Patent ID: 8636058

Claim:
A system, comprising: a back pressure valve, comprising: a body; a plunger disposed internal to the body; a friction member disposed about the exterior of the body, wherein the friction member is configured to move in response to a hydraulic pressure in a hydraulic cavity, the friction member is configured to expand radially from a radially contracted position to a radially expanded position to contact an internal surface of a straight bore to secure the back pressure valve in the straight bore, and the friction member is configured to contract radially from the radially expanded position to the radially contracted position to disengage the internal surface of the straight bore to release the back pressure valve from the straight bore; and a lock member configured to lock the friction member in the radially expanded position, wherein the back pressure valve is configured to be retrieved from the straight bore after releasing the lock member and contracting the friction member from the radially expanded position to the radially contracted position.