Abstract: A reed valve 1 includes: a valve body 4; a valve seat 6 having a valve hole 3 for passage of a fluid J; a casing 8 accommodating the valve body 4; and a reed 10 including an arm part 18 having a first end portion 22 connected to the casing 8, and a valve body support part 20 connected to a second end portion 24 of the arm part 18 and supporting the valve body 4 so that the valve hole 3 can be opened and closed. When a first direction D1 is a flow direction of the fluid J in the valve hole 3, and a first surface 21 is a surface facing downstream in the first direction D1 among an inner surface of the casing 8, the first surface 21 includes a recess 27 facing the arm part 18.

Abstract: Disclosed herein are embodiments of a value assembly, methods of manufacturing the same, and methods of using the same. In one embodiment, a sensor assembly comprises a housing having a through-bore, a first flap coupled to a first shaft and a second flap coupled to a second shaft, wherein the first shaft and the second shaft are coupled within the housing; and one or more gear assemblies coupled to the first shaft and the second shaft, wherein the gear assemblies are configured to rotate the first flap and the second flap from a first position to a second position to prevent a flow from traversing through the through-bore, and from the second position to the first position to allow the flow to traverse through the through-bore.

Abstract: The invention relates to a pressure relief device and to a method for producing a pressure relief device, the pressure relief device (10) comprising a rupture disc (11) and a vacuum support (12, 32), the rupture disc and the vacuum support being made of graphite, the one-piece rupture disc having an exit side (13) and an entry side (14), the rupture disc having a recess (15) on the entry side, said recess (15, 33) forming a rupture area (17) within a retainer (16) of the rupture disc, the vacuum support being inserted in the recess, the pressure relief device having a carbon retaining device (30) for a form-fitted fastening of the vacuum support in the recess.

Abstract: A valve assembly for a fracturing pump includes a valve seat having a bore, the valve seat having an upper region forming at least a portion of a strike face. The valve assembly also includes a groove and a valve seat insert positioned within the bore. The valve seat insert includes a body portion extending at least a portion of a bore length. The valve seat insert also includes an insert bore extending through the body portion. The valve seat insert further includes an upper insert region, at least a portion of the upper insert region positioned within the groove. The valve assembly also includes a valve member positioned to reciprocate within the bore, the valve member moving between an open position and a closed position.

Abstract: A charging inlet for an electric vehicle (EV) includes a body defining a socket housing a conductive charging terminal, and a flange extending from the body and defining an interior channel in fluid communication with the socket. A valve assembly of the inlet includes a cap or adapter body removably attachable to the flange. The cap defines an interior space in communication with the interior channel of the flange with the cap attached to the flange. The valve assembly further includes at least one sealing valve, such as an umbrella valve, attached to an exterior of the cap and adapted to permit the passage of fluid from the interior space of the cap to an external environment.

Abstract: A liquid leak detection and prevention device comprised of a leak detection apparatus positioned near a water-dependent appliance to monitor for moisture due to a leak, and a leak prevention system connected to the leak detection apparatus in fluid communication with a water pipe attached to the water-dependent appliance and positioned in-line with the water pipe is disclosed.

Abstract: An example control valve includes a split valve body. The split valve body includes a first body portion, a second body portion, a flow path, an inlet port, and an outlet port. The flow path passes through the first body portion and the second body portion. The first body portion is coupled to the second body portion. The control valve also includes a valve seat. The valve seat is disposed between the first body portion and the second body portion. The control valve also includes a valve plug. The valve plug is movable relative to the valve seat to control fluid flow through the control valve.

Abstract: An anti-rat flap member for sewer/draining pipe check is removably attached to the valve body. The valve body defines an interior volume therein which is preferably substantially open and unobstructed (except for the flap member). The flap member acts both as a seal to prevent the back-flow of sewage/drainage water and is normally in a closed position to prevent the passage of rats. The flap member comprises a row of sharp projections attached by known means (such as integrally molded, glued, rivetted or screwed) to the outermost side of the flap member facing the downstream section of the valve. The projections must be at an angle to the surface of the sheet, preferably at an angle which will prevent the rodent from gnawing and biting or even lifting the flap member with their mouth.

Abstract: A swimming pool leveling system includes a bracket extending from a first end to a second end, the bracket having openings; a float valve having a body with a float positioned within an interior of the body, the float valve engaged with the bracket via an adjustment device; a pressure reducing valve engaged with the body and to receive a water source; and a base having a base body with an enclosed interior accessible via an opening, the enclosed interior configured to receive a weight, the base engaging with the bracket via one or more securement devices; the base is to rest on a surface such that the bracket extends the float valve into a pool; and the float valve to allow filling of the pool to a desired height.

Abstract: A pilot-operated pressure relief valve nozzle assembly and associated systems and methods are provided. In an exemplary embodiment, the nozzle assembly includes a body having an elongate shaft with an inner lumen extending therein and a flange at one end of the elongate shaft and having an annular notch formed therein. The annular notch is configured to seat an annular ring, and the annular notch includes an annular groove formed therein that enables communication between a first bore extending through the flange from the inner lumen to the annular groove and a second bore extending through the annular ring, thus allow the first and second bores to be radially offset from one another.

Abstract: A check valve assembly for a compressor or a vacuum pump includes a valve body adapted to receive a valve plate pivoting between a first open position and a second closed position. The valve body is connected to a discharge port of a compressor unit or to the intake port of a vacuum pump. A second fluid conduit is attachable to the valve body and is connected to an external network. The assembly includes a shaft and at least one bearing for connecting the valve plate to the valve body. The valve plate includes an elongated area having a hollow tube through which the shaft is inserted for rotatably mounting the valve plate. At least one bearing is positioned on the shaft within the hollow tube.

Abstract: A valve for one-way transfer of air from vacuum storage bags, including a body, a flat diaphragm made of a flexible material, and a holder for securing the diaphragm to the body; a central portion of the body includes an air passage; the diaphragm has a first position where the air passage is covered by a central portion of the diaphragm thus blocking air flow through the air passage, and a second position where the central portion of the diaphragm is reversibly moved away from the air passage thus allowing air flow through the air passage; the diaphragm is secured between the body and the holder, at its three or more distinct edge portions of the diaphragm. A vacuum storage bag equipped with the valve.

Abstract: A flapper check valve employed to prevent flow up the work string while allowing flow down the work string and into the well is disclosed. The check valve is activated by a compression spring, which then acts on a ball which will further act on a cam profile attached to the back of a flapper. The apparatus causes the flapper to default to the closed position when the flow is stopped, regardless of the position of the valve, even when gravity is acting against the flapper. The compression spring also allows for an apparatus which possesses lower operating stresses on the spring.

Abstract: A pressure relief valve includes a valve body including a monitored pressure inlet leading to a monitored pressure region, a piston having a shear seal bore and a surface facing the monitored pressure region, a vent passage and a the shear seal assembly comprising a seal plate having a sealing surface thereon, and the shear seal assembly includes a sealing surface facing the seal plate and having a first annular area, and a first surface having an annular surface area at least twice as large as the first area of the sealing surface, the first surface facing away from the first area, and a biasing seal in contact with the first surface.

Abstract: A self-sealing safety valve (10) for a container of pressurised fluid (12) comprises a substantially solid body (14) and attachment means (24) for connecting to a dispensing valve. The self-sealing safety valve includes a substantially central bore (16) extending through both the attachment means and the solid body, and the bore connects an inlet (20) to an outlet (18). The bore comprises at least three parts each of a different diameter: a first part (16a) immediately adjacent the outlet has a first diameter; a second part (16b) located immediately adjacent the first part has a second diameter that is wider diameter than the first diameter; and a third (16c) part located immediately adjacent the second part has a third diameter that is wider than the second diameter. The second part of the bore houses a first biasing means (30). The third part of the bore houses a sealing ball (28) and a second biasing means (38), and the sealing ball is located between the first and second biasing means.

Abstract: Embodiments relate to a check valve and methods of making a check valve that include a valve body having an inlet end, an outlet end, a flow bore that extends between the inlet and outlet ends, a cavity which intersects the flow bore, and an opening which is connected to the cavity.

Abstract: A microfluidic check valve includes an inlet bore, an internal chamber, an outlet bore, and a disk freely movable in the chamber between an open position and a closed position. At the open position, the disk permits fluid to flow from the inlet bore, through the chamber, and to the outlet bore. At the closed position, the disk prevents fluid from flowing in the reverse direction from the chamber into the inlet bore. The check valve may be positioned in-line with a fluid conduit, and/or incorporated with various fluidic devices such as, for example, capillary tubes, fittings, and chromatography columns. The check valve is capable of withstanding high fluid pressures, while featuring a small swept volume, such as a nano-scale volume. The check valve may be utilized, for example, to prevent fluid back flow and isolate pressure pulses in fluid flow systems.

Abstract: A check valve comprising a body, a ball movable within a ball area of the body, a seat for receiving the ball, and a magnet for exerting a magnetic force on the ball is provided. The ball and seat are changeable between a closed state and an open state, the closed state having the ball in sealing engagement with the step, and the open state having a portion of the step separated from the ball with a space therebetween.

Abstract: The disclosed apparatus may include a fluidic channel connecting an inlet port and an outlet port. The apparatus may further include a gate transmission element configured to limit fluid flow between the inlet port and the outlet port. Still further, the apparatus may include a primary gate terminal connected to a second fluidic inlet port, where pressure or force at the primary gate may at least partially control movement of the gate transmission element. The apparatus may also include a secondary gate terminal connected to the second fluidic inlet port. Pressure or force at the secondary gate may at least partially control movement of the gate transmission element. Various other associated methods, systems, and computer-readable media are also disclosed.

Abstract: A one way valve cartridge for a flow assembly includes a housing having an axial aperture formed therein. A leading ring is coupled to the housing. A piston is disposed in the housing and is in sliding relationship with the leading ring. The piston is configured to reciprocate between a closed position to seal the axial aperture and an open position to permit a flow of fluid through the axial aperture. A spring urges the piston into the closed position to seal with the housing.