Valve for high pressure fluid systems

Details Valve for high pressure fluid systems Valve for high pressure fluid systems

1992-10-23

1995-03-07

Michalsky, Gerald A.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

251 44, 251 634, F16K 31124

Patent

active

053950909

ABSTRACT:
A valve for use in high pressure fluid systems includes means for moving a valve assembly between a position opening fluid flow through the valve and a position closing fluid flow through the valve. The valve is opened by the use of system pressure but when the valve is moved to a closed position the effect of the system pressure on the valve is neutralized and closing is accomplished by spring force only, thereby minimizing the effect of closing on the seals to increase seal life.

REFERENCES:
patent: 3490701 (1970-01-01), Malec
patent: 4153074 (1979-05-01), Risk
patent: 4307654 (1981-12-01), De Almeida
patent: 4909279 (1990-03-01), Nakamura et al.
patent: 4919166 (1990-04-01), Sims
patent: 5092362 (1992-03-01), Yie
patent: 5174544 (1992-12-01), Emanie
patent: 5186393 (1993-02-01), Yie
patent: 5241986 (1993-07-01), Yie

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