A piloting section of a solenoid valve is integrated with a valve section and includes a tubular stem having a distal end placed in communication with the atmosphere and axially displaceable by the solenoid from a receded position, in which a shutter of the valve section is kept in a closing condition, to an advanced position corresponding to an opening condition of the shutter. The shutter has a hollow plunger coaxial with a tubular stem and defining an inner thrust chamber in which, in operation, in the receded position of the tubular stem a fluid pressure—which keeps the shutter in closing condition and which is released into the atmosphere—is applied to displace the shutter to the opening condition, through the proximal end of the tubular stem when it is displaced by the solenoid to the advanced position.

A fuel tank isolation solenoid valve for a vehicle is provided. The fuel tank isolation solenoid valve may include a first plunger configured to be vertically movable and a second plunger configured to move along a plunger rotation path such that the plunger is mechanically maintained in an opened position or a closed position while no power is applied to a coil.

A valve unit includes a first solenoid valve for a first fluid in a first channel; a first branch channel branched from the first channel on the upstream side of the first supply-side solenoid valve; a first branch-side switching valve for the first fluid in the first branch channel; a second solenoid valve for a second fluid in a second channel; a second branch channel branched from the second channel on the upstream side of the second solenoid valve; a solenoid switching valve for the second fluid in the second branch channel; a reception channel to receive a fluid from a first outlet opening or a second outlet opening to flow through a predetermined area and returns; first and second circulation channels bifurcated from the reception channel; a first circulation-side solenoid valve for the first circulation channel; and a second circulation-side solenoid valve for the second circulation channel.

A piloting section of a solenoid valve is integrated with a valve section and includes a tubular stem having a distal end placed in communication with the atmosphere and axially displaceable by the solenoid from a receded position, in which a shutter of the valve section is kept in a closing condition, to an advanced position corresponding to an opening condition of the shutter. The shutter has a hollow plunger coaxial with a tubular stem and defining an inner thrust chamber in which, in operation, in the receded position of the tubular stem a fluid pressure—which keeps the shutter in closing condition and which is released into the atmosphere—is applied to displace the shutter to the opening condition, through the proximal end of the tubular stem when it is displaced by the solenoid to the advanced position.

A valve arrangement for a switching valve and to a switching valve for regulating a mass flow in a refrigerating circuit or a heating circuit, including a valve housing, which includes a feed opening and a discharge opening, including a valve piston, which includes a valve-closing member, which buts against a through-hole between the feed opening and the discharge opening in a closed position on a valve seat and closes the through-hole, wherein the valve seat includes a stop surface and a sealing surface which are oriented so as to be adjacent to one another, the valve-closing member includes a supporting surface and a gasket surface which are oriented so as to be adjacent to one another, an elastic sealing element is provided on the valve seat or the valve-closing member, on which sealing element the sealing surface or gasket surface is formed, a sealing projection is provided on the sealing surface or the gasket surface and is oriented towards the opposite gasket surface or sealing surface, the supporting surface of the valve-closing member and the stop surface of the valve seat but against one another in the closed position and form a travel limitation between the valve-closing member and the valve seat, and the sealing projection is at least partially pressed into the sealing element.

A valve system includes a handle shell, an airtight seat, an underwater seat, a sealing deformation, a shell, a manual switch and a lower cover. The handle shell may include a touch/induction switch to control the system for adjusting temperature in ceramic valve core with a touch. The system may include two mode of operation, an induction control mode and a manual control mode. The induction control mode may be enabled when a touch/induction switch inlet is coupled to the lower cover and a first water inlet and a second water inlet. The induction controls the opening and closing of the push rod. Further, the manual control mode may be enabled when a manual switch is coupled to the first water inlet and a second water inlet. The manual operation controls the opening and closing of the push rod.

A valve override assembly, comprising: a housing comprising a first portion including a cavity and a second portion. The first portion and the second portion arranged along an axial direction. A core arranged at least partially within the cavity of the first portion of the housing, wherein the core is movable with respect to the housing along the axial direction and comprises a first engagement portion. An override member arranged at least partially within the second portion of the housing such that the override member is movable with respect to the housing along the axial direction.

A solenoid valve may have a fixed member having a tube portion. The valve may also have a mobile plunger positioned in the tube portion, the mobile plunger being axially movable between a first and a second position. The valve may also have a rod coupled to the mobile plunger and having a spool for control of fluid flow, the rod being axially movable in the tube portion. The valve may also have an electromagnetic coil positioned externally to the fixed member, where the rod has a coupling end and the mobile plunger has a coupling element where the coupling end hookingly couples to the coupling element.

A fluid management assembly. The fluid management assembly comprises a valve body, a first chamber, a second chamber, a first flow passage, a second flow passage, a third flow passage and a fourth flow passage, wherein the first flow passage, the second flow passage and the third flow passage have openings in an outer wall of the valve body; the valve body is provided with the second chamber, the second flow passage and a first passage; and the first passage can communicate the first chamber and the second chamber. The fluid management assembly is provided with a plurality of channels, the first chamber and the second chamber.

The invention relates to a proportional valve (1) for controlling a gaseous medium, in particular hydrogen, comprising a valve housing (2), wherein an interior space (9) is formed in the valve housing (2). A first closure element (16) is arranged in the interior space (9), wherein the first closure element (16) cooperates with a first valve seat (19) for opening or closing a first through-opening (14). In addition, a second closure element (36) is arranged in the interior space (9), wherein the second closure element (36) cooperates with a second valve seat (29) for opening and closing a second through-opening (20). The first valve seat (19) is formed on the second closure element (36), wherein the first through-opening (14) feeds into the second through-opening (20).