Valves and valve actuation – With means to increase head and seat contact pressure – Fluid pressure
Patent
1979-07-20
1981-04-21
Schwadron, Martin P.
Valves and valve actuation
With means to increase head and seat contact pressure
Fluid pressure
251328, 251 62, F16K 2500
Patent
active
042628784
ABSTRACT:
A compact, hydraulically operated pressure valve for selective opening and closing of conduits or the like is provided which can withstand extremely high pressures in use, is easily repaired and/or replaced, and is low in cost. The valve includes a thin, circular metallic diaphragm which is mounted for bulging in response to pressure directed thereagainst, along with cavity structure adjacent to and in communication with one face of the diaphragm; in use when the diaphragm is located in closing relationship to a pressurized conduit, hydraulic fluid directed to the chamber establishes a desired pressure differential across the diaphragm such that the latter experiences only a desired pressure. The bulging of the diaphragm also causes the latter to sealingly engage a sharp marginal sealing edge associated with the valve, to further enhance the integrity of the closure effected thereby.
REFERENCES:
patent: 715745 (1902-12-01), Bickford
patent: 1873138 (1932-08-01), Mitchell
patent: 2582877 (1952-01-01), Mekler
patent: 3022977 (1962-02-01), Jones
patent: 3145969 (1964-08-01), VonZweck
patent: 3207469 (1965-09-01), Frame
patent: 3576198 (1971-04-01), Bessot
patent: 3905389 (1975-09-01), Snape
patent: 4131131 (1978-12-01), Frisch
Schwadron Martin P.
Shale Oil Science & Systems, Inc.
Walton G. L.
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