Abstract: This application discloses a bidirectional vent valve, a battery, and an electrical device. The bidirectional vent valve includes: a valve seat, where the valve seat is configured to form a gas duct, and the gas duct includes a first end and a second end; a bidirectional valve assembly, where the bidirectional valve assembly is movably disposed in the gas duct, and is configured to open or close the gas duct through movement relative to the gas duct; and a first elastic component, configured to exert a force on the bidirectional valve assembly to close the air duct, and, when an air pressure difference between the first end and the second end of the gas duct is greater than a first threshold, the bidirectional valve assembly is configured to overcome the force of the first elastic component to open the gas duct.

Abstract: A manufacturing method of an end plate of a pump that can remove a sag includes: punching a workpiece from a plate material, the workpiece being the end plate including a mounting seat including a fastener; forming a pressed trace surface by pressing an outer edge of an outer surface, when a surface, of both front and back surfaces of the punched workpiece, further from a sag formed on a cut end surface is the outer surface, and a surface, of both front and back surfaces of the punched workpiece, nearer to the sag is an inner surface. A section of the pressed trace surface disposed along an outer edge of the mounting seat is a fastening section. A section of the pressed trace surface other than the fastening section is a non-fastening section. A radial width of the fastening section is shorter than that of the non-fastening section.

Abstract: An actuation chamber (2) provided in a housing (1) is communicatively connected to a supply and discharge port (6) via a pressurized oil supply and discharge passage (7). A valve case (11) of a sequence valve (10) is attached to an attachment hole (8) provided at an intermediate portion of the supply and discharge passage (7). A valve seat (25) is provided in a cylindrical hole (20) provided in the valve case (11). A valve member (26) is biased leftward toward the valve seat (25) by a pressure-setting spring (31). When pressure of pressurized oil supplied to a first portion of the supply and discharge passage (7) which is close to the supply and discharge port (6) exceeds a set pressure, the pressurized oil moves the valve member (26) rightward for valve opening, against the pressure-setting spring (31).

Abstract: An in-port sequencing valve configured to be utilized with a clamping device of a workpiece clamping system having a fixture plate, a number of fixture datums, and a number of clamping devices. The in-port sequencing valve includes a housing, a pre-load adjuster, a valve spring, and a valve piston. The pre-load adjuster is configured to be set to a selected valve activation setting. The valve spring is compressed an amount corresponding to the valve activation setting. The valve piston is configured to be shifted from a closed position to an open position when a force due to hydraulic fluid pressure overcomes a threshold spring force of the valve spring corresponding to the valve activation setting. The in-port sequencing valve can be set to a selected valve activation setting so that the clamping devices clamp the workpiece in a selected order according to the valve activation setting.

Abstract: A combination outlet valve and pressure relief valve includes an outer housing having a passage. An inner housing is located within the passage and includes a first bore extending thereinto from one end and a second bore extending thereinto from the other end such that the first bore and the second bore terminate at an inner housing wall. An outlet valve assembly is located within the first bore and includes an outlet valve member, an outlet valve seat, and an outlet valve spring grounded to the inner housing wall and biasing the outlet valve member toward the outlet valve seat. A pressure relief valve assembly is located within the second bore and includes a pressure relief valve member, a pressure relief valve seat, and a pressure relief valve spring grounded to the inner housing wall and biasing the pressure relief valve member toward the pressure relief valve seat.

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: 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.

Abstract: A system for determining a health status of a tank is provided. The system includes a temperature sensor, a pressure sensor, a sensor coupled to a hydraulic actuator, a breather valve, and a controller. The controller is configured to receive a signal indicative of a temperature and a volume of a fluid within the tank from the temperature sensor and the sensor coupled to the hydraulic actuator respectively. The controller is configured to determine an estimated pressure of the fluid within the tank based on the received signals and a breather performance curve. The controller is configured to receive a signal indicative of a pressure of the fluid within the tank and compare it with the estimated pressure. The controller is also configured to determine the health status of the tank and to actuate one or more of an operator console display unit and the hydraulic actuator.

Abstract: A high pressure container arrangement includes a reservoir having an outer wall and an over pressure relief orifice through which high pressure fluid may flow when the fluid pressure inside the reservoir exceeds a predetermined pressure threshold. The high pressure container arrangement also includes a pressure limiting valve having a housing in which is arranged a closing member permanently biased by a spring toward a closed position and, when the pressure in the reservoir exceeds the predetermined threshold the closing member is pushed in an open position. The housing of the pressure limiting valve is integral to the wall of the reservoir.

Abstract: A discharge valve (30) is provided in a high-pressure fuel passage (31) to allow fuel to pass through the discharge valve (30) only in a direction from a high-pressure fuel pump (20) toward a delivery pipe (50). A communication passage (41) with an orifice (42) is formed integrally with the discharge valve (30) in parallel with the discharge valve (30) to connect areas upstream and downstream of the discharge valve (30). When a fuel pressure in the delivery pipe (50) is increased to a target pressure using the high-pressure fuel pump (20), an amount of the fuel, which does not interfere with an increase in the fuel pressure, flows through the orifice (42). A check valve (40) is provided in the communication passage (41), and opened to allow the fuel to pass through the check valve (40) only in the direction from the delivery pipe (50) toward the high-pressure fuel pump (20), when the fuel pressure is higher than a first predetermined pressure.

Abstract: A pressure retention valve with integrated valve is disclosed. The pressure retention valve with integrated valve includes a housing; an outer piston positioned in the housing; a main seal between the outer piston and the housing; an inner piston positioned in the outer piston, the inner piston having a bore containing a valve; a spring between the housing and a top of the outer piston; an ambient bore in the housing above the main seal; an outlet in the housing below the main seal; and a vessel connection in the housing adjacent to the bore of the inner piston. Methods of supplying fuel to a gas consuming system using the pressure retention valve are also described.

Abstract: A pressure limiting valve comprises a valve closing body (7) which comprises a valve closing surface (8) which together with a first valve seat (9) opposing the valve closing surface (8) forms a first seal seat and a valve closing body orifice (11), which is surrounded by a second valve seat (12) which together with a closing head (14) configured on an axially displaceable valve bolt (13) forms a second seal seat and with a spring plate (15) which is connected to the valve bolt (13) and axially displaceable therewith, and a first return spring (10) clamped between the spring plate (15) and the valve closing body (7), which pretensions the valve bolt (13) against the second valve seat (12) configured on the valve closing body (7) and a second return spring (35) which pretensions a valve unit (7, 13, 15, 10) against the first valve seat (9). In the valve bolt (13) a longitudinal bore (53) is provided extending over the entire axial length of the valve bolt (13).

Abstract: A valve for use in regulating the flow of fluid between a first and a second fluid side is provided. The valve comprises a valve body and an aperture extending through the valve body. The aperture comprises an inner wall, a first aperture diameter at the first end of the aperture and a second aperture diameter at the second end of the aperture. The valve further comprises a first valve insert positioned in the aperture with a first insert diameter and a first mating feature. The first insert diameter is larger than the first aperture diameter. The valve further comprises a second valve insert having a first width, a second width and a second mating feature. The first width is larger than the second aperture diameter. The first mating feature cooperates with the second mating feature to engage the first valve insert to the second valve insert.

Abstract: A two-way check valve includes a sleeve, a connection head, a valve stem eject-rod, a first valve body, a second valve body, a first pressure adjustment module, a second pressure adjustment module and an intake connector. The sleeve is threaded over the valve stem eject-rod and the intake connector at opposite ends thereof, respectively. The connection head is disposed at the valve stem eject-rod. The sleeve has a first sleeve portion and a second sleeve portion. A first receiving chamber and a second receiving chamber are respectively defined in the first sleeve portion and the second sleeve portion. The first receiving chamber receives the second valve body therein. The second valve body is defined with a receiving room therein for receiving the first valve body and the first pressure adjustment module. The second receiving chamber receives the second pressure adjustment module.

Abstract: A valve apparatus is disclosed for use in regulating the flow of fluid between a closed hydraulic loop and a fluid source in a hydraulic circuit, where the valve apparatus provides up to four different functions including a check valve, a neutral valve, a relief valve and a pressure rise rate valve. The apparatus includes a valve seat for selectively permitting fluid communication between the closed hydraulic loop and the fluid source, a sleeve member and a relief poppet in the valve seat, a relief compression spring inside the sleeve and positioned adjacent the relief poppet and the base of the slidable member, a valve guide and an accumulator piston slidably mounted within the valve guide to define an accumulator volume therein.

Abstract: A lubricating oil supplying system for an internal combustion engine includes a lubricating oil storage section for storing lubricating oil. A driven pump is driven by the internal combustion engine to suck the lubricating oil from the lubricating oil storage section and discharge the lubricating oil to a discharge passage. An electric pump is provided for sucking the lubricating oil discharged from the driven pump to the discharge passage and discharge the lubricating oil to a lubricating oil requiring section in the internal combustion engine. A controlling mechanism is provided for drivingly controlling the electric pump in accordance with a control signal. A bypass passage is provided for bypassing the driven pump. A check valve is disposed in the bypass passage to allow the lubricating oil in the lubricating oil storage section to flow only through a path bypassing the driven pump and toward the discharge passage.

Abstract: A valve for use in regulating the flow of fluid between a first fluid side and a second fluid side of a hydraulic circuit. A bore is extended through a valve seat, and the bore and valve stem cooperate to form a fluid passage from the first side to the second side. A plurality of ribs are located on one side of the valve seat and extend in a direction generally parallel to the bore.

Abstract: A cut valve with a check valve includes a body case, a cap member, positive and negative pressure valves, and first and second springs. The body case defines a vent hole. The cap member is fitted to an upper portion of the body case. The positive pressure valve is made of resin, defines an opening part, and is disposed to be contactable with and separable from the vent hole from above. The first spring is disposed on the positive pressure valve and presses the positive pressure valve in a direction in which the positive pressure valve closes the vent hole. The negative pressure valve is made of resin and is disposed to be contactable with and separable from the opening part from below. The second spring presses the negative pressure valve in a direction in which the negative pressure valve closes the opening part.

Abstract: A valve arrangement in a hydraulic circuit comprises a longitudinal duct 3 and a transverse duct 2. A throttle slide 10 can be displaced in the direction of the longitudinal duct 3. Arranged in the throttle slide 10 is a valve piston 25, by means of which the flow through the hollow throttle slide 10 can be enabled or blocked. The flow of hydraulic fluid takes place through two groups of passage holes 33a, 35a, which are arranged in the throttle slide 10. The interaction of pressure and flow direction of the hydraulic fluid, and also the restoring force of a slide spring 20 and a piston spring 30, achieves a situation where hydraulic fluid can flow through the valve arrangement in both directions but that a throttling action occurs only when the hydraulic fluid flows from the transfer duct 2 to the longitudinal duct 3 under increased pressure.

Abstract: A combination valve for fuel delivery system of a vehicle having an engine, the fuel delivery system being configured to pump fuel to the engine and the fuel delivery system has a regulator for regulating the pressure of the fuel when it is being pumped to the engine by the fuel delivery system, the combination valve comprising: an outer housing defining an inner opening for slidably receiving a body portion of a system pressure relief valve therein, the body portion of the system pressure relief valve defining an inner opening for slidably receiving a body portion of a check valve therein, the body portion of the check valve being configured to provide a first fluid pathway in a first direction when the body portion of the check valve moves from a closed position to an open position as the body portion of the check valve moves in the first direction within the inner opening of the body portion of the system pressure relief valve, the body portion of the system pressure relief valve being configured to provid

Abstract: A shear valve for use in a fuel delivery system includes a valve body wherein a first end is adapted to be connected to a fuel inlet, and a second oppositely-disposed end is adapted to be connected to a fuel outlet. The valve body is provided with a readily frangible or separable region between the first and second ends. The first end has an emergency shut-off valve biased towards a closed position, and is normally held open by a displaceable abutment having one ball or roller.

Abstract: A fuel tank for a motor vehicle has means for delivering fuel from the tank to the engine, means for the introduction of air into and the venting of air from the tank, and a filler pipe which can be closed at its intake end and which at its outlet end into the interior of the tank has at least one valve which can sealingly close at least upon a blowback of fuel thereto. At least one second valve is disposed in the filler pipe in the region of the outlet end thereof. The first valve in the filler pipe can be bridged by way of the second valve.

Abstract: A pressure valve for installation in a feed line between a fuel injection pump and an injection site of an internal combustion engine to be supplied. The valve has at least one movable valve member, embodied as a valve ball, which can be brought by a restoring spring into contact with a valve seat A spring plate is provided between the restoring spring and the valve ball and has a spherical surface for guiding the valve ball, and a bearing face, remote from this spherical guide face, for the restoring spring. This spherical surface that guides the valve ball is intended to be interrupted at the spring plate.

Abstract: An apparatus is provided for equalizing pressure between a lubrication fluid for lubricating a pump and a combustion fluid located at a low pressure side of the pump wherein the pump has a rotatable shaft. The apparatus includes a wall defining a bore within the pump wherein a first end of the bore is configured to receive a lubrication fluid and a second end of the bore is configured to receive combustion fluid. An equalizing element is disposed within the bore for separating the lubrication fluid and the combustion fluid and may be at least partially movable in response to pressure differences caused, e.g., by differences in thermal expansion between the lubrication fluid and the combustion fluid.

Abstract: A one-piece check valve is provided for a fuel filler pipe connected to a vehicle fuel tank to provide a fuel filling passage communicated to the fuel tank. The check valve comprises a thin sheet of material shaped to comprise a mounting portion, a flapper valve and an intermediate connecting portion that connects the flapper valve and the mounting portion with the connecting portion being contoured so as to normally impart a spring bias to the flapper valve to close off the fuel filling passage. An elastomeric seal is fastened on the flapper valve or on the fill pipe in a manner to provide a liquid fuel and vapor tight seal when the flapper valve is in a closed position relative to the fuel filling passage. The flapper valve is opened when fuel is introduced into the fuel filler pipe to permit fueling of said tank.

Abstract: A pressure control valve for installation in a supply line between a pump work chamber of a fuel injection pump and an injection point in the engine to be supplied. A valve body that has a first valve seat and an axial through conduit in which a pressure control valve closing member is guided. The pressure control valve closing member opens toward the injection point counter to the force of a first valve spring and has a sealing face that cooperates with the first valve seat, as well as with an axial through bore in the pressure control valve closing member. The bore can be closed by a back-flow valve that opens in the direction of the pump work chamber and has a second valve spring. For an optimal, unthrottled fuel flow through the pressure control valve, fuel conduits are respectively formed between the radially outer circumference faces of the first and second valve springs and the housing walls that encompass them, through which conduit the fuel flows in an unthrottled fashion.