A labor-saving push-button water valve includes a button, a valve core, a valve core spring, and a valve seat. The middle portion of the valve seat is formed with a core chamber. An outer periphery of a front end of the valve core is formed with an annular groove. When the button drives the valve core to move to the position where a water inlet hole is not communicated with a water outlet hole, an annular hydraulic chamber is formed between the valve core and the peripheral wall of the core chamber. The water valve is able to switch the opening and closing of the waterway smoothly by reducing the water pressure applied to the valve core, and reduces the wear of the valve core, and improves the service life and the airtightness of the water saving structure.

A hydraulic valve is disclosed comprising a venting passage for allowing fluidic communication between an interior and an exterior of the hydraulic valve, the venting passage having a first portion following a first path extending in a first plane, and a second portion following a second path extending in a second plane, wherein the first plane is at an angle to the second plane, and wherein the first and/or second path is a labyrinth path in its respective plane.

A hydraulic valve is disclosed comprising a venting passage for allowing fluidic communication between an interior and an exterior of the hydraulic valve, the venting passage having a first portion following a first path extending in a first plane, and a second portion following a second path extending in a second plane, wherein the first plane is at an angle to the second plane, and wherein the first and/or second path is a labyrinth path in its respective plane.

An air distribution apparatus including a manifold body and a plurality of ports defined through a wall of the manifold body. The apparatus also includes a delivery conduit connected to each one of the plurality of ports. On at least one of the plurality of ports, a port valve configured to communicate an interior of the manifold body with the delivery conduit associated with the at least one of the plurality of ports. The apparatus also includes a supply conduit connected at an output end thereof to the interior of the manifold body and connected at an input end thereof to receive a product air stream with agricultural products entrained therein. The apparatus also includes an exhaust orifice defined in the supply conduit and an exhaust valve configured to control a flow of pressurized air from an interior of the supply conduit through the exhaust orifice. The port valve and exhaust valve are controlled to operate oppositely to each other between open and closed positions of each valve such that when the port valve is in the closed position. The exhaust valve is in the open position with the delivery conduit being disconnected from the interior of the manifold body and, when the exhaust valve is in the closed position, the port valve is in the open position and pressurized air from the interior of the supply conduit is prevented from flowing through the exhaust orifice. The port valve and the exhaust valve are adjustable to intermediate positions between the open and closed positions.

An exhaust valve assembly comprises a housing having a central axis. A ram assembly moves along a shaft fixed inside a hollow interior of the housing. Downstream movement of the ram assembly increases the size of the valve opening, allowing additional exhaust gases to pass through the interior of the housing. Springs maintain the ram assembly in a position in which exhaust gases may pass around the ram assembly. Sufficient force on the ram assembly from exhaust gases compresses at least one spring allowing the ram assembly to move downstream, thereby allowing additional exhaust gases to pass through the interior of the housing.

An exhaust valve assembly comprises a housing having a central axis. A ram assembly moves along a shaft fixed inside a hollow interior of the housing. Downstream movement of the ram assembly increases the size of the valve opening, allowing additional exhaust gases to pass through the interior of the housing. Springs maintain the ram assembly in a position in which exhaust gases may pass around the ram assembly. Sufficient force on the ram assembly from exhaust gases compresses at least one spring allowing the ram assembly to move downstream, thereby allowing additional exhaust gases to pass through the interior of the housing.

A flow control valve providing a constant outflow in a variable inflow fluid pressure environment from as low as 0 bar and at least up to 6 bar. The flow valve comprises a flow control surface that features at least one flow control opening for controlling the outflow through the valve. The flow control opening configured to have a triangular-like polygonal configuration.

A flow control valve providing a constant outflow in a variable inflow fluid pressure environment from as low as 0 bar and at least up to 6 bar. The flow valve comprises a flow control surface that features at least one flow control opening for controlling the outflow through the valve. The flow control opening configured to have a triangular-like polygonal configuration.

A fluid flow throttle valve that keeps the pressure of a fluid flow pumped into a system by a high-pressure pump constant and that is particularly suitable as a reject valve for maintaining the system pressure of a reverse osmosis device at a pressure level of <20 bar. The flow pressure is regulated by a spring-actuated cone that is partially within the outflow channel of the throttle valve at any given time. A motion restrictor is supported to the wider end of the cone such that in its lowest position, the cone permits a bypass flow of a predetermined volume up to the target pressure of the system. As the flow volume increases further and the cone rises as a result, the force exerted on the restrictor member by the flow pressure contributes to preventing the valve from closing.

A fluid flow throttle valve that keeps the pressure of a fluid flow pumped into a system by a high-pressure pump constant and that is particularly suitable as a reject valve for maintaining the system pressure of a reverse osmosis device at a pressure level of <20 bar. The flow pressure is regulated by a spring-actuated cone that is partially within the outflow channel of the throttle valve at any given time. A motion restrictor is supported to the wider end of the cone such that in its lowest position, the cone permits a bypass flow of a predetermined volume up to the target pressure of the system. As the flow volume increases further and the cone rises as a result, the force exerted on the restrictor member by the flow pressure contributes to preventing the valve from closing.