Patent ID: 8016035

Claim:
A safety valve having a safety valve housing comprising: a hydraulic fluid pressure operated piston at the safety valve housing; a flow tube in operable communication with the piston; and a chemical injection configuration disposed within the safety valve housing configured to apply a chemical to an outside surface of the flow tube and the chemical injection configuration includes a fluid conduit and a pressure test assembly for the fluid conduit, the pressure test assembly includes: a pressure housing having at least one opening for fluid flow and fluidly connected to the fluid conduit; at least one check valve in fluid communication with the pressure housing; and a cartridge receivable and movably positionable within the pressure housing and located between the fluid conduit and the at least one check valve and having at least one opening for fluid flow, the cartridge being positioned to inhibit fluid communication between the fluid conduit and the at least one check valve until a pressure in the fluid conduit reaches a threshold pressure independent of a cracking pressure of the at least one check valve.