Valve

Details Valve Valve

E - Fixed Constructions

21

B

166/41

E21B 34/12 (2006.01) E21B 34/02 (2006.01) E21B 34/10 (2006.01) E21B 34/00 (2006.01)

Patent

CA 1223523

Abstract of the Disclosure A ball type valve in which the ball is rotated by the cooperation of multiple tracks and multiple track followers. Also, a pressure operated permanent lock-out is dis- closed. Pressure applied to a piston withdraws an expander from under a lock ring to release a lock-out sleeve. Con- tinued application of pressure drives the sleeve to valve lock-open position where the sleeve is permanently locked to the housing.

465507

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