A gas pressure regulator includes a valve body and a valve cover. The valve cover is covered on the valve body. The valve body is provided with a valve cavity, and the valve cavity is connected to an air inlet channel and an air outlet channel. The valve cavity includes a primary pressure regulating cavity and a secondary pressure regulating cavity, and the primary pressure regulating cavity and the secondary pressure regulating cavity are communicated with each other through a valve port. The primary pressure regulating cavity is communicated with the air inlet channel, and a valve core pressure regulating assembly is disposed between the primary pressure regulating cavity and the air inlet channel. The secondary pressure regulating cavity is communicated with the air outlet channel. A lever pressure regulating assembly is disposed between the valve port and the secondary pressure regulating cavity.

The present disclosure relates to a valve assembly for controlling flow. The valve body has an inlet end and an outlet end. A piston is positioned within the valve body and is movable between an open position to open the valve body and a closed position to close the valve body. A spring is mounted between the piston and a spring adjustment member. A portion of the spring adjustment member is accessible through the inlet end of the valve body so as to be engageable by a tool to facilitate rotation of the spring adjustment member to vary compression of the spring to set a spring pressure rating.

A branch passage which branches off from a portion of a supply passage on the downstream side of a supply control valve and communicates with a suction chamber is provided, and when providing a release control valve which, while allowing working fluid to flow, moves in response to the differential pressure between the downstream side pressure of the supply control valve and the pressure of a control pressure chamber on the supply passage, while preventing the movement of a valve element from being inhibited by a foreign substance in refrigerant, a leakage of the refrigerant into a suction chamber is suppressed when supplying the refrigerant from a discharge chamber to the control pressure chamber via the supply passage, enhancing control performance. A release control valve 51 has a valve element 60 including a valve body 62 which, being disposed, in a valve housing space 50 provided on a supply passage 40, so as to be movable in an axial direction of the valve housing space 50, varies the degree of opening of the communication between a control pressure chamber 4 and a branch passage 43, and a flange 63 which is abutted, in an axial direction of the valve housing space, against a shoulder 52 formed on the inner peripheral wall of the valve housing space 50, thereby sealing between the valve body 62 and the inner peripheral wall of the valve housing space 50, wherein a configuration is such that the branch passage 43 is covered by the valve body 62 in a state in which the flange 63 is abutted against the shoulder 52.

A branch passage which branches off from a portion of a supply passage on the downstream side of a supply control valve and communicates with a suction chamber is provided, and when providing a release control valve which, while allowing working fluid to flow, moves in response to the differential pressure between the downstream side pressure of the supply control valve and the pressure of a control pressure chamber on the supply passage, while preventing the movement of a valve element from being inhibited by a foreign substance in refrigerant, a leakage of the refrigerant into a suction chamber is suppressed when supplying the refrigerant from a discharge chamber to the control pressure chamber via the supply passage, enhancing control performance. A release control valve 51 has a valve element 60 including a valve body 62 which, being disposed, in a valve housing space 50 provided on a supply passage 40, so as to be movable in an axial direction of the valve housing space 50, varies the degree of opening of the communication between a control pressure chamber 4 and a branch passage 43, and a flange 63 which is abutted, in an axial direction of the valve housing space, against a shoulder 52 formed on the inner peripheral wall of the valve housing space 50, thereby sealing between the valve body 62 and the inner peripheral wall of the valve housing space 50, wherein a configuration is such that the branch passage 43 is covered by the valve body 62 in a state in which the flange 63 is abutted against the shoulder 52.

A coaxial liquid pressure regulator includes a housing having an inlet portion and an outlet portion, a substantially tubular valve member slidingly accommodated inside the housing and having a longitudinal axial passage and an upstream end with an inlet edge for the liquid, a valve body fixed inside the inlet portion and defining a seat that interacts with the inlet edge of the valve member and forms therewith a port having a variable width. The inlet portion includes an inlet fitting and a collection chamber directly downstream from the inlet fitting and the valve body includes a cantilever element transversely extending from the inner wall of the collection chamber. First and second deflection elements are arranged between the inlet fitting and the inlet edge, which facilitate flow conveyance toward the port and the longitudinal passage of the valve member.

A coaxial liquid pressure regulator includes a housing having an inlet portion and an outlet portion, a substantially tubular valve member slidingly accommodated inside the housing and having a longitudinal axial passage and an upstream end with an inlet edge for the liquid, a valve body fixed inside the inlet portion and defining a seat that interacts with the inlet edge of the valve member and forms therewith a port having a variable width. The inlet portion includes an inlet fitting and a collection chamber directly downstream from the inlet fitting and the valve body includes a cantilever element transversely extending from the inner wall of the collection chamber. First and second deflection elements are arranged between the inlet fitting and the inlet edge, which facilitate flow conveyance toward the port and the longitudinal passage of the valve member.

A valve including a valve body; an adjusting assembly having an actuating portion and a regulating part; a flood prevention device at least partly located in the valve body, with the flood prevention device having a regulating portion; and a relief aperture defined through a wall of the regulating part to assist in reducing pressure on the regulating portion when the regulating portion moves to a closed position.

A valve including a valve body; an adjusting assembly having an actuating portion and a regulating part; a flood prevention device at least partly located in the valve body, with the flood prevention device having a regulating portion; and a relief aperture defined through a wall of the regulating part to assist in reducing pressure on the regulating portion when the regulating portion moves to a closed position.

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 assembly with a spring retention assembly including an elongated cylinder portion having an open threaded end and a closed end and an elongated piston portion having a free end and a threaded tab end configured to thread through the open threaded end and, thereby, be slideably captured in the cylinder portion. A spring couples to the body portion and the piston portion to provide a force to urge the body portion and the piston away from one another, wherein the closed end and the free end are similarly shaped so that the spring retention assembly can be reversibly mounted to a valve member that can also be reversibly mounted.