Balanced retention valve

Details Balanced retention valve Balanced retention valve

1992-05-28

1993-03-23

Rivell, John

Valves and valve actuation

Balanced valves

Reciprocating

251324, 251900, F16K 144

Patent

active

051957230

ABSTRACT:
A retention balanced valve, particularly for great depth oil prospection, has a plunger and a plunger guide displaceable inside a cylindrical valve body which is closed in one extremity. The plunger provides the sealing of lateral openings of the valve body and covers seal rings. When the plunger is displaced by an external actuation force against the force of a spring, it deobstructs the openings and allows the displacement of the plunger guide until a protection nut associated to the plunger guide covers the sealing rings.

REFERENCES:
patent: 2469921 (1949-05-01), Hoge
patent: 4172470 (1979-10-01), Walker
patent: 4374583 (1983-02-01), Barrington
patent: 4832081 (1989-05-01), Amrhein et al.

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