Abstract: The present invention provides a valve including: an inlet unit IL; an outlet unit OL perpendicular to the inlet unit; and an opening/closing unit. The opening/closing unit includes: a rod to open or close the discharge port while extending or retracting in the discharge port in a flow direction of the fluid, having a poppet to open or close the discharge port, and having a piston to be pressed by a pilot gas; a body having a guide to accommodate the rod and guide the extension and retraction of the rod, and pressing spaces into which the pilot gas is introduced; and a solenoid valve to supply the pilot gas into the pressing spaces, in which the opening/closing unit has no spring, and in which a diameter of a seat, which comes into contact with the poppet in the outlet unit, is greater than a diameter of the guide.

Abstract: A female screw hole (31) is opened in an outer surface of a housing (3) of a hydraulic clamp (1), and a leg portion (40a) of a tubular casing (40) is threaded into the female screw hole (31). An annular gasket (41) is fitted to an annular groove (42) formed in a head portion (40b) of the casing (40). On an inner peripheral surface (41a) of the gasket (41), a first annular sealing portion (71) which seals an inner peripheral surface (42a) of the annular groove (42) is provided. On an annular outer end surface (41d) of the gasket (41), a second annular sealing portion (72) which seals a peripheral wall (68) of the female screw hole (31) at the opening part of the housing (3) is provided. A diameter (D1) of the first annular sealing portion (71) is set to a value smaller than a diameter (D2) of the second annular sealing portion (72).

Abstract: A fail-safe proportional mixing valve is provided that tempers a hot fluid supply by proportional flow from a hot fluid inlet and a cold fluid inlet. The valve includes a fail-safe mechanism disposed within the body of the valve to isolate flow from the hot fluid inlet in the event the temperature of the mixed fluid exceeds a predetermined set point. The valve also includes a check valve in the fluid inlets to prevent backflow in case of failure of a fluid supply. In a further aspect, the cold fluid inlet includes an adjustment set screw to adjust the cold fluid flow into the mixing valve, thereby adjusting the maximum mixed fluid temperature that can be discharged from the valve assembly.

Abstract: A device for bleeding or draining a duct comprises a member for closing a passage that opens out into the duct, the member having a helical groove formed in its peripheral surface enabling it to be moved in the passage by screwing and unscrewing on a helical rib of a collar embedded in the material defining the passage.

Abstract: A diaphragm controlled irrigation valve (20) is disclosed which includes a captivated relief member (60). The captivation is achieved by a stop (100) which radially extends from the member to abut the valve housing (23).

Abstract: A drain plug for threaded engagement within a threaded drain opening of a pressurized system to prevent complete removal of the plug before release of any residual pressure within the system. An axially extending groove is formed in the threaded portion of an elongated shank of the plug and terminates in an unthreaded area of the shank adjacent to an enlarged head of the plug. An O-ring is compressed against the pressurized vessel or container when the plug is fully sealed in the threaded opening. The end of the groove adjacent the plug head beings to vent any residual pressure trapped within the pressurized system upon partial unloosening of the plug to relieve pressure while a sufficient number of threads on the inner end of the shank remain engaged within the threaded opening to prevent the plug from being blown out of the hole by any residual pressure. In an alternate embodiment, an axial hole is formed through the center of the shank and communicates with a cross hole to provide the venting for the plug.

Abstract: A valve construction and method of making the same are provided, the valve construction comprising a housing having an inlet and an outlet and a valve seat adapted to be interconnected to the inlet and the outlet, a movable valve member carried by the housing and being operatively associated with the valve seat to control fluid flow therethrough from the inlet to the outlet, and a stepper motor carried by the housing and being operatively interconnected to the movable valve member to move the movable valve member relative to the valve seat to control the fluid flow through the valve seat, the movable valve member comprising a flexible part for sealing closed the valve seat when the stepper motor moves the flexible part against the valve seat and a throttlling part extending beyond the flexible part and into the valve seat to throttle the fluid flow therebetween when the stepper motor has moved the flexible part away from the valve seat and the throttling part has a portion thereof disposed in the valve seat.

Abstract: A manifold and valve system is disclosed for purging air from a closed brine filled loop piping used in conjunction with a water source heat pump. The valves are T-shaped with a closure member or valving member in the top portion which connects with the purge flow conduit.

Abstract: Purge branch coupling for a main flexible hose, reinforced or not, sheathed or unsheathed, of the type having the shape of a tubular insert which is intended to co-operate with a closure piece of its proximal extremity and which is integral with the main hose by moulding coating of a splicing material, particularly comprised of plastic or elastomer material. According to this invention, the tubular insert forming the purge branch coupling comprises a plurality of openings provided in its tubular wall so that the coating of said junction material, which penetrates into said openings during moulding establishes linking bridges between the portions of said coating which envelope the insert, thus providing for the holding in position of said insert. Application for couplings in lines of water, air and fuel circuits in motor vehicles.

Abstract: A method and device for valving liquid flow through a conduit which avoids high pressure flow characteristics such as valve chatter due to turbulence and turbulence-enduced corrosion by spoiling the flow of liquid so as to break up the liquid front into diverse streams and thereafter closely regulating flow through the incipient stage to full flow stage.

Abstract: A bleeder arrangement for a hydraulic system of the type used in vehicle brakes. It includes a bleeder screw and bleeder passage construction which completely protects the bleeder screw threads from any exterior corrosive agents. The screw body is arranged to radially clear the housing in which it is installed so that corrosive action will not tend to seize the screw body to the housing. A seal arrangement also protects the valve portion of the bleeder screw from corrosive action as well as preventing fluid spillage during the bleeding operation.

Abstract: A valve assembly suitable for use as a draincock in an automobile radiator. The valve elements can be preassembled and installed in a stamped opening in a radiator tank by simple snap-in action. The assembly includes three elements: (1) an insert, (2) a threaded plug, and (3) a gasket that forms a seal between the plug and wall of the radiator tank.