A valve has a housing that delimits an interior, a first connection, a second connection, a passage that fluidically connects the first and second connections, first and second closing elements received in the interior and surrounding an intermediate space connected to a third connection, and an adjustment device that, in a closed position, brings the first closing element into sealing contact with a first valve seat formed in the passage and the second closing element into sealing contact with a second valve seat formed in the passage. The first closing element is sealingly received in the second closing element. For cleaning, the adjustment device forms a gap that connects the intermediate space to the interior, between the first and second closing elements and simultaneously releases the first and second closing elements from the first and second valve seats in an open position. A cleaning method is also described.

A fuel system having a fuel tank, a filler pipe for adding liquid fuel, a carbon canister for collecting fuel vapors from the fuel tank during a refueling operation, a stepper motor and a stepper driven valve for controlling fluid communication between the fuel tank and the canister, where the valve is configured to be positionable in a closed position, an open position creating a passageway with a first size, and one or more intermediate positions each creating a passageway with a size which is smaller than the first size and having a moving element, movable relative to a valve opening between a closed position and an opened position, the moving element having: a sealing means for making a leak tight seal and, a deflecting means for controlling the fluid flow, where the deflecting means protrudes inside the valve opening and is adapted to be located upstream relative to sealing means.

A valve for pressurized fluid having a body housing a fluid circuit having an upstream end configured to be placed in communication with a reserve of pressurized fluid and a downstream end configured to be placed in communication with a user of fluid, the circuit having a collection of valve shutter(s) having at least one shutoff valve shutter allowing the circuit to be closed or opened, the valve having a member for manually controlling the collection of valve shutter(s), the control member being mounted to allow the body to move between a rest position in which the collection of valve shutter(s) is in a position in which the circuit is closed and an active position in which the control member actuates the collection of valve shutter(s) into a position in which the circuit is open with a first bore section

A high flow/low flow valve includes a valve body having a fluid inlet and a fluid outlet connected to one another by a fluid passageway. A valve seat is disposed in the fluid passageway. A low flow valve plug is disposed in the fluid passageway proximate valve seat, the low flow valve plug cooperating with the valve seat to control fluid flow through the valve seat. A high flow valve plug is disposed in the fluid passageway proximate valve seat, the high flow valve plug cooperating with the valve seat to control fluid flow through the valve seat. A low flow actuator is operatively connected to the low flow valve plug and a high flow actuator operatively connected to the high flow valve plug.

A high flow/low flow valve includes a valve body having a fluid inlet and a fluid outlet connected to one another by a fluid passageway. A valve seat is disposed in the fluid passageway. A low flow valve plug is disposed in the fluid passageway proximate valve seat, the low flow valve plug cooperating with the valve seat to control fluid flow through the valve seat. A high flow valve plug is disposed in the fluid passageway proximate valve seat, the high flow valve plug cooperating with the valve seat to control fluid flow through the valve seat. A low flow actuator is operatively connected to the low flow valve plug and a high flow actuator operatively connected to the high flow valve plug.

The invention concerns a circuit intended to transfer, by means of a pump, first fluid, such as an aqueous urea solution, from a reservoir to an injector, said circuit also containing a second fluid, such as air, and said circuit comprising, downstream of the pump and of the reservoir, a downstream circuit portion which includes, on the one hand, a main branch which leads to the injector and, on the other hand, bypass branch which returns to the reservoir and which is provided with a double-seat valve designed to selectively and automatically adopt: purge configuration allowing to purge the second fluid through the valve out of the main branch, a pressurized supply configuration allowing to direct the first fluid to the injector under a predetermined working pressure, and a recirculation configuration allowing a recirculation through the bypass branch, and to the reservoir, of the first fluid coming from said reservoir.

A sealing diaphragm for a fluid valve is provided. The fluid valve includes a valve housing and a drive unit, the sealing diaphragm being of hat-like design and being configured for enclosing, on the free-end side, a portion of a valve-closing body which projects into the valve housing of the fluid valve. The sealing diaphragm can include a base portion which is configured to be rotationally asymmetrical on the outer circumferential side, the base portion being provided to abut in a form-fitted manner against an opening of the valve housing, and the base portion of the sealing diaphragm being configured to be received between the valve housing and the drive unit in such a way that the opening of the valve housing is sealed in a fluid-tight manner towards the drive unit.

A sealing diaphragm for a fluid valve is provided. The fluid valve includes a valve housing and a drive unit, the sealing diaphragm being of hat-like design and being configured for enclosing, on the free-end side, a portion of a valve-closing body which projects into the valve housing of the fluid valve. The sealing diaphragm can include a base portion which is configured to be rotationally asymmetrical on the outer circumferential side, the base portion being provided to abut in a form-fitted manner against an opening of the valve housing, and the base portion of the sealing diaphragm being configured to be received between the valve housing and the drive unit in such a way that the opening of the valve housing is sealed in a fluid-tight manner towards the drive unit.

The disclosure relates to a pressure regulating device for vehicle. A gas pressure regulating device for vehicle includes a valve seat and a valve cavity housing. The valve seat is provided with a valve core insertion hole, and a bottom of the valve core insertion hole is provided with a valve port. The valve cavity housing is detachably assembled with the valve seat. A valve core is guided and assembled in the valve cavity housing, the valve core has an inserted segment, the inserted segment is inserted in the valve core insertion hole, and the valve core is provided with a flow channel. An insertion sealing ring is provided between a hole wall of the valve core insertion hole and an outer peripheral surface of the inserted segment of the valve core. The valve seat and the valve cavity housing are relatively translated in an axial direction of the valve core insertion hole and are assembled in place in a relatively translational manner. A fixed structure is provided between the valve seat and the valve cavity housing, and the fixed structure is configured to relatively fix the valve seat and the valve cavity housing when the valve seat and the valve cavity housing are assembled in place.

A valve seat includes a first end; a second end positioned opposite from the first end; and a body extending from the first end to the second end, the body defining an inner surface and an outer surface, the inner surface defining a main bore extending through the body from the first end to the second end, the main bore defining a main bore axis, the body defining a shaft bore extending from the inner surface to the outer surface, the shaft bore defining a shaft bore axis positioned perpendicular to the main bore axis, the shaft bore defining an inner shaft opening and an outer shaft opening, the body defining a concave seat bearing surface extending around the inner shaft opening.