Patent ID: 8616289

Claim:
A system, comprising: a back pressure valve configured to mount in a mineral extraction system, wherein the back pressure valve comprises: a cylindrical body comprising a venting port coaxial with a longitudinal axis of the cylindrical body; a plunger disposed in the venting port, wherein the plunger comprises a stem that extends from the venting port into an adjacent cavity of the cylindrical body; a hold down sleeve and one or more locking segments disposed in the cavity, wherein the hold down sleeve and the one or more locking segments comprise an angled interface, such that an axial load applied to the hold down sleeve in a first direction via a running tool generates a radial load that urges the one or more locking segments into a locked position that seats, locks and seals the back pressure valve in a bore of the mineral extraction system; and a shear pin mounted to the cylindrical body, wherein the shear pin is configured to couple the back pressure valve to the running tool, wherein an application of the axial load in the first direction is configured to shear the shear pin to uncouple the back pressure valve from the running tool.