This Standard covers cast copper alloy: threaded pipe flanges and blind flanges having rating class designations 150, 300, 600, 900, 1500, and 2500, flanged fittings having rating class designation 150 and 300, and threaded and flanged valves having rating class designations 150, 300, 600, 900, 1500, and 2500.



It also establishes requirements for: pressure-temperature ratings, size and method of designating openings for reduced fittings, markings, materials, dimensions, bolting and gaskets, tolerances, nondestructive examination for valves, and tests.



This standard also provides dimensional requirements for flanged ends of valves conforming to MSS SP-80.