Valve

Details Valve Valve

1982-10-27

1985-06-11

Scott, Samuel

Valves and valve actuation

Fluid actuated or retarded

Piston type expansible chamber reciprocating valve actuator

251 94, 166323, 166324, F16K 31143

Patent

active

045223700

ABSTRACT:
A subsurface valve which functions as a lubricator valve and a retainer valve in response to changes in control pressure which may be pumped through to kill a well and which is provided with a lock means for locking the valve in closed position.

REFERENCES:
patent: 1679370 (1928-08-01), Nordstrom
patent: 3568715 (1971-03-01), Taylor
patent: 3821962 (1974-07-01), Mott
patent: 3830297 (1974-08-01), Cockrell
patent: 3842913 (1974-10-01), Mott
patent: 3941141 (1976-03-01), Robert
patent: 4149698 (1979-04-01), Deaton
patent: 4368871 (1983-01-01), Young

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