Abstract: Anti-drainback valves, flex tube assemblies that include one or more anti-drainback valves, and fluid filters that include one or more flex tube assemblies and/or anti-drainback valves are disclosed. In embodiments the anti-drainback valves and flex tube assemblies are described in the context of their use in a multi (e.g. dual) pump fluid filter, such as a dual pump transmission fluid filter. Dual pump fluid filters including integral and separable flex tube assemblies are also described.

Abstract: Disclosed is a fan blade for a gas turbine engine, including: an airfoil, a cavity formed in the airfoil, a cover configured to cover the cavity, the cover when secured to the airfoil encloses the cavity in the airfoil, a conduit extending from the cavity to an exterior surface of the fan blade, and a check valve located in the conduit, the check valve configured to regulate an internal pressure of the cavity when the cover is secured to the airfoil.

Abstract: A check valve having a reverse-direction fluid supply function capable of supplying a fluid in a reverse direction by opening a fluid passage formed in a central shaft of a disk configured to open or close a flow path. The valve includes a valve main body into which a fluid is introduced, a shaft installed in the valve main body and configured to move forward toward an inside of the valve main body or backward toward an outside of the valve main body, a disk disposed in the valve main body and configured to open or close the valve main body, and a spring interposed between the disk and an inner surface of the valve main body. The disk opens the valve main body due to fluid pressure and blocks the same when fluid pressure is removed by movement of the shaft or by an elastic reaction force of the spring.

Abstract: A high-pressure pump has a metering valve and a valve stopper. The stopper has a regulation portion which an end surface of the valve is brought into contact with. An outer diameter of the regulation portion is equal to an outer diameter of the outer peripheral surface of the valve. A cylindrical sleeve is disposed around the regulation portion. When the end surface of the valve is in contact with the regulation portion, the sleeve covers a tapered surface of the valve.

Abstract: A shock absorber is disclosed herein with a frequency sensitive damping force that includes a cylinder containing a damping medium, a piston rod which is axially movable in the cylinder, and a piston assembly arranged for axial movement in the damping medium. The piston assembly is connected to the piston rod and divides the cylinder in a working space on each side of the piston. The piston assembly includes a flow path fluidly coupled to a frequency sensitive element movable relative to the piston assembly.

Abstract: A motor vehicle non-return valve (10) for protecting a filter from hot exhaust gases, comprises a valve body (65), a valve plate (76), an elastic element (70), and a guide pin (72). The valve plate (76) comprises a sleeve (68) that surrounds the guide pin (72) and the valve plate (76) is slideably guided along the guide pin (72) and prevents a fluid flow through the valve body (65) in a blocking direction (91) and otherwise releases the fluid flow through the valve body (65). The elastic element (70) loads the valve plate (76) with a force that is acting to effect closing, wherein the sleeve (68) in a first sleeve section (71) is movably guided on a guide surface (75) of the guide pin (72) and wherein a second sleeve section (69) surrounds the guide pin (72) and the elastic element (70) in radial direction.

Abstract: A system, method and apparatus for enabling the release of pressure in a supply line including an electronic control member for controlling and enabling the release of pressure in the supply line at a desired pressure whether or not power is maintained to the electronic control member.

Abstract: 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.

Abstract: A discharge valve including a tubular, valve seat and a valve guide disposed above the valve seat. The valve guide has a discharge passage plug and a guide rod that is affixed to, and projects downwardly from, the bottom of the plug. The valve guide also has an interiorly threaded, lifting sleeve that is affixed to, and projects upwardly from, the top of the plug. A piston is disposed between the valve seat and the valve guide. The piston has a conical, head portion for engaging the top of the valve seat, and a stem portion that is affixed to, and extends upwardly from, the head portion. The stem portion has a longitudinal socket within which the guide rod is slidably received. The stem portion also has a number of apertures that intersect the socket for providing pressure relief to the socket. A compressed spring is disposed between the valve guide and the head portion of the piston for normally retaining the head portion in engagement with the valve seat.

Abstract: A flush valve handle assembly and a check valve assembly are provided for use in a flush valve, wherein the flush valve handle assembly and check valve assembly include improved components. The flush valve handle assembly includes a ball member and a plunger rod, one or both of which can be constructed of a polymeric material. An improved flush file retainer is provided which includes at least one ear integrally formed around a circumferential portion thereof. This at least one ear secures the flush file retainer in a snap-fit configuration in the socket-coupling. The check valve assembly includes a piston/seal having a plurality of ribs having a tapered design extending outwardly from a circumferential periphery of the piston/seal. The piston/seal includes a sealing material located on a top surface thereof. This sealing material can be a thermoplastic elastomeric coating material.

Abstract: A relief vent assembly for a fuel storage tank includes a vent body defining a chamber to provide a substantially axially smooth and unencumbered path of flow for pressurized fluid to vent out from the tank. Such a path of flow allows the pressurized fluid to remain laminar throughout approximately the entire path through the chamber, maintaining a high flow rate. The vent assembly includes a crossbar that supports the rod of a lid that covers a distal margin of the vent body. The crossbar is disposed substantially at the distal margin of the vent body to prevent any premature turbulent flow of the pressurized fluid, which would slow the flow rate. A widening tapered bore of the chamber increases the flow area and serves to offset the area occupied by the crossbar.

Abstract: An apparatus, system, and method are disclosed for a gas chromatography (GC) system with a check valve. The check valve is situated downstream from the electronic flow control module and upstream of the injector. When a sample is volatized in the injector, the check valve closes into a checked position and prevents solvent and sample from backing into the gas delivery line. In certain embodiments, the check valve has a conical plug that fits into a seat that has an aperture. When the conical plug is depressed, the conical plug engages the sides of the aperture and seals the check valve, preventing solvent and sample from backing through the check valve. In certain embodiments, the change in pressure caused by over-pressurization in the injector, combined with the force applied by a spring on the conical plug, depresses the plug such that it seals the aperture.

Abstract: A one-way soffit vent has an upstream valve seat and a downstream vented cover having a boss extending in the upstream direction. A valve disk is reciprocally mounted on the boss and biased against the valve seat.

Abstract: A relief valve assembly. The relief valve assembly has a housing that houses a sleeve element that surrounds a spool that has a spring guide disposed therein and is biased away from the spool by a spring. A fluid flow path is created from a valve exit of the assembly through the sleeve and spool via a series of openings, grooves and orifices in at least one position of the relief valve assembly. The fluid flow path acts to reduce pressure rise rate.

Abstract: A non-return valve includes a valve body (1) which defines an internal fluid through-opening (7) extending along the longitudinal axis (5) of the body. A seat body (17) defines a valve seat (31) arranged in the through opening (7). A closing body (35) is axially displaceable in the through opening (7) oppositely to a closing force produced by a closing spring (45) between a closed position applied to the seat body (17) and an open position lifted from the valve seat (31) on the closing body (35). The valve body (1) forms a guide along which the seat body (17) is axially displaceable in different adjusting positions corresponding to the desired preloads of the closing spring (45) and, consequently to the desired adjustments of the closing force quantity of the closing spring (45).

Abstract: A metallic separating plate 6 is arranged between the sealing rings 5 and the synchronizing plate 7 to prevent mutual wear of the sealing rings 5 and the synchronizing plate 7 in an annular valve having sealing rings 5 as sealing elements and a synchronizing plate 7 to synchronize and dampen the ring opening movement.

Abstract: An approach is provided for minimizing failure of relief valve assembly and enhancing quality of control of making a relief valve conforming to the standards. An improved relief valve includes a body having a seat formed in a passageway. A relief valve core member is mounted in the seat, wherein the body and the relief valve core member are fixedly engaged by spinning the body into a receiving portion of one the relief valve member, wherein the relief valve member is configured to create a resilient force that control the pressure on the passageway.

Abstract: A muffler with variable acoustic properties. A pressure cell with a diaphragm, a spring, a piston, a piston rod, a closing element on the piston rod, and a pressure connection line are integrated into a housing. The diaphragm is thermally insulated against the piston rod. Another layer of thermal insulation is provided between the closing element and the pressure cell.

Abstract: An integrated pressure management apparatus, system and method for minimizing resonance of a poppet. A housing defines a fluid communication passage between ports. The housing includes a first portion, which extends along an axis, and has a first surface parallel to the axis. A poppet is movable between a first configuration that prevents fluid communication between the ports, and a second configuration that permits fluid communication between the ports. The poppet includes a second portion. The second portion is translatable along the axis relative to the housing, and includes a tubular stem that has a second surface parallel to the axis. The second portion nests with the first portion so as to define a gap between the first and second surfaces. The first and second portions define a chamber, and the gap restricts fluid flow between the fluid communication passage and the chamber.

Abstract: A vaccum-breaking valve comprising: a tubular body (10) mounted through one of the walls (P) of the cabinet (G) and having inner (11) and outer (12) ends, a valve seat (15) defining a fluid communication between the inside and the outside of cabinet (G); and a seal constantly biased towards a closed position, blocking said fluid communication and dispalceable towards an open valve position. The seal comprises a slide (20), which is axially and slicingly mounted through the valve seat (15) and has a surrounding sealing ring (25), which is seated against the valve seat (15) when the slide (20) is displaced to the closed seal position, the slide (20) being provided with at least one air passage (24) interconnecting the upstream and downstream sides of the valve seat (15) when the slide (20) is in the open seal position.

Abstract: A compressor assembly including a compressor mechanism, a compression chamber and a discharge chamber. A discharge port provides fluid communication between the compression chamber and the discharge chamber. A valve seat circumscribes the discharge port. A discharge valve member having a valve head, a biasing section and a valve support is provided and may be formed out of a single integral part. The valve head is engageable with the valve seat. A non-threaded coupling member may mount the valve support to the cylinder block of the compressor mechanism. A guide member engageable with the biasing section of the valve member may also be provided. The valve head may include a second concave surface positioned opposite the surface engageable with the valve seat and have an effective area larger than the discharge port area. The valve head and valve seat may each be partially spherical surfaces having a common radius.

Abstract: A valve, in particular for the oil circuit of an internal combustion engine. The valve includes a supporting dome, a valve body situated therein, a valve disk which is connected to the supporting dome and has an opening which can be closed by the valve body, and an element having a spring action which urges the valve body into the position in which the valve body closes the opening of the valve disk; the valve disk including a receptacle for a screen element, and the screen element being permanently connected to the valve disk.

Abstract: A combination check valve and pressure relief valve is provided for use in regulating the flow of fluid between a first fluid side and a second fluid side. The combination check valve and pressure relief valve includes a valve plug, a valve guide moveably positioned in relation to the valve plug, a valve stem engaged to the valve guide, a check compression spring attached to the valve stem and positioned between the valve guide and the valve plug, a valve seat carried by the valve stem, and a relief compression spring positioned between the valve seat and the valve guide. The valve guide is adapted to move the valve stem relative to the valve seat against the force of the relief compression spring to allow fluid to pass from the first fluid side to the second fluid side through a fluid flow passage formed between the valve stem and the valve seat.

Abstract: In a valve used in connection with a scroll compressor, a central profiled body is designed to protrude in an opening for outlet of gas from a compression stage, a outer axisymmetric surface of which is concave, of generally toroidal shape, and is terminated by a tip, the outlet opening of the compression stage being delimited by a curved surface forming, in the downstream direction, a widening providing, with the central profiled body, a cross section for the passage of the gas which is substantially constant, closing means being provided in order to seal this passage in the closed position of the valve.

Abstract: A diaphragm valve assembly includes a diffusing screen, and a generally spherical lightweight membrane that provides a 360° circular seal. Spring loading enables variable resistance to be placed on the seal to allow the operator to adjust the internal pressures in an engine by metering the intake and exhaust cycles to obtain maximum performance characteristics from the subject engine.

Abstract: This invention is an effective engine induction valve which provides a decrease in engine blowback while maintaining engine power. This valve uses a moveable member made from a heat-setting material, this member being bent into an elliptical curve when the member is in the closed position. This elliptical curve has an included angle at the edge of the member which opens toward the engine, this orientation being beneficial in reducing blowback. Using springs to limit the force attaching the moveable member to the valve body prevents unwanted buckling of this member when exposed to elevated temperature and fuel. An embodiment is described which provides a valve with a uniform frequency response at various operating conditions, especially different temperatures.

Abstract: A vacuum adjustment valve, particularly for thoracic drainage devices, which comprises a valve body arranged in the air intake duct and tuning a first region connected to the intake duct and a second region connected to the drainage device. A regulator is arranged between the regions, is struck by the air stream and is operatively connected to a flow control element which controls a port for connection between the second region and an environment at atmospheric pressure. Adjustable elastic closure elements act on the flow control element.

Abstract: A high volume pressure valve accurately adjustable to within 0.25 PSIG for attachment to a pipe outlet. A flanged valve body and a cap are connected by a compression spring to permit the opening of the valve when the predetermined outlet pressure setting of the valve is exceeded.

Abstract: An inline check valve having a piston member and a seat in a valve body having a larger diameter at the end thereof away from the piston. The seat is retained within a groove by a seat retainer which prevents removal of the seat from the groove without deformation of the seat.

Abstract: A high volume pressure valve accurately adjustable to within 0.25 PSIG for attachment to a pipe outlet. A flanged valve body and a cap are connected by a compression spring to permit the opening of the valve when the predetermined outlet pressure setting of the valve is exceeded.

Abstract: An air inlet valve assembly for a rotary scroll compressor is disclosed. The rotary scroll compressor includes stationary and orbiting scroll elements which are intermeshed and nested to form at least one spiraling compression pocket therebetween, a drive mechanism drives the orbiting scroll element in an orbit about the stationary scroll element, and an anti-rotation bearing device maintains the orbiting scroll element substantially non-rotational with respect to the stationary scroll element. The air inlet valve assembly supplies an uncompressed gas (e.g., ambient air) to the compression apparatus and prevents backward rotation of the orbiting scroll element when power to the drive mechanism is terminated. The air inlet valve assembly includes a valve piston positioned within an air intake channel leading to the suction region of the rotary scroll compressor, the valve piston having a first position blocking the air intake channel and a second position unblocking the air intake channel.