Valve operable under oppositely directed pressure differentials

Details Valve operable under oppositely directed pressure differentials Valve operable under oppositely directed pressure differentials

1981-05-21

1983-12-20

Novosad, Stephen J.

Wells

Valves, closures or changeable restrictors

Rotated operator

166330, 251 58, E21B 3412

Patent

active

044211716

ABSTRACT:
A valve is provided for use in a subterranean well. Rotary manipulation of a fluid transmission conduit results in rotation of a ball valve to selectively open and close the fluid conduit. Rotary manipulation of the fluid conduit is imparted to the ball valve by means of a lever assembly which transfers sufficient force for activation of the valve permitting the valve to be used in the presence of significant pressure differentials. Seals are provided on opposite sides of the ball valve to prevent communication of either fluid or pressure from either above or below the ball valve.

REFERENCES:
patent: 3233677 (1966-02-01), Myers
patent: 3509913 (1970-05-01), Lewis
patent: 3821962 (1974-07-01), Mott
patent: 4022427 (1977-05-01), Read
patent: 4130166 (1978-12-01), Akkermann et al.
patent: 4210207 (1980-07-01), McStravick et al.
patent: 4319634 (1982-03-01), McMahan et al.

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