A rotary disc valve is used to control fluid flow within a fluid delivery system. The valve may include a valve body having multiple ports that are connected to the system. In addition, the valve may include a diverter and seal assembly that are disposed in the valve body. The seal assembly includes first and second seal subassemblies. The first subassembly has first through openings that are axially aligned with the diverter through openings. The second subassembly is axially stacked with the first subassembly and includes second through openings that are axially aligned with valve body subchambers associated with the ports. A first static seal is disposed between the diverter and the first subassembly, a second static seal is disposed between the valve body and the second subassembly, and a dynamic seal is disposed between the first subassembly and the second subassembly.

A rotary disc valve is used to control fluid flow within a fluid delivery system. The valve may include a valve body having multiple ports that are connected to the system. In addition, the valve may include a diverter and seal assembly that are disposed in the valve body. The seal assembly includes first and second seal subassemblies. The first subassembly has first through openings that are axially aligned with the diverter through openings. The second subassembly is axially stacked with the first subassembly and includes second through openings that are axially aligned with valve body subchambers associated with the ports. A first static seal is disposed between the diverter and the first subassembly, a second static seal is disposed between the valve body and the second subassembly, and a dynamic seal is disposed between the first subassembly and the second subassembly.

A valve having a hollow body which extends along a main axis (X), in which at least one secondary body is arranged at one end of the hollow body substantially coaxial to the main axis (X) and has an inner end portion with a collar protruding towards the inner surface of the hollow body is disclosed. The hollow body has at least one annular groove in which a ring is arranged at least partially to prevent the movement of the secondary body towards the end of the hollow body, in which the ring is divided into at least two arcs configured to be inserted individually inside the groove of the hollow body to form the ring.

A valve device 3 includes a housing 2 and a valve body 4. The valve body 4 has a first switching position where a first supply port 31 and a first discharge port 33 communicate via an inner flow path 44 and a second supply port 32 and a second discharge port 34 communicate via an outer flow path 45, a second switching position where the first supply port 31 and the second discharge port 34 communicate via the outer flow path 45 and the second supply port 32 and the first discharge port 33 communicate via the inner flow path 44, a third switching position where the first supply port 31 and the first discharge port 33 communicate via the outer flow path 45 and the second supply port 32 and the second discharge port 34 communicate via the inner flow path 44, and a fourth switching position where the first supply port 31 and the second discharge port 34 communicate via the inner flow path 44 and the second supply port 32 and the first discharge port 33 communicate via the outer flow path 45.

An operation valve includes a valve that controls the flow of a fluid, a cylindrical operator that operates opening and closing of the valve by rotating the operator in a peripheral direction, and has a first step parallel to a central axis of the operator, a storage that stores the valve, includes a flow channel of the fluid therein, and has a second step corresponding to the first step on an outer periphery of the storage in a first state in which the valve is closed, and an elastic body that urges the operator toward the storage.

A housing has a housing main body that defines an internal space therein, an inlet port that fluidly connects the internal space and an outside of the housing main body to each other, and a relief port that fluidly connects the internal space and the outside of the housing main body to each other. Coolant water flows into the housing through the inlet port. A relief valve is disposed in the relief port and configured to selectively allow and block fluid communication between the internal space and the outside of the housing main body via the relief port by selectively opening and closing the relief port in accordance with conditions. A valve has a valve body rotatable about a rotation axis in the internal space, and a shaft disposed along the rotation axis. A covering portion is configured to cover the relief valve not to be visible through the inlet port.

A rotary disc valve is used in a fluid delivery system to control flow of fluid between multiple ports. The valve may include a valve body having multiple ports that are connected to the system. In addition, the valve may include a diverter and seal assembly that are disposed in the valve body. The diverter is configured to rotate about a rotational axis and to control fluid flow through the valve body in such a way that fluid enters the diverter in a first direction that is parallel to the rotational axis, fluid exits the diverter in a second direction that is parallel to the rotational axis, the second direction being opposite the first direction, and between entering and exiting, fluid flows over a portion of the diverter outer surface.

A rotary disc valve is used in a fluid delivery system to control flow of fluid between multiple ports. The valve may include a valve body having multiple ports that are connected to the system. In addition, the valve may include a diverter and seal assembly that are disposed in the valve body. The diverter is configured to rotate about a rotational axis and to control fluid flow through the valve body in such a way that fluid enters the diverter in a first direction that is parallel to the rotational axis, fluid exits the diverter in a second direction that is parallel to the rotational axis, the second direction being opposite the first direction, and between entering and exiting, fluid flows over a portion of the diverter outer surface.

A gas switching device incudes a valve body, a switching assembly, and a manipulating member. The valve body has an inlet portion having an inlet passage and an outlet portion having an outlet port and a receiving chamber. A wall of the receiving chamber has a side opening communicating with the inlet passage. The switching assembly includes a plug member located in the receiving chamber. The manipulating member is detachably connected to the outlet port via the connecting end connected to the plug member, and a gas passage of the connecting end communicates with an axial hole of the plug member. The manipulating member drives the plug member to turn between a first position that an outer peripheral surface of the plug member closes the side opening and a second position that the through hole communicates with the side opening.

A gas switching device incudes a valve body, a switching assembly, and a manipulating member. The valve body has an inlet portion having an inlet passage and an outlet portion having an outlet port and a receiving chamber. A wall of the receiving chamber has a side opening communicating with the inlet passage. The switching assembly includes a plug member located in the receiving chamber. The manipulating member is detachably connected to the outlet port via the connecting end connected to the plug member, and a gas passage of the connecting end communicates with an axial hole of the plug member. The manipulating member drives the plug member to turn between a first position that an outer peripheral surface of the plug member closes the side opening and a second position that the through hole communicates with the side opening.