api5000Surface, Underwater Safety, and Boarding Shutdown Valves Background Products covered by API 6A include surface safety valves (SSV), underwater safety valvesclass API 5000 API 10000 API 15000 AA, BB, CC PSL 1 PSL 2 PSL 2 DD, EE, FF PSL 1 PSL 2 PSL 3 HH PSL 3 PSL 3 PSL 3 Our extensive experience in manufac-turing valves for wellhead