CPC E21B 34/10 (2013.01) [E21B 17/1014 (2013.01)] | 20 Claims |
1. A valve apparatus comprising:
a valve body comprising a first valve end configured for coupling, a second valve end also configured for coupling, and a flow passage;
a main piston movably disposed within the flow passage, the main piston configured to move to and from a first piston position to a second piston position, and the main piston having a main piston body, an extended piston end, and an inner piston passageway;
a chamber formed in the valve body, and comprising an at least one actuatable device;
a movable member movably disposed within the valve body, and between the first valve end and the second valve end, the movable member comprising: a no-go position for stopping movement of the main piston, and a go position to facilitate movement of the extended piston end;
wherein rotation of the valve apparatus results in rotation of the movable member in a sufficient manner to allow the main piston to move from the first position to the second position,
wherein an energizer is disposed around the main piston body, and
wherein the second position corresponds with fluid pressure entering the chamber to the actuatable device.
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