An outlet valve includes a valve body, a solenoid valve, and a manual operating member. The valve body includes a water inlet, a water outlet, a water storage cavity, a drain waterway, a first waterway, a second waterway, and a waterproof membrane. The first waterway is coupled to the drain waterway through a first drain opening. The second waterway is coupled to the drain waterway through a second drain opening. The waterproof membrane is configured to separate the water outlet cavity from the water storage cavity. The first waterway comprises a first plug coupled to an output end of the solenoid valve. The first plug is configured to control the opening and closing of the first drain opening. The second waterway comprises a second plug coupled to the manual operating member. The second plug is configured to control the opening and closing of the second drain opening.

A valve block for hydrogen gas includes a valve block body having an outer surface on which an aluminum anodizing treatment has been performed, and a flow channel for hydrogen gas formed in the valve block body, and the flow channel has a sealing face in an inner face, and the sealing face is a machined face.

Embodiments of the disclosure relate to a system designed to compensate for flow disturbances when changing a flow rate in the system. The system includes a flow source device having an inlet and an outlet. The inlet is configured to receive fluid at a first pressure, and the outlet is configured to output the fluid at a second pressure that is higher than the first pressure. The system also includes a fluid control device having an inlet port and a drain port. The inlet port of the fluid control device is configured to receive flow from the outlet of the flow source device. Further, the system includes a constant flow regulator configured to provide a leakage flow to a drain output. The constant flow regulator is configured to decrease the leakage flow in response to the drain port of the fluid control device.

A valve assembly for an anti-ice system of an aircraft. The valve assembly comprises: a valve body; a first piston; and a regulating piston. The valve body defines a valve inlet, a valve outlet, a fluid passage between the valve inlet and the valve outlet, and a core portion defining a first chamber by cooperation with the first piston and a regulating chamber by cooperation with the regulating piston. The first piston is moveable between a first position and a second position, and the regulating piston is movable between a first position and a second position. The first piston overlaps the regulating piston when the first piston is its first position and the regulating piston is in its second position.

Pressure-reduction devices for fluid systems are disclosed. An example device includes a housing defining an axial fluid passageway between an inlet and an outlet. A first plate is fixed to the housing and positioned in the axial fluid passageway. A second plate is positioned adjacent the first plate in the axial fluid passageway. The second plate is moveable relative to the first plate between a first position to move the pressure-reducing device to a closed position to restrict or prevent fluid flow through the axial fluid passageway and a second position to move the pressure-reducing device to an open position to allow fluid flow through the axial fluid passageway.

A butterfly check valve is disclosed, which includes a housing defining an interior chamber having an inlet and an outlet; a control valve configured to control a flow between the inlet and the outlet, the control valve including a valve member movable to an open position in which a flow is permitted between the inlet and the outlet and a closed position in which the flow is blocked between the inlet and the outlet; and a check valve arranged downstream of the control valve, the check valve including a dome-shaped clapper configured to seal against an outer periphery of a clapper seat within the interior chamber of the housing in a reverse flow from the outlet to the inlet.

An outlet valve includes a valve body, a solenoid valve, and a manual operating member. The valve body includes a water inlet, a water outlet, a water storage cavity, a drain waterway, a first waterway, a second waterway, and a waterproof membrane. The first waterway is coupled to the drain waterway through a first drain opening. The second waterway is coupled to the drain waterway through a second drain opening. The waterproof membrane is configured to separate the water outlet cavity from the water storage cavity. The first waterway comprises a first plug coupled to an output end of the solenoid valve. The first plug is configured to control the opening and closing of the first drain opening. The second waterway comprises a second plug coupled to the manual operating member. The second plug is configured to control the opening and closing of the second drain opening.

Pressure-reduction devices for fluid systems are disclosed. An example device includes a housing defining an axial fluid passageway between an inlet and an outlet. A first plate is fixed to the housing and positioned in the axial fluid passageway. A second plate is positioned adjacent the first plate in the axial fluid passageway. The second plate is moveable relative to the first plate between a first position to move the pressure-reducing device to a closed position to restrict or prevent fluid flow through the axial fluid passageway and a second position to move the pressure-reducing device to an open position to allow fluid flow through the axial fluid passageway.

Embodiments of the disclosure relate to a system designed to compensate for flow disturbances when changing a flow rate in the system. The system includes a flow source device having an inlet and an outlet. The inlet is configured to receive fluid at a first pressure, and the outlet is configured to output the fluid at a second pressure that is higher than the first pressure. The system also includes a fluid control device having an inlet port and a drain port. The inlet port of the fluid control device is configured to receive flow from the outlet of the flow source device. Further, the system includes a constant flow regulator configured to provide a leakage flow to a drain output. The constant flow regulator is configured to decrease the leakage flow in response to the drain port of the fluid control device.

It is an object of the present invention to provide a constant-pressure valve having excellent flexibility of a diaphragm and capable or reducing generation of particles. A valve body-side abutment surface 21x which is vertical to moving directions of the valve body 21 and the shaft 31 is formed on the valve body 21, a shaft-side abutment surface 31x which is vertical to the moving directions of the valve body 21 and the shaft 31 is formed on the shaft 31, a valve seat-side abutment surface 41x which is vertical to the moving directions of the valve body 21 and the shaft 31 is formed on the flow rate control passage 13, a valve-closing abutment portion 41y which projects in a ring-shape is formed on the valve body-side abutment surface 21x or the valve seat-side abutment surface 41x, a valve body-pressing abutment portion 31y which projects in a ring-shape is formed on the valve body-side abutment surface 21x or the shaft-side abutment surface 31x, the shaft 31 and the shaft-side diaphragm 32 are formed of composite material which is made by bonding PTFE and cross-linked FIFE to each other, the shaft-side diaphragm 32 is formed of the PTFE, and the shaft-side abutment surface 31x is formed of the cross-linked PTFE.