Wireline safety valve with split ball

Details Wireline safety valve with split ball Wireline safety valve with split ball

F - Mech Eng,Light,Heat,Weapons

16

K

166/44

F16K 11/16 (2006.01)

Patent

CA 1043697

ABSTRACT OF THE DISCLOSURE The specification describes a sub-surface shutoff valve for wells adapted to be supported in a well fluid production pipe. The valve includes a body having a flow passage therethrough, shutoff valve means including a ball valve shiftable between a first position closing the passage and a second position at which the passage is open, actuator means for shifting the ball valve between the positions and including means defining a control fluid pressure chamber for moving the member to the second position, and means responsive to the pressure of well fluid in the production pipe for biasing the ball valve to the first position upon reduction in the pressure of control fluid in the chamber.

302504

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