Pressure insensitive valve

Details Pressure insensitive valve Pressure insensitive valve

1980-04-04

1982-01-19

Walton, George L.

Valves and valve actuation

Fluid actuated or retarded

Piston type expansible chamber reciprocating valve actuator

137236S, 166324, 166363, F16K 31126

Patent

active

043112978

ABSTRACT:
A pressure insensitive, fail-safe subsea valve is disclosed. The valve is manipulator operable for deep water application and does not require conventional diving techniques to install, maintain or remove. The valve is pressure balanced by employing a hollow valve stem which equalizes the pressure on both ends of the stem.

REFERENCES:
patent: Re30115 (1979-10-01), Herd et al.
patent: 3331583 (1967-07-01), Baker
patent: 4029294 (1977-06-01), McCaskill et al.
patent: 4230299 (1980-10-01), Pierce, Jr.
"Composite Catalog of Oil Field Equipment and Services", by World Oil, 1976-1977 Edition, pp. 4956 and 4957.
Herd et al., Offshore, Aug. 1979, Fail-safe Valves Take on New Demands, pp. 137-140.

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