High pressure fluid valve

Details High pressure fluid valve High pressure fluid valve

1988-07-22

1989-05-16

Walton, George L.

Valves and valve actuation

Fluid actuated or retarded

Piston type expansible chamber reciprocating valve actuator

137883, 137885, 251 635, 251122, F16K 31122, F16K 4704

Patent

active

048303313

ABSTRACT:
A high pressure fluid valve includes a tubular portion with a valve seat on its end and a closure element for engaging the valve seat. A piston carries either the tubular portion or the closure element as a movable valve member, with the other being fixed. A first fluid chamber is provided adjacent the valve seat and a second fluid chamber is spaced therefrom adjacent the other end of the movable valve member. When the movable valve member is actuated, one of the fluid chambers increases in volume by the same amount that the other decreases in volume, thereby maintaining the internal volume of the valve constant.

REFERENCES:
patent: 938601 (1909-11-01), Maas
patent: 3026896 (1962-03-01), Bosworth et al.
patent: 4391293 (1983-07-01), Keenan
patent: 4525183 (1985-06-01), Cordes et al.
patent: 4726933 (1988-02-01), Mayr et al.

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