Abstract: A leveling valve for the automatic stabilization of the chassis height of a vehicle, especially of a motor vehicle with pneumatic shock absorption, having a valve housing (1) with a spring-loaded double valve body (11), an inlet seat (16) for the double valve body (11), and a hollow valve plunger (25) carrying an outlet seat (26) for the double valve body (1), being movable in the axial direction, and being assigned to a gasket (22) disposed in a groove (21), which may be axially readjusted for the purpose of adjusting the locking position in relation to a supporting element (30) resting on a cam (43) of a shaft (48) that runs transversally to the central axis (2) of the valve plunger (25) and is torsion-proof. The position of the supporting element (30) in relation to the housing (1) may be changed by means of an actuating lever (45) disposed outside of the housing, swiveling and acting on the shaft (38).

Abstract: A shut-off valve to fit the outlet end of a double faucet single spout tap in lieu of the conventional aerator screen. The valve comprises a valve body having an upstream valve seat on which is adapted to rest a disc-shape valve plug. An operant shaft extends transversely through the valve body and is provided with a handle at one end to rotate the shaft. The shaft has a central cam lapping a downstream edge portion of the valve plug. In one rotated position of the shaft, the valve plug closes the valve under the action of the upstream fluid pressure. Rotation of the shaft causes tipping of the valve plug to a fully-open position.

Abstract: A control system for a fluid actuated control member is disclosed which uizes a pair of electrically controlled servo valves to control the supply of servo pressure fluid to a control valve piston. The pair of servo valves are electrically controlled such that, under normal conditions, one of the servo valves is operative to supply the servo pressure signal, while the other servo valve remains in an inert, open position. Upon the detection of a malfunction in the operative servo valve, electrical switches render the malfunctioning valve inert and transfer the operative capabilities to the second servo valve. The hydraulic control system does retain 100% of its performance capabilities following a malfunction of the initial servo valve.

Abstract: A safety valve intended to limit the pressure of a fluid contained in a vessel to which the valve is connected by a nozzle closed off by a flap-valve pressed against its seat by a spring acting on a first side of the flap-valve. The valve has two operating states; either the flap-valve is closed when the fluid pressure in the vessel acting through the nozzle on the opposite or second side of the flap-valve is below a pre-determined value or the flap-valve is open allowing fluid from the vessel to escape via an escape chamber in the valve when the pressure in the vessel is above the pre-determined value. A casing surrounding the spring is connected with the escape chamber by calibrated holes whereby the pressures in the casing and chamber are equalized. In addition to the spring, fluid pressure in the chamber acts on the first face of the flap-valve. When the flap-valve is closed, the fluid pressure in the escape chamber and casing is low.

Abstract: A separator for immiscible, emotionless-forming liquids having different specific gravities which comprises a container and a valve arrangement provided in the lower end of the vessel for movement between open and closed conditions whereby through disposition in the container, the heavier liquid may be discharged from the separator, the lighter liquid being retained therein. The valve configuration is such as to greatly facilitate its disassembly in cleaning as well as economic manufacture.

Abstract: A valve construction in the form of a "flex-finger" or flexible stem valve is provided for handling substances which are highly corrosive or very active chemically. The valve body, valve seats, a valve ball and flexible finger or flexible valve stem are all composed of chemically resistant material. The flexible stem has an outer end secured in the valve body against rotation with a fluid tight joint and an inner end for actuating the "ball". The flexible stem is composed of material which is sufficiently resilient so that it may be caused to travel in a circular or orbital path carrying or actuating a "ball" or other attachment into and out of engagement with the valve seat or seats.

Abstract: This invention relates to a valve having a valve member in the form of a roller supported by a roller support such that the roller when moved to closed position is forced against a valve seat and such that inlet pressure in said valve aids in maintaining said roller in a tight closed position, said valve preferably comprising a tubular valve housing having an axial inlet and a peripheral outlet.