The piston is axially moveable within the bore between a first position whereat the piston seals the inlet chamber from the outlet chamber, a second position whereat the inlet and outlet chambers are in fluid communication with one another via only the orifice, and a third position whereat the inlet and outlet chambers are in fluid communication with one another via the orifice and the aperture. A spring biases the piston toward the first position.

Acoustophoretic multi-component separation technology platform

A system having improved trapping force for acoustophoresis is described where the trapping force is improved by manipulation of the frequency of the ultrasonic transducer. The transducer includes a ceramic crystal. The crystal may be directly exposed to fluid flow. The crystal may be air backed, resulting in a higher Q factor.

Quick-release vacuum pump

A quick-release vacuum pump. A vacuum pump part has a cylindrical hollow area extending between an inlet and an outlet and nozzles disposed in series inside the hollow area and have slots therein, both ends of the nozzles communicating with each other between the inlet and the outlet. A release part includes a support tube formed above a suction port, a skirt-type check valve to be moved up and down by air pressure to open and close the support tube, and a pressure chamber formed in a passage communicating with the suction port and passes by a valve skirt. A filter material disposed between the suction port and the support tube allows discharge air to pass through upward when the pump part operates, and is cleaned by air supplied to the suction port through the support tube from the pressure chamber when the pump part stops operating.

Airflow check valve

A check valve for use in an air flow line to convey pressurized air to unload a tank trailer, railroad car, or other conveying facility. It includes a housing, having a valve seat, a check valve for seating upon the valve seat, a bushing holding the valve stem for the check valve, with the bushing having a channel therein, through which the valve stem locates, and contains a spring therein that is totally encapsulated within the bushing chamber, during usage. The housing is internally contoured to enhance the flow of pressurized air therethrough.

Compact check valve for aircraft galley plumbing system

A check valve for an aircraft galley plumbing system comprises a valve body including an inlet for a potable water supply line, and first and second outlet ports leading to a distribution manifold. In a preferred embodiment, quick disconnects that include reverse flow inhibitors seal the valve's output ports. A vertical channel extends through the valve body for draining water through the valve, which is coupled to a pressure line connection port that exerts pressure from the aircraft's pressure system. A piston reciprocating across the vertical channel and biased by a spring is in fluid communication with the pressure line connection port, such that when a water pressure is introduced from a water pressure line to the pressure line connection port of sufficient to collapse said spring, the piston blocks said channel, and when the water pressure is insufficient to collapse said spring then the piston retracts to open said channel, allowing fluid to pass thereinthrough.

Union Coupling With Removable Screen

A union coupling having a removable screen is disclosed. The union coupling includes a pipe joint, a fitting that receives the screen, and a collar which clamps the fitting to the pipe joint. In one form, the fitting has an inner surface that defines a passage through the fitting and a pocket formed in the inner surface. The screen has a transverse extension that is received at least in part in the pocket with engagement of the transverse extension and pocket restricting passage of the screen past a predetermined position in the passage. A union coupling having a fitting comprising a fitting body with an outward flange and a shoulder element with an outward flange is also provided. The shoulder element is connected to the fitting body to captivate a collar between the outward flanges of the fitting so that the collar does not become separated from the fitting body. A method of assembling a union coupling is also provided.

Active hydraulic fluid level control for an automatic transmission

A hydraulic control system for a transmission includes a sump tank, a front cover, a wall, and a flow control valve. The sump tank is attached to a bottom end of the transmission. The front cover includes an overflow tube and a hydraulic fluid input. The wall hydraulically separates the sump tank and the front cover. The flow control valve is disposed in the wall between the sump tank and front cover. The flow control valve is open when the transmission is going through an extreme maneuver and requires a greater amount of hydraulic fluid in the sump tank and the flow control valve is closed during normal transmission operation.

Compliant Dart-Style Reverse-Flow Check Valve

An apparatus usable with a well includes a gas lift valve having a check valve arrangement located between an annulus and a passageway of a tubing. The check valve arrangement is adapted to selectively allow fluid flow from the check valve arrangement from an inlet side of the check valve arrangement to an outlet side of the check valve arrangement, and is biased to prevent a leakage flow through the check valve arrangement from the outlet side to the inlet side. The check valve arrangement is defined by a valve element movable into and out of engagement with a valve seat wherein one of the valve element and the valve seat has a first sealing structure engageable with a second sealing structure on the other of the valve element and the valve seat. At least one of the first and second sealing surfaces include at least one pair of sealing members.

Method and Apparatus for Damping an Actuator on a Fluid Regulator

A damped actuator for a fluid regulator includes a diaphragm disposed in a housing, and a damper arranged to stabilize movement of the diaphragm in response to changes in pressure inside the housing. The damper includes a ball check valve arranged to allow air to exhaust out of the housing when above a preselected pressure. The damper may include interchangeable components so as to be modifiable to have different set point pressures to achieve different backpressures inside the housing.

Water tank of water-cooled heat dissipation system

A water tank includes a box, an air valve body, a valve core, a cap, and an elastic element. The box defines an accommodating space and a vent communicating with the accommodating space. The air valve body is extended out from the box and adjacent to the vent. The valve core is mounted to the valve body to airproof the vent, and comprises a first end inserted into the accommodating space through the vent and a second end opposite to the first end. The elastic element is arranged between the cap and the valve core. The valve core will open the vent to deform the elastic member and allow heated air in the accommodating space to leak out of the accommodating space through the vent, in response to an air pressure in the box is greater a reference air pressure.

Air admittance valve preventing mephitis overflow

An air admittance valve preventing mephitis overflow, having a main body with an air entry guide base defining an air entry guide; a pivot support; and a valve seat. A sealing valve group having a sealing valve body that defines a recess; a flexible member; a pivot housing; and a pivot. The valve seat is located about the air entry guide. The pivot is located in the pivot housing and the pivot support, and the pivot is located along, or adjacent to, the center of gravity of the sealing valve body. The flexible member is at least partially located in the recess and abuts the main body; and when the air admittance valve is closed, the sealing valve body abuts the valve seat.

Linear compressor

A linear compressor is provided that may include a shell in which a discharge port is provided, a cylinder disposed in the shell to define a compression space for a refrigerant, a piston disposed to be reciprocated in an axial direction within the cylinder, a discharge valve disposed on or at one side of the cylinder to selectively discharge the refrigerant compressed in the compression space, the discharge valve including an insertion protrusion, and a valve spring coupled to the discharge valve to provide a restoring force to the discharge valve. The valve spring may include a spring body having a central portion defined at a portion corresponding to a center of the cylinder, and an insertion hole defined in the spring body. The insertion hole may be coupled to the insertion protrusion of the discharge valve. The central portion of the spring body may be spaced apart from a central portion of the insertion hole.

DYNAMIC VALVE SEAL HAVING RETAINING FEATURES

A dynamic seal assembly is disclosed for use in a valve having an upstream pressure side and a downstream pressure side, the dynamic seal assembly including an annular seal member having a generally C-shaped cross-section and including opposed upstream and downstream legs defining an internal cavity with an opening facing toward the upstream pressure side of the valve, wherein the upstream leg has a radial length that is greater than a radial length of the downstream leg and includes a retaining foot that extends angularly away from the upstream leg in an upstream direction at an angle of between about 0° and 90°, and a metallic spring is disposed within the internal cavity of the seal member for providing a constant sealing force to the seal member. 1. A dynamic seal assembly for a valve having an upstream pressure side and a downstream pressure side , the dynamic seal assembly comprising:a) an annular seal member having a generally C-shaped cross-section and including opposed upstream and downstream legs defining an internal cavity with an opening facing toward the upstream pressure side of the valve, wherein the upstream leg has a radial length that is greater than a radial length of the downstream leg and includes a retaining foot that extends angularly away from the upstream leg in an upstream direction at an angle of between about 0° and 90°; andb) a metallic spring disposed within the internal cavity of the seal member for providing a constant sealing force to the seal member.2. A dynamic seal assembly as recited in claim 1 , wherein the seal member is formed from PTFE.3. A dynamic seal assembly as recited in claim 1 , wherein the spring member is a helically wound metallic spring.4. A dynamic seal assembly as recited in claim 1 , wherein the opening of the internal cavity faces inward from an inner periphery of the seal member. This application is a Divisional of U.S. patent application Ser. No. 14/605,062, filed Jan. 26, 2015. The contents of this ...

Dual flow check valve for positive crankcase ventilation system

A dual flow check valve includes a valve body having an inner valve cavity, a first valve opening, and a second valve opening. The dual flow check valve further includes a seal disposed within the valve body. The seal is operatively coupled within the valve body such that the seal is configured to move relative to the valve body between an open position, in which the seal allows the gas to flow between the first and second valve openings through the inner valve cavity, and a closed position, in which the seal inhibits the gas and the liquid from flowing through the inner valve cavity from the first valve opening to the second valve opening.

BYPASS FOR A SUSPENSION DAMPER

A vehicle suspension damper comprises a cylinder and a piston assembly including a damping piston along with working fluid within the cylinder. A bypass permits fluid to avoid dampening resistance of the damping piston. A fluid path through the bypass is controlled by a valve that is shifted by a piston surface when the contents of at least one predetermined volume is injected against the piston surface which acts upon the valve. In one embodiment, the bypass is remotely operable. 1a cylinder containing a fluid and a damping piston operable to travel within said fluid in said cylinder, said vehicle suspension damper further including a passageway through said damping piston and limiting a flow rate of said fluid through said damping piston in at least one direction;a bypass pathway in fluid communication with said cylinder, said bypass pathway providing a path for said fluid to travel between a first side and a second side of said damping piston; a valve body;', 'a valve piston housed within said valve body, said valve piston having a valve piston surface;', 'a shaft extending from said valve piston;', 'a valve member coupled to said shaft, said valve member telescopically mounted to said shaft and said valve member movable with respect to said shaft wherein a gap is formed between said valve member and an end of said shaft;', 'a spring member mounted on said shaft between said valve member and said valve piston, said spring member biasing said valve member away from said valve piston; and', 'a manual pre-load adjustment coupled to said valve piston, said manual pre-load adjustment configured to adjust a position of said valve piston; and, 'a valve for controlling a flow of said fluid through said bypass pathway, said valve comprisingat least one predetermined fluid volume in selective fluid communication with said valve piston surface for causing displacement of said valve piston; wherein the valve is remotely controllable.. A vehicle suspension damper comprising: ...

System and apparatus for controlling fluid flow in drainage systems

A fluid control system to control fluid flow within a drainage system is provided that includes a fluid control device configured to couple to an interior wall of a cylindrical structure of the drainage, and a coupling mechanism configured to couple the fluid control device to the interior wall, wherein, while in a resting state, the fluid control device is configured to at least partially cover an aperture of the interior wall. When fluid contacts the fluid control device at a flow rate of at least a flow threshold, the fluid control device is configured to at least partially uncover the aperture of the interior wall. The fluid control device has a spherical shape, wherein a diameter of the fluid control device has a diameter that is greater than or equal to a diameter of the aperture.

Pressure relief valve and secondary spring force containment assembly

A valve having secondary spring force containment includes a valve body featuring an opening with a valve closure member sized to close the opening. A stem has a first end connected to the valve closure member. A proximal spring seat is positioned adjacent to the valve body, A distal spring seat is mounted on the second end of the stem. A spring is positioned between the proximal and distal spring seats so that the valve closure member is urged into a position where the valve body opening is closed. A hollow rod is attached between the proximal and distal spring seats to provide secondary spring force containment with the stem passing through the hollow rod.

Guide vane check valves

Guide vane check valves, guide vane check valve assemblies, and poppets for guide vane check valve assemblies are disclosed. A guide vane poppet includes an elongate central core configured to form a fluid seal with a valve body of the check valve assembly. The guide vane poppet additionally includes an elongate outer skirt and at least one guide vane radially extending between the elongate central core and the elongate outer skirt. A check valve assembly includes a valve body with a central cavity, an inlet to the central cavity, an outlet from the central cavity, and a spring seat, and further includes a spring and a poppet. The spring is oriented to press against the poppet and to urge a poppet-side sealing surface of the poppet into sealing engagement with a body-side sealing surface of the valve body.

Check valve

A check valve is provided for use with variable frequency drives and other applications. In one aspect, the check valve provides a poppet guided by a poppet guide in at least two locations to ensure stability between fully open and fully closed positions. In another aspect, the check valve includes a poppet guide adapted to receive a poppet in a stem receiving channel, the stem receiving channel including guide vanes engaging the poppet and auxiliary channels for self cleaning. The check valve may also include a valve seal. In one embodiment, the valve seal is an o-ring received by a poppet head, based of the poppet guide and valve seat. The valve seat and/or the base may include expansion channels to receive a portion of the valve seat during compression when the check valve is in a closed position.

Automatic Pacing System for a Baby Bottle

A baby bottle, an insert for a baby bottle, a baby bottle including an insert, and a method of feeding an infant that serves to pace the infant's feeding rhythm. Generally, these devices and methods will be of use for a preterm infant who lacks coordination of the suck-swallow-breathe synchrony, but can also be used with full term infants who can benefit from rigid control of the flow of milk from a bottle, this includes, but is not limited to, infants with gastroesophageal reflux who can require pacing of feeds to allow for gastric emptying. The device generally cues the infant to swallow and breathe after each 1-4 sucks by stopping the flow of the fluid from the bottle after the infant has sucked sufficiently or a predetermined period of time has passed. Once the baby breathes or a period of time passes, the bottle resets for the next repetition. The device also serves to consistently slow the flow of milk during oral feeding. 1. A baby bottle for providing paced feeding , the bottle comprising:a storage chamber, containing a first amount of fluid;a feeding reservoir, containing a second amount of said fluid smaller than said first amount, said feeding reservoir in fluid communication with said storage chamber;a nipple in fluid communication with said feeding reservoir; anda pump for moving fluid from storage chamber to said feeding reservoir;wherein when an infant sucks on said nipple, they can only obtain said second amount of said fluid until they cease sucking at which point said pump will feed said second amount of fluid from said storage chamber to said feeding reservoir.2. The bottle of claim 1 , wherein when said infant ceases sucking claim 1 , said infant breathes and said infant's breath is detected by an electronic sensor.3. The bottle of claim 2 , wherein said electronic sensor instructs a computer to activate said pump upon said breath being detected.4. The bottle of claim 1 , wherein when said infant ceases sucking claim 1 , a change in pressure is ...

STRAINER AND FUEL PUMP MODULE HAVING THE SAME

Provided is a strainer including: a filter paper filtering fuel and having a space part disposed therein; an inner rib disposed inside the filter paper; protruding parts protruding up and down from the inner rib to be disposed inside the filter paper; and a communicating pipe combined with the filter paper to communicate with the space part. The filter paper and the inner rib are partially folded up longitudinally. The folded portion is formed in a rounded form, and the upper and lower portions of the filter paper are formed not to contact each other at the folded portion. Widths of the protruding parts are each formed differently and distances between the protruding parts are each formed differently. The width and the distance are more narrowly formed at the portion at which the filter paper is folded than at the portion at which the filter paper is not folded. 1. A strainer , comprising:a filter paper filtering fuel and having a space part disposed therein;an inner rib disposed inside the filter paper;a plurality of protruding parts protruding up and down from the inner rib to be disposed inside the filter paper; anda communicating pipe combined with the filter paper to communicate with the space part of the filter paper,wherein the filter paper and the inner rib are partially folded up longitudinally, the folded portion is formed in a rounded form, and the upper and lower portions of the filter paper are formed not to contact each other at the folded portion, andwidths W of the protruding parts are each formed differently and distances D between the protruding parts are each formed differently, and the width W of the protruding part and the distance D between the protruding parts are more narrowly formed at the portion at which the filter paper is folded than at the portion at which the filter paper is not folded.2. A fuel pump module , comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the strainer of ,'}wherein the strainer is disposed inside a ...

BYPASS FOR A SUSPENSION DAMPER

A vehicle suspension damper comprises a cylinder and a piston assembly including a damping piston along with working fluid within the cylinder. A bypass permits fluid to avoid dampening resistance of the damping piston. A fluid path through the bypass is controlled by a valve that is shifted by a piston surface when the contents of at least one predetermined volume is injected against the piston surface which acts upon the valve. In one embodiment, the bypass is remotely operable. 1a cylinder containing a fluid and a damping piston operable to travel within said fluid in said cylinder, said vehicle suspension damper further including a passageway through said damping piston and limiting a flow rate of said fluid through said damping piston in at least one direction;a bypass pathway in fluid communication with said cylinder, said bypass pathway providing a path for said fluid to travel between a first side and a second side of said damping piston; a valve body;', 'a valve piston housed within said valve body, said valve piston having a valve piston surface;', 'a shaft extending from said valve piston;', 'a valve member coupled to said shaft, said valve member telescopically mounted to said shaft and said valve member movable with respect to said shaft wherein a gap is formed between said valve member and an end of said shaft, and wherein said valve is solenoid-operated;', 'a spring member mounted on said shaft between said valve member and said, 'a valve for controlling a flow of said fluid through said bypass pathway, said valve comprisingvalve piston, said spring member biasing said valve member away from said valve piston; and wherein said valve is remotely controllable.. A vehicle suspension damper comprising: This application claims priority to and is a continuation of the co-pending patent application, U.S. patent application Ser. No. 16/152,118, filed on Oct. 4, 2018, entitled “BYPASS FOR A SUSPENSION DAMPER”, by John Marking, Attorney Docket Number FOX- ...

Two educator / four-way selector valve assembly

A method of controlling the flow of different flow paths of fluid is provided. The method includes rotating a valve to a first position, receiving a first concentrate in the first position, discharging the first concentrate through one of two outlets, rotating the valve to a second position, receiving a second concentrate in the second position, and discharging the second concentrate through one of the two outlets.

Valve device

A first seal portion forms, when seated on a first seated position, a valve side chamber blocked from a relief chamber to have an equivalent fluid pressure to fluid pressure in a pressure-controlled chamber. The first seal portion causes, when lifted from the first seated position on increase in fluid pressure in the pressure-controlled chamber, the valve side chamber to disappear and to communicate the relief chamber with the pressure-controlled chamber. A second seal portion partitions, when seated on a second seated position, a part of the valve side chamber from the other part of the valve side chamber. The second seal portion is configured to be lifted from the second seated position on increase in fluid pressure in the pressure-controlled chamber, before the first seal portion is lifted from the first seated position.

Valve

The invention relates to a valve ( 1 ) for the blocking or controlled establishing of a volume flow of a working fluid in a flow path of a technical device for transmitting and/or storing of energy, in particular in a control device for a hydraulic drive. Said valve comprises a first, second, and third valve opening ( 120, 121, 122 ), a shut-off body ( 100 ) which is moveable between an open-position in which the third valve opening ( 122 ) is open to permit a volume flow of the working fluid between the second and third valve opening ( 121, 122 ) and a close-position in which the third valve opening ( 122 ) is closed by the shut-off body ( 100 ), a guide means ( 110 ) for guiding the shut-off body ( 100 ) between the open-position and the close-position, and a retaining means ( 109 ) for exerting a retaining force on the shut-off body ( 100 ) in the close-position, wherein the guide means ( 110 ) has three guide means parts ( 111, 112, 113 ) having a first, second, and third guide means region ( 114, 115, 116 ) in a fixed connection, the first and third guide means part ( 111, 113 ) are designed for enclosing the shut-off body ( 100 ) and the second guide means part ( 112 ) comprises a plurality of pins in a parallel orientation to the direction of movement of the shut-off body ( 100 ). The valve ( 1 ) can in particular be mass-produced more simply and cost-effectively than conventionally designed valves, and is constructed to be more maintenance-friendly, and, in addition, permits cost savings during operation and for maintenance. Furthermore, the invention relates to a method for manufacturing a valve ( 1 ) of this type and to an apparatus ( 2 ) for the load-pressure-compensated minimizing of the switching delay with the valve ( 1 ) according to the invention for use in a control device of a hydraulic drive.

Systems and methods for high efficiency reliable catalyst delivery to internal combustion engines

The present disclosure relates to improved systems and methods for providing a catalyst to an internal combustion engine. To this end, the systems and methods described herein may redirect a measured flow of pressurized air from an existing engine air flow through a catalyst reservoir to create a catalytic aerosol or mist. The aerosol or mist may be reinjected or delivered to the air intake of an engine. In various embodiments, the systems and methods disclosed herein utilize an existing engine air flow to produce a catalytic aerosol and/or mist rather than utilizing electric pumps or Venturi draws. Air flow may be controlled, adjusted, and/or optimized based upon an engine to which the disclosed systems are coupled based upon one or more passive flow control components (e.g., filters, restrictors, orifices, and/or valves).

TWO EDUCTOR / FOUR-WAY SELECTOR VALVE ASSEMBLY

A selector valve assembly for use in conjunction with an eductor dispensing system which reduces the incidence of product carry-over when the valve is moved from one position to another. The selector valve assembly also reduces the incidence of improper dispensing. In a preferred manner, the selector valve assembly has a single valve member and accommodates four product inlet lines for selectively passing chemical concentrate to two eductors. The selector valve assembly is composed of a minimum of ports, thereby reducing maintenance and cost. 1. A selector valve assembly which can control the flow of at least four flow paths of fluid comprising:a body member having a compartment with an end wall;an outlet passage in the end wall of the compartment;at least two passages communicating with the compartment;a rotatable member sealably positioned in the compartment, the rotatable member having a side wall and an end wall;a first passageway extending a distance into the rotatable member from the end wall thereof; anda second passageway extending through the side wall thereof and communicating with the first passageway;whereby rotation of the rotatable member will selectively orientate the second passageway with each of the at least two passages so as to cause liquid in the four passages to pass to the first and second passageways and subsequently to the outlet passage.2. The selector valve assembly of further including two ports connected to the body member and communicating with the outlet passage in the end wall of the compartment.3. The selector valve assembly of further including cheek valve members opera lively associated with the two ports.4. The selector valve assembly of wherein the check valve members are contained in a compartment constructed and arranged to retain a minimum amount of chemical concentrate.5. The selector valve assembly of wherein there are four passages communicating with the compartment.6. The selector valve assembly of further including at ...

Flow Based Pressure Isolation and Fluid Delivery System Including Flow Based Pressure Isolation and Flow Initiating Mechanism

The fluid delivery system includes a pressurizing device for delivering a pressurized injection fluid, a low pressure fluid delivery system, and a pressure isolation mechanism adapted for fluid communication with the pressurizing device and low pressure fluid delivery system. The pressure isolation mechanism includes a housing defining an inlet port, an isolation port, and an internal cavity. The housing defines a seal seat in the internal cavity between the inlet port and isolation port. A valve member is disposed in the internal cavity. The valve member is free floating in the internal cavity and is adapted to engage the seal seat. The valve member has an open position permitting fluid communication between the inlet port and isolation port, and is fluid flow responsive to fluid flow in the inlet port to engage the seal seat and attain a closed position preventing fluid flow between the inlet port and isolation port.

SEPARATOR DEVICE

A separator device for removing particles from suspension in a fluid including a housing having first and second apertures for ingress and egress of fluid into and out of the housing a first separator chamber disposed at one end of the housing; a second separator chamber disposed at the other end of the housing, and a central chamber disposed between the first and second separator chambers the first and second separator chambers being apertured for ingress and egress of fluid from the central chamber and each containing obstruction means to slow the flow of fluid within the chamber. 1. A magnetic filter for use in a hydronic heating system , the magnetic filter comprising:a housing, having first and second apertures for ingress and egress of fluid into and out of the housing;a first separator chamber for removing particles from suspension in the fluid, the first separator chamber being disposed at one end of the housing;a second separator chamber for removing particles from suspension in the fluid, the second separator chamber being disposed at the other end of the housing,and a central chamber disposed between the first and second separator chambers, a magnet being provided in the central chamber for attracting ferrous particles from fluid in the central chamber,the first and second separator chambers each being apertured for ingress of fluid from the central chamber, and the first and second separator chambers each being apertured for egress of fluid to the central chamber,the first separator chamber containing a first set of walls and/or protrusions providing a barrier to the flow of fluid, configured to slow the flow of fluid within the first separator chamber, and the second separator chamber containing a second set of walls and/or protrusions providing another barrier to the flow of fluid, configured to slow the flow of fluid within the second separator chamber.2. The magnetic filter of claim 1 , in which the first set of walls and/or protrusions defines ...

Straight-bore back pressure valve

A system in some embodiments includes a back pressure valve. The back pressure valve includes a body, a plunger disposed internal to the body, and a friction member disposed about the exterior of the body. The friction member is configured to expand radially to contact an internal surface of a bore. In some embodiments, a method includes disposing a back pressure valve into a straight bore and expanding a friction member of the back pressure valve radially into contact with an internal surface of the straight bore.

Medical Gas Manifold

A gas pressure regulator is disclosed that includes a reciprocating piston that engages and disengages from a seat to open the higher pressure and lower pressure sides of the regulator to one another. The regulator includes an elastomer seal between the seat and the piston that has an ignition rating sufficient to avoid combustion in the presence of oxygen at pressure differentials that are a factor of between 5 and 10 between the higher pressure and lower pressure sides of the regulator.

Relief valve

A relief valve that includes a tube; a valve configured to slide along an inner wall of the tube in an axial direction, and a spring that urges the valve, wherein the valve has a hydraulic pressure receiving surface on a first axial side that is one side in the axial direction, and a spring abutment against which the spring abuts, on a second axial side opposite to the first axial side, and the tube has a discharge oil passage having an opening in the inner wall and extending through the inner wall in a radial direction.

FLUID FLOW CONTROLLER AND FILTER ASSEMBLY WITH FLUID FLOW CONTROLLER

A filter assembly comprises a housing open at a first end and holding a filter element therein and an end plate secured to the housing and closing the first end and enclosing the filter element within the housing. The plate includes a first inlet opening, a second inlet opening, and an outlet opening. The filter assembly further includes a fluid flow controller disposed between an end of the filter element and the end plate. The flow controller includes a valve including a first portion cooperating with the first inlet opening and a second portion cooperating with the second inlet opening. The fluid flow controller further includes a spring-loaded valve seat in communication with the valve and providing resistance to movement of the first portion of the valve. 120-. (canceled)21. A method of operating a fluid flow controller , the method comprising:engaging a spring-loaded valve seat with a first portion of a check valve, the check valve including the first portion and a second portion extending from and connected to the first portion;moving the first portion of the check valve and the spring-loaded valve seat in response to a differential pressure above a first predetermined value being applied across the first portion; andmoving the second portion of the check valve in response to a differential pressure above a second predetermined value being applied across the second portion, the second predetermined value being less than the first predetermined value,wherein the spring-loaded valve seat is movably positioned within a stationary valve housing, and the spring-loaded valve seat includes a plurality of projections that extend through a plurality of slots formed through the valve housing.22. The method of claim 21 , wherein each projection of the plurality of projections moves within a corresponding slot of the plurality of slots with movement of the spring-loaded valve seat relative to the valve housing.23. The method of claim 21 , wherein the spring-loaded valve ...

Valve cartridge

A valve cartridge for insertion into a valve block for a manifold valve for accommodating a valve in the valve cartridge includes at least one through opening for the passage of fluid flowing to the valve and a filter device for filtering the fluid. The valve cartridge includes a first part and a second part, which are interconnected in such a way that the through opening is formed by the first and second part, the filter device being arranged between the first part and the second part.

Automatic draining back flow prevention device

A double check valve is provided that includes an in-line inlet check valve and an outlet check valve that cooperate to prevent back flow of fluid through the valve. The check valve also includes at least one vent that allows for fluid trapped within the check valve to drain, thereby preventing freezing of the check valve and hydrant to which it is interconnected. The check valve provided omits many superfluous components and thus is smaller and easier to install than check valves of the prior art.

Backflow Prevention and Method of Manufacture

A backflow prevention assembly is disclosed including a backflow prevention valve having a valve housing including a valve inlet end and a valve outlet end; a spool spacer of predetermined length having a first end and a second end; an inlet shut-off valve; and an outlet shut-off valve, wherein the spool spacer extends between the backflow prevention valve and one of the inlet shut-off valve and the outlet shut-off valve. The entire assembly, including the backflow prevention valve, the spool spacer, the inlet shut-off valve, and the outlet shut-off valve, is a certified assembly, certified by a certifying authority prior to installation. Methods of manufacturing a backflow prevention assembly and replacing a backflow prevention assembly are also disclosed. 120-. (canceled)21. A method of manufacturing a backflow prevention assembly comprising the steps of:receiving a measured length of a first backflow prevention assembly between a fluid supply conduit to a fluid exit conduit, wherein the first backflow prevention assembly is at a replacement site and includes a first inlet shut-off valve, a first backflow prevention valve having a first backflow prevention valve length, and a first outlet shut-off valve;receiving a measured line size of at least one component of the first backflow prevention assembly;obtaining a second backflow prevention valve having a second backflow prevention valve length different than the first backflow prevention valve length;obtaining a spool spacer;obtaining a second inlet shut-off valve and a second outlet shut-off valve, the second inlet shut-off valve having a second inlet shut-off valve line size, the second outlet shut-off valve having a second outlet shut-off valve line size, each of the second inlet shut-off valve line size and the second outlet shut-off valve line size being equal to the measured line size;assembling a second backflow prevention assembly by connecting the second backflow prevention valve, the spool spacer, the ...

Check valve

To provide a check valve which can be used even under a high temperature condition by overcoming a drawback “valve element sticking to sealing member” associated with high temperature use while enhancing heat resistance. An opening of a fluid path formed in a first body is brought into a closed state by bringing a valve element biased by a biasing member into contact with a sealing member. The sealing member is formed of a post-cured perfluoro elastomer packing. An annular sealing portion which is brought into line contact with the sealing member is formed on the valve element.

SYSTEMS AND METHODS FOR PISTON CHECK VALVES

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

Pressurized Vapor Cycle Liquid Distillation

Embodiments of the invention are directed toward a novel pressurized vapor cycle for distilling liquids. In some embodiments of the invention, a liquid purification system is revealed, including the elements of an input for receiving untreated liquid, a vaporizer coupled to the input for transforming the liquid to vapor, a head chamber for collecting the vapor, a vapor pump with an internal drive shaft and an eccentric rotor with a rotatable housing for compressing vapor, and a condenser in communication with the vapor pump for transforming the compressed vapor into a distilled product. Other embodiments of the invention are directed toward heat management, and other process enhancements for making the system especially efficient.

MAGNETICALLY CONTROLLED PRESSURE RELIEF VALVE

A relief valve includes a first chamber with an inlet that includes an inlet valve seat and an outlet. A second chamber is spaced apart from the first chamber. A chamber wall is positioned between the first chamber and the second chamber. A closure member is movably positioned within the first chamber and is configured to be closable on the inlet valve seat. A first magnet is coupled to the closure member. The first magnet is movably positioned within the second chamber and is configured to generate a first magnetic field of a first polarity. A second magnet is positioned within the second chamber and is configured to generate a second magnetic field of a second polarity. The first magnetic field and the second magnet field interact to bias the closure member to rest on the inlet valve seat with a set force. 1. A relief valve comprising: a first chamber with an inlet and an outlet, the inlet comprising an inlet valve seat;', 'a second chamber spaced apart from the first chamber; and,', 'a chamber wall positioned between the first chamber and the second chamber;, 'a body that includesa closure member movably positioned within the first chamber, the closure member beingconfigured to be closable on the inlet valve seat;a first magnet coupled to the closure member, the first magnet being movably positioned within the second chamber, the first magnet configured to generate a first magnetic field of a first polarity;a second magnet positioned within the second chamber and spaced apart from the first magnet, the second magnet configured to generate a second magnetic field of a second polarity that is opposite the first polarity, wherein the first magnetic field and the second magnet field interact to bias the closure member to rest on the inlet valve seat with a set force such that when a pressure in the inlet exceeds a set pressure resulting from the set force the closure member is lifted from the inlet valve seat.2. The relief valve of claim 1 , wherein the second ...

Anchor valve for security

A system for protecting a fluid supply from a contaminant includes an anchor check valve having an inlet end and an exit end, the anchor check valve adapted to allow fluid flow through the anchor check valve from the inlet end to the exit end but prevent fluid flow through the check valve from the exit end to the inlet end; a dry-barrel fire hydrant in proximate fluid communication with the anchor check valve, the dry-barrel fire hydrant having a valve operating mechanism; and a hydrant shoe coupled to the anchor check valve, the hydrant shoe having a valve assembly adjustably connected to the valve operating mechanism of the dry-barrel fire hydrant.

Device for use with floor drains

In a floor drain assembly of the type including a floor drain having a collar surrounding a drainage opening installed in a recess in a floor, an improvement is provided. The improvement includes a skirt extending about the collar and secured to the collar by a fastener extending through the skirt and into the collar but not into the floor. The skirt defines an opening sized to receive a treatment material therein. A lid is configured for selectively engaging with the opening for allowing selective placement of treatment material in an area beneath the skirt.

AUTOMATIC PACING SYSTEM FOR A BABY BOTTLE

A baby bottle, an insert for a baby bottle, a baby bottle including an insert, and a method of feeding an infant that serves to pace the infant's feeding rhythm. Generally, these devices and methods will be of use for a preterm infant who lacks coordination of the suck-swallow-breathe synchrony, but can also be used with full term infants who can benefit from rigid control of the flow of milk from a bottle, this includes, but is not limited to, infants with gastroesophageal reflux who can require pacing of feeds to allow for gastric emptying. The device generally cues the infant to swallow and breathe after each 1-4 sucks by stopping the flow of the fluid from the bottle after the infant has sucked sufficiently or a predetermined period of time has passed. Once the baby breathes or a period of time passes, the bottle resets for the next repetition. The device also serves to consistently slow the flow of milk during oral feeding. 1. A baby bottle for providing paced feeding , the bottle comprising:a storage chamber, containing a first amount of fluid;a feeding reservoir, containing a second amount of said fluid smaller than said first amount, said feeding reservoir in fluid communication with said storage chamber;a nipple in fluid communication with said feeding reservoir; anda pump for moving fluid from storage chamber to said feeding reservoir;wherein when an infant sucks on said nipple, they can only obtain said second amount of said fluid until they cease sucking at which point said pump will feed said second amount of fluid from said storage chamber to said feeding reservoir.2. The bottle of claim 1 , wherein when said infant ceases sucking claim 1 , said infant breathes and said infant's breath is detected by an electronic sensor.3. The bottle of claim 2 , wherein said electronic sensor instructs a computer to activate said pump upon said breath being detected.4. The bottle of claim 1 , wherein when said infant ceases sucking claim 1 , a change in pressure is ...

Flow control device and flow control method

The invention generally relates to a flow control device and a flow control methods. One embodiment provides a flow control device comprising: a first flow path to allow fluid to flow from an inlet port provided on an inlet side of the device to an outlet port provided on an outlet side of the device; a closure element arranged to prevent fluid flow along the first fluid path in a direction from the outlet port to the inlet port; and an arrangement adapted to open a second fluid path, different along at least part of its length from the first fluid path, in dependence upon the pressure of fluid at the outlet side, the second fluid path allowing fluid to flow from a first relief port provided on the outlet side to a second relief port provided on the inlet side, wherein the flow control device comprises an inner body part and an outer body part, the inner body part being sealingly arranged and moveable within the outer body part ( 4 b; 40 b ) between a first position and a second position under the influence of the pressure of fluid at the outlet side, wherein a first part of the second fluid path is formed within the inner body part and a second part of the second fluid path is formed within the outer body part, the first and second parts of the second fluid path being in communication with one another when the inner body part is in the second position but not when the inner body part is in the first position, thereby opening the second fluid path when the inner body part moves from the first position to the second position.

Combination flow control valve and reverse flow check valve

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

Air diverter for a vacuum excavator

An air diverter system for a vacuum excavator is disclosed. In a particular embodiment, the system includes a bag house in communication with a debris tank. In addition, the system includes a filter housing secured to a side of the bag house and a valve housing interposed between the bag house and the filter housing. A valve member is mounted within the valve housing and is configured to rotate about an axis to define at least two different passageways for an air flow. The system also includes a selector for rotating the valve member and selectively aligning the passageway for the airflow between a vacuum pump inlet and either the filter housing or the bag house.

In-line valve with improved flow

An improved in-line fluid valve for use with low pressure fluid sources containing pollutants.

Poppet Valve with Integrated Dampener

A poppet valve with an integrated dampener is disclosed. In some embodiments, the valve includes a poppet guide with a stem and a hollow poppet is disclosed. The hollow poppet receives the poppet guide stem therein, thereby defining an internal cavity. The poppet is movable relative to the poppet guide to adjust the volume of the internal cavity. The poppet is also moveable relative to a valve seat between a seated position and an unseated position. The poppet may include a body with a seal groove and an elastic seal disposed within the seal groove. The seal is configured to engage the valve seat prior to the poppet body when the poppet moves toward the seated position. The valve may include a poppet guide pivot system that enables pivoting of the poppet guide and the poppet relative to an axial centerline of the valve.

Valve Assembly of a Filter Element

A valve assembly of a filter element has a valve plunger with a valve stem provided with a coupling section and a valve plate connected to the valve stem and designed to close a valve opening. The valve assembly has a spring element with a spring section for generating a restoring force and a holding section for mechanically coupling the spring element to the coupling section of the valve plunger. The valve stem is enclosed at least partially by the spring section. The holding section and the coupling section engage each other such that the spring section generates a restoring force along a center axis of the valve assembly that forces the valve plate against a rim of the valve opening.

Suction pulsation reduction apparatus of swash plate-type compressor

The present invention relates to a suction pulsation reducing device of a swash plate type compressor, and more particularly, to a suction pulsation reduction apparatus provided on a suction channel formed in a rear head of a swash plate type compressor, in which a moving range of a core portion is limited and all parts to be mounted on a suction channel are integrally formed in a case.

Pressure relief valve

A new type of pressure relief valve is described herein which has advantages over standard valves in that it may comprise a longer plunger than normal, and two guiding points located far away from each other for guiding the plunger within the housing. The valve may also comprise improved exhaust ports and an anti-rotation washer.

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.

Valve Insert

An insert is provided for insertion through an opening in the surface of a conduit, the insert comprising an insert body having first and second open ends defining an axis of flow therebetween. The insert further comprises a valve flap connected to N the insert body. The valve flap is moveable between a closed position in which it creates a closure, thereby preventing flow along said axis, and an open position in which the valve flap allows flow along the axis. The valve flap is arranged so that, when in the open position, it is substantially U-shaped in side cross-section and is oriented with respect to the insert body so that said U-shape arches over the axis of flow. 128-. (canceled)29. A method of installing an insert for provision of a valve in a conduit , the method comprising creating a slot in the surface of the conduit , said slot not extending across a full cross-section of the conduit , and fitting the insert , which includes an insert body and a valve flap , via said slot; wherein creating the slot in the surface of the conduit comprises affixing a jointing strap having a cut out portion to an outer surface of the conduit and using the cut out portion as a slot cutting template for the conduit; and the cut out portion of the jointing strap holding the insert in place when the conduit is being sealed therearound.30. The method of claim 29 , wherein the slot extends across no more than half a cross-section of the conduit.31. The method of claim 30 , wherein the slot is cut in a direction substantially perpendicular to the direction of fluid flow in the conduit.32. The method of claim 29 , wherein the slot is sized to enable fitting of the insert into the conduit claim 29 , and to ensure that the conduit and the insert form a leak-proof continuum after this fitting has taken place.33. The method of claim 29 , wherein the conduit has a substantially circular cross-section and the insert is substantially annular claim 29 , the method further comprising ...

Variable suction device for an a/c compressor to improve nvh by varying the suction inlet flow area

A variable displacement compressor for an air conditioning system includes a suction throttle valve. The suction throttle valve includes a housing with a cavity formed therein. A first piston reciprocatingly disposed in the cavity is configured to cause a variable restriction of a flow of refrigerant through a suction inlet formed in the housing. The suction inlet provides fluid communication between a suction port and the cavity formed in the housing. The refrigerant flows through the suction port in a direction that is not parallel to a direction the piston reciprocates within the cavity. The suction throttle valve is configured to increase the restriction in the suction inlet when a crankcase pressure associated with the variable displacement compression is increased relative to an external suction pressure of the refrigerant entering the suction throttle valve.

Hydraulic control apparatus

A hydraulic control apparatus includes an output-side oil passage into which oil from a first oil passage and oil from a second oil passage flow, and a pressure regulating check valve regulating a hydraulic pressure in the second oil passage. The pressure regulating check valve includes first and second elastic portions housed in a spool hole between a valve body and a bottom of the spool hole. A natural length of the second elastic portion is shorter than a distance between the valve body and the bottom when the valve body closes an inflow hole. The second elastic portion applies an elastic force to the valve body in a state in which the valve body opens the inflow hole.

Apparatus and method for modifying a fuel tank to accept an in-tank fuel pump

A baffle has a sidewall and an interior space sized to receive the in-tank pump. The sidewall is formed of a flexible material so as to be longitudinally compressible. The compressibility of the sidewall allows the baffle to be mounted in fuel tanks of varying depths. The baffle is used in a method for mounting an in-tank fuel pump in a fuel tank. The method includes the steps of cutting a hole in a top wall of the fuel tank, inserting the baffle into the tank through the hole, compressing the sidewall of the baffle so that the baffle extends between the top and bottom walls of the tank, installing the in-tank pump in the interior space of the baffle and installing a cover plate over the hole.

FLUID STOP VALVE UNIT

The present invention concerns a fluid stop valve unit comprising at least one fluid stop valve and a pressure responsive part, integrated or separate, arranged so that the at least one fluid stop valve is kept in a closed state. The pressure responsive part, integrated or separate, has an opening characteristic going from the closed state to an open state with a decrease of pressure after a threshold pressure has been reached. 112-. (canceled)13. A fluid stop valve unit comprising:at least one fluid stop valve that is a non-return valve having a first valve body end facing a valve seat and a second valve body end facing in an opposite direction than the first valve body end; anda pressure responsive part, integrated or separate, arranged so that the at least one fluid stop valve is biased in a closed state, wherein the pressure responsive part is a spring comprising at least one diaphragm spring that biases the at least one fluid stop valve in the closed state and that is compressible when a pressure acting on the first valve body end of the at least one fluid stop valve reaches a threshold pressure to move the first valve body end of the at least one fluid stop valve in a flow direction to an open state,wherein the pressure responsive part, integrated or separate, has an opening characteristic allowing the at least one fluid stop valve to remain in the open state, after the pressure has reached the threshold pressure, when the pressure decreases below the threshold pressure, to allow flow in the flow direction past the first valve body end toward the second valve body end.14. A fluid stop valve unit according to claim 13 , wherein the threshold pressure is reached when at least 25-50% of a system pressure is reached.15. A fluid stop valve unit according to claim 13 , wherein the threshold pressure across the valve to move the valve to the open state is several times greater than a pressure across the valve to hold the valve in the open state.16. The fluid stop ...

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.

Fluid flow controller and filter assembly with fluid flow controller

A filter assembly comprises a housing open at one end and holding a filter element therein and a plate closing the open end of the housing and enclosing the filter element within the housing. The plate includes at least two first inlet openings, at least two second inlet openings, and a central outlet opening. The filter assembly further includes a fluid flow controller disposed between an end of the filter element and the plate. The flow controller includes a relief valve comprising a first portion cooperating with the first inlet openings and a second portion cooperating with the second inlet openings; and biasing means operatively connected to the relief valve and providing resistance to movement of the second portion of the relief valve.

Piston-type one-way valve

A piston-type one-way valve, comprises: a valve body shell; and a valve cover, fixedly connected with said valve body shell via cover bolts; wherein said piston comprises: a piston head, and a sealing gasket; a cylinder convex is provided in a center of said valve cover; a piston rod sleeve is provided in said cylinder convex; said piston rod sleeve matches and sleeves said piston rod; a spring base is fixed at a first end of said piston rod sleeve; a first end of a spring is fixed on said spring base; a second end of said spring is fixed on said piston rod; and a ring-shaped element is provided along an opening edge of said cover, and fixedly connected with said opening edge of said cover; an inner circle of said ring-shaped element touches outer circles of said piston head or said sealing gasket closely.

Valve member assembly

A valve member assembly includes a housing, a check valve assembly, and a float valve assembly. The housing is a cup, a retainer and a bonnet releasably secured together. The check valve assembly is positioned within the cup, and the float valve assembly is positioned between the bonnet and the retainer. The valve member assembly can be easily assembled and inserted into a valve body.

Safety device for installation in a gas-supply system, in particular, an acetylene-supply system

Relevant specifications in the field of gas supply provide for different safety devices for installation in a gas-supply system, in particular, an acetylene-supply system. To provide such a safety device, which is characterized by a compact structure and a high level of operational reliability, this invention proposes that a valve body ( 1 ) incorporates an over-pressure valve ( 4; 104 ) of a quick-action shut-off device, a control valve ( 3; 103 ) of a pressure-limiting device, and a safety valve ( 2; 102 ), whereby the safety valve ( 2; 102 ) can be fluidically connected to the over-pressure valve ( 4; 104 ) and the control valve ( 3; 103 ), and closes either when the over-pressure valve ( 4; 104 ) opens due to an inlet pressure that is above the inlet-pressure limit value or when the control valve ( 3; 103 ) opens due to an outlet pressure that is above an outlet-pressure limit value.

Actuator for a water spray structure

An actuator system for a fluid playground including a first elongated tubular member defining a first axially extending enclosure and having a first inlet connectable to a fluid source, and a second elongated tubular member positioned within the first tubular member, the second tubular member defining a second axially extending enclosure, and having a second inlet in fluid communication with the first enclosure and an outlet traversing the first tubular member. The outlet is connectable to at least one fluid playground device. A plug element is shaped to removably and sealably close the second inlet of the second tubular member. A resilient member urges the plug element towards sealing engagement with the second tubular member. A pressure exerted on a movable actuating element connected to the plug element causes its displacement away from sealing engagement with the second inlet, thereby allowing fluid flow to the fluid playground device.