The present disclosure discloses an electromagnetic regulating valve with a check function. The valve may effectively regulate the flow in a valve body. Due to different lengths and taper angles of a valve flap group, the flow can be regulated more finely, and a medium can be prevented from backflow by a check function when necessary. Meanwhile, a mesh structure of bases of valve flaps can effectively reduce the instability of flow field motion so as to achieve an effect of rectifying.

A regulator arrangement for an inflatable includes a regulator housing comprising a bore, the bore comprising a longitudinal axis, a piston disposed in the bore and configured to translate, with respect to the regulator housing, along the longitudinal axis, an adjuster plug disposed in the bore and axially adjacent the piston, an adjuster plug stop disposed at least partially within the bore, and a spring member disposed between the adjuster plug and the piston. The adjuster plug comprises a tapered head and a shaft portion extending from the tapered head. The adjuster plug stop comprises a tapered surface configured to contact the tapered head.

A diaphragm valve for gas analysis applications is provided. The valve includes a valve cap provided with a plurality of process conduits extending therethrough, a valve body engageable with the valve cap and having a body interface provided with a recess, a diaphragm positioned between the valve cap and valve body and having a process groove for circulating fluid therein, the process groove engaging the recess, a plunger assembly provided within the valve body, the plunger assembly comprising a plurality of plungers movable between a closed position wherein the plunger engages the diaphragm, and an open position wherein the plunger is spaced from the diaphragm, and an actuating assembly comprising a gas inlet to allow the injection of actuating gas therein, the actuating assembly comprising a purging system for purging a region located between the diaphragm and the body interface, whereby the actuating gas is used for purging the region.

Disclosed is a fluid unidirectional flow structure. The fluid unidirectional flow structure (100) comprises; a first flow-checking body (110) and a second flow-checking body (120); the first flow-checking body (110) comprises a first connection portion (111) that is interconnected with a first flow portion (112) having at least one first through-hole (113); the second flow-checking body (120) comprises a second connection portion (121) interconnected with a second flow portion (122) having at least one second through-hole (123); when a fluid reverses directions, at least part of the first flow portion (112) moves relative to at least part of the second flow portion (122). The fluid unidirectional flow structure (100) may be designed in any shape, so as to facilitate installation. Also disclosed are a check assembly, and a respiratory device, when used on a breathing passageway, the invention may be adapted to a respiratory passageway of any size and shape. The fluid unidirectional flow structure (100) may also be installed on the body of a respiratory isolation mask (1000), wherein the shape of said mask may be adapted to the shape of the face of a person or animal. The shape of the first flow-checking body (110) and of the second flow-checking body (120) may be configured to be adaptable, so as to better bring into play the function and utility of the fluid unidirectional flow structure.

An evaporator incorporated into a transportation machine includes: heat exchange units aligned in a horizontal direction in the transportation machine placed on a horizontal surface and whose positions change together; distribution conduits connected respectively to the heat exchange units to supply a working fluid in a liquid phase to the heat exchange units; and valves disposed respectively in the distribution conduits to block passage of the working fluid flowing from the heat exchange units toward the distribution conduits at least when a tilt of the heat exchange units is equal to or greater than a predetermined threshold. Each heat exchange unit includes: an inlet portion connected to the distribution conduit; and a heat exchange portion that includes at least one heat exchange path extending straight upward from the inlet portion and that allows the working fluid passing through the heat exchange path to exchange heat with the heat source.

The disclosure discloses a charging valve, an air conditioning system and an electric vehicle. The charging valve includes: an outer valve body including a first inner cavity, the outer valve body is provided with a connection port in communication with the first inner cavity; an inner valve body movably installed in the first inner cavity, the inner valve body has a sealing position for closing the connection port and a charging position for opening the connection port, and the inner valve body is provided with a second inner cavity; and a valve core assembly, installed in the second inner cavity. The inner valve body of such a charging valve realizes the isolation of the valve core assembly from the connection port. A problem that air enters the air conditioning system in a vacuum state or that leakage appears in the valve core assembly is avoided.

A valve for a refrigeration system includes a valve body, a guide seat arranged in the valve body, a piston plug that has a metering slot and is axially movable relative to the guide seat to open and close the valve, and an adjustable valve stem that is axially movable to engage the piston plug. The piston plug is movable between a closed position in which the piston plug is seated against the guide seat and engaged with the valve stem to prevent fluid flow through the valve, a metering position in which the piston plug is moved away from the guide seat and engaged with the valve stem to enable a predetermined amount of forward fluid flow through the valve, and a check valve position in which the piston plug is seated against the guide seat to prevent reverse fluid flow through the valve.

In accordance with at least one aspect of this disclosure, a system includes, a first moveable member disposed in a first chamber configured to move between a first position and a second position of the first moveable member to allow or prevent fluid from passing from an inlet of the first chamber to an outlet of the first chamber. A second moveable member is disposed in a second chamber configured to move between a first position and a second position of the second moveable member to allow or prevent fluid from entering a biasing chamber, the second chamber being fluidly connected to the first chamber.

In accordance with at least one aspect of this disclosure, a system includes, a first moveable member disposed in a first chamber configured to move between a first position and a second position of the first moveable member to allow or prevent fluid from passing from an inlet of the first chamber to an outlet of the first chamber. A second moveable member is disposed in a second chamber configured to move between a first position and a second position of the second moveable member to allow or prevent fluid from entering a biasing chamber, the second chamber being fluidly connected to the first chamber.

The present invention provides an unloading valve assembly that configures a compression area divided for each control input and opens a valve seat by a pressurizing rod of a piston that performs pressurization by a control input, thereby quickly and accurately exhausting compressed air through the unloading valve assembly and improving durability when closing the valve.