Flow control valve for use on oil and gas wells or the like

Details Flow control valve for use on oil and gas wells or the like Flow control valve for use on oil and gas wells or the like

1983-09-26

1985-04-02

Novosad, Stephen J.

Wells

Valves, closures or changeable restrictors

Rotated operator

251160, 251283, 251315, E21B 3412

Patent

active

045081735

ABSTRACT:
The valve includes a tubular housing member that is connected in a string of a tubing that extends into an oil or gas well. The upper end of the tubular housing member is rotatable and is connected through actuators to a valve member that is pivotally supported in the tubular housing member. Rotation of the upper end of the tubular housing causes the actuators to move linearly and in opposite directions simultaneously pivot the valve member between open and closed positions. Pressure responsive means bias the seat toward the valve to maintain a fluid tight seal regardless of the direction of differential in pressure existing across the valve.

REFERENCES:
patent: 3007669 (1961-11-01), Fredd
patent: 3386701 (1968-06-01), Potts
patent: 3398928 (1911-03-01), Fredd
patent: 3414061 (1968-12-01), Nutter
patent: 3993136 (1976-11-01), Mott
patent: 4210207 (1980-06-01), McStravick et al.
patent: 4270606 (1981-06-01), McStravick et al.
patent: 4293038 (1981-10-01), Evans
patent: 4332267 (1982-06-01), Evans
patent: 4415038 (1983-11-01), Schmuck

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