Abstract: One or more techniques and/or systems are disclosed for bypass flow filtering. A bypass valve filter includes at least one wall configured to engage a surface of a bypass valve and a filter surface having a plurality of openings between an inside of the at least one wall and an outside of the at least one wall. One or more openings of the plurality of openings have a first size and one or more other openings of the plurality of openings have a second size, wherein the first size is different than the second size to define different levels of filtering. The bypass valve further includes an open end configured to allow fluid flow therethrough and to the plurality of openings.

Abstract: A self closing tap (102) comprising a cartridge (12) and a tap handle interface is disclosed. The cartridge (12) comprises a piston (122), and a plunger (32). The piston (122) is comprised of a piston head (124), and a piston shaft (126), the piston shaft (126) has a longitudinal axis (A) and is fixed to the piston head (124) at a first end, and the second end of the piston shaft (126) is an engagement end (182). The plunger (32) is movably fixed to a first portion of the piston shaft (126) and adapted to move longitudinally along the first portion of the piston shaft (126).

Abstract: A valve assembly for an exhaust system of a vehicle comprises a housing defining an inlet, an outlet, and a longitudinally extending exhaust gas passageway in fluid communication with the inlet and the outlet. The valve assembly further comprises a valve flap disposed in the housing and rotatable between a first position restricting exhaust gas flow through the exhaust gas passageway, and a second position whereat exhaust gas flow through the exhaust gas passageway is less restricted. A mass damper is disposed within the exhaust gas passageway and attached to the valve flap. The mass damper includes end portions and an intermediate portion disposed between the end portions with the intermediate portion having a thickness that is greater than a thickness of the end portions. The mass damper is positioned proximate an inner surface of the housing and positioned between the valve flap and the housing when the valve flap is at the second position.

Abstract: A pressure relief valve is disclosed with a first stage valve that is in series with a second stage valve, with an enclosed cavity between the first stage valve and the second stage valve. The first stage valve relieves pressure from an enclosure into the enclosed cavity between the stages, when the pressure is above a cracking pressure of the first stage valve. The second stage relieves pressure from the enclosed cavity when the pressure is above the cracking pressure of the second stage valve.

Abstract: A pinch clamp and mount are provided. The pinch clamp includes a first member and second member including rounded pinch surfaces. The second member is pivotably coupled to the first member at a first end. A threaded shaft is pivotably coupled to a second end of the first member. A second end of the second member includes a seat configured to receive the threaded shaft and a nut thereon. The seat includes protrusions at the second end that prevent the nut from sliding out of the seat. The mount includes a body having a flat bottom surface. An internal wall defines a through hole in the flat bottom surface. Two guide rails on a top surface of the body define a central slot configured to receive the clamp. A pair of keyed slots within the two guide rails are configured to receive a pair of keyed projections on the clamp.

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: Embodiments of air admittance valve assembly and plumbing system incorporating the same are provided herein. In some embodiments, a valve assembly to allow or stop a flow for use with enclosed environment includes a housing having, an inlet disposed at a first end of the housing fluidly coupled to environment surrounding housing, an outlet disposed at a second end of housing fluidly coupled to enclosed environment, and an interior volume divided into a first zone, a second zone, and a third zone; a first valve having a first valve seat and a first sealing member urged by an existing force between a closed or open position; and a second valve having a second valve seat and a second sealing member urged by an existing force between a closed or open position.

Abstract: An embodiment includes a valve comprising: a valve channel that couples a valve input to a valve output; a one-way valve included within the channel; a filter; a first pressure relief port, wherein the first pressure relief port is configured to relieve negative pressure when pressure at the valve output is less than pressure at the valve input; a second pressure relief port, wherein the second pressure relief port is configured to relieve positive pressure when pressure at the valve output is greater than pressure at the valve input; wherein the one-way valve includes a monolithic portion that simultaneously seals the channel, the first pressure relief port, and the second pressure relief port; wherein the filter covers the first pressure relief port.

Abstract: Flow control valves may be positioned downstream of water meters to increase pressure and compress entrained water vapour passing through the meters. However, turbulence within such valves can cause the valve's head to move radially, bending a shaft within the valve which may break. Accordingly, there is provided a flow control valve comprising: a housing having a flow passage; a valve seat defined within the flow passage; a valve head moveable to a closed position to engage the valve seat and seal the flow passage; a shaft secured to the valve head; a support slidingly mounting the shaft within the housing; a spring biasing the valve head to the closed position and configured to maintain the valve head in the closed position until a predetermined pressure is applied; and a guide assembly extending along at least a portion of the flow passage to constrain radial movement of the valve head.

Abstract: A control valve that 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: A valve unit has a plate-shaped valve body with a closure section and a connection section. The valve body has a cutout surrounded by a frame. The closure section has a closure tab that, beginning at a first fastening section at the frame, projects into the cutout. The connection section, beginning at a second fastening section at the frame, projects into the cutout and has a contact tab and a fastening point. The first and second fastening sections are arranged opposite each other at the frame along a longitudinal axis of the valve body. A filter head for the valve unit has a valve seat for a seal body of the closure section of the valve body. A fastening pin of the filter head fastens the connection section of the valve unit. A contact region of the filter head contacts a positioning region of the valve unit.

Abstract: A faucet device includes a hot water/water mixing valve, a water purification cartridge, a primary side flow path that supplies water to the hot water/water mixing valve and the water purification cartridge, and a secondary side flow path that discharges mixed water flowing out from the hot water/water mixing valve and purified water flowing out from the water purification cartridge to a water discharge port. The primary side flow path and the secondary side flow path are disposed between the hot water/water mixing valve and the water purification cartridge.

Abstract: A damped check valve having multi-pressure operation is provided. The check valve includes a liner with a poppet movable within the liner. The liner defines a flow passage aligned along a longitudinal axis defined by the liner. A biasing element is operably coupled between the poppet and the liner to bias a first flow face of the poppet against an annular seat. The first flow face is configured such that a first fluid pressure is required to move the poppet from the closed position to an open position wherein the poppet is unseated from the annular seat and a second fluid pressure is required to hold the poppet in the open position, the second pressure being less than the first pressure. There is a sufficient diametrical clearance between the poppet and the liner which allows for flow control at pressures which are less than the initial opening pressure.

Abstract: A check valve may be used to enable desired flow rates of fluid in a particular direction. In some examples, the check valve may have a hollow cylindrical body and a threaded portion on an exterior wall of the hollow cylindrical body such that the check valve may be coupled with an assembly, such as an adapter for a vehicle engine. The check valve may include a plunger having a dome shaped portion (e.g., cone shaped, semi-hemispherical shaped, rounded cone shaped, etc.) that extends out of the hollow cylindrical body into free space when the check valve is in an open position and forms a seal with the hollow cylindrical body when the check valve is in a closed position.

Abstract: A faucet aerator comprises: a casing and a guiding member. The casing has a water inlet 11 and a water outlet. The water inlet is provided with a threaded portion for engaging with a faucet. The casing is further provided with at least one ring groove at an inner surface for engaging with the guiding member. The guiding member has a barrel body with a pre-filter, and the pre-filter is provided with at least one ring rib for engaging with the ring groove when the guiding member is placed in the casing, to avoid the guiding member from escaping the casing while the aerator is cleaned. The barrel body provided with a plurality of through apertures, a bottom mesh, and a first aerating mesh.

Abstract: A bypass plunger includes a unibody, or one-piece hollow body and valve cage, retains a dart valve within the valve cage portion using a threaded retaining nut secured by crimple detents, and includes sealable flow parts. A series of helical grooves surround the central portion of the outer surface of the hollow body of the plunger to control spin during descent. A canted-coil-spring disposed within the retaining nut functions as a clutch. The valve cage includes ports that may be configured to control flow through the plunger during descent. Other embodiments include clutch assemblies using canted-coil springs with split bobbins, and surfaced valve stems surfaced.

Abstract: A thin profile gas transporting device includes a gas collecting plate, a valve sheet, a discharge sheet, and a gas pump. The gas pump is disposed on the gas collecting plate. The gas collecting plate, the valve sheet, and the discharge sheet are stacked and assembled sequentially. Through simplifying the structures of the gas collecting plate and the discharge sheet, the thicknesses of the gas collecting plate and the discharge sheet can be reduced. Moreover, through the arrangement of several pressure relief holes, the pressure relieving operation can be performed rapidly and quietly.

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

Abstract: An inflatable air mattress system comprises an inflatable air mattress defining an air chamber and including an inlet passageway, an inflation valve mounted to the inflatable air mattress, and a connector. The valve defines a passageway that includes a lip and a valve member. The valve member includes a seal movable between a closed position wherein the valve member is at least partially covering the lip. In an open position, inflation air can pass through the passageway and into the air chamber of the mattress. The inflatable air mattress system includes an inflating bladder including an interior portion defined by at least one wall of flexible fabric having a first end and a second end. The first end includes a wide opening securable by a closing spring, the second end includes an outlet adapted to connect to the connector.

Abstract: The present disclosure pertains to a system configured to protect flows in piping systems using minimal spare components. Some embodiments may provide: a first piping subsystem configured to receive a portion of the input flow; a second piping subsystem configured to receive the portion of the input flow by substituting for the first subsystem; a test subsystem configured to detect whether each of the first and second subsystems is able to vent when at least one, in the each subsystem, of a respective pressure and a respective pressure rate satisfies first and second criteria, respectively; and first and second pilots configured to detect a maximum pressure and a maximum pressure rate, respectively, of the portion of the first and second subsystems.