API RP 11V7
Recommended Practice for Repair, Testing, and Setting Gas Lift Valves
|Publication Date:||1 June 1999|
Recommended Practice 11V7 applies to repair, testing, and setting gas lift valves and reverse flow (check) valves. This is a recommended practice to present guidelines related to the repair and reuse of valves; these practices are intended to serve both repair shops and operators. API RP 11V7 refers to test procedures used in API Specification 11V1 and Recommended Practice 11V2. Portions of these procedures are included in the appendices of this document.
The injection gas pressure operated (IPO) bellows valve is one example of a commonly repaired valve; the spring loaded production pressure operated (PPO) valve is also covered. Other valves, including bellows charged valves in production pressure operated service should be repaired according to the guidelines, however specialty valves are best repaired at the original manufacturer's shop.