... -PA 2. Reference standards API RP 14A, API RP 14B, API RP 14C , NACEMR-01-75. 1. Control objectsThe single well control panel is ... of the control of the wellhead safety valves of the single independent oil and gas well and controls the SCSSV, master ... , wing valve and choke valve.2. Reference standards API RP 14A , API RP 14B , API RP 14C , NACEMR-01-75. 3. Basic parameters ...