API STD 598
Valve Inspection and Testing
standard by American Petroleum Institute, 10/01/1996
Full Description
Covers inspection, supplementary examination, and pressure test requirements for both resilient-seated and metal-to-metal seated gate, globe, plug, ball, check, and butterfly valves. Pertains to inspection by the purchaser and to any supplementary examinations the purchaser may require at the valve manufacturer's plant. Covers both required and optional pressure tests by the valve manufacturer at his plant.