MSS - Manufacturers Standardization Society of the Valve and Fittings Industry.
Scope
This MSS Standard Practice establishes requirements for copper alloy gate@ globe@ angle@ and check valves used in applications with connections and connected to materials which will not support the pressures and temperatures of applicable ANSI-approved Class standards and the requirements of MSS SP-80. This Standard Practice establishes requirements for copper alloy gate@ globe@ angle and check valves for plumbing and other purposes where a non-Class@ CWP pressure and temperature rating is sufficient. This Standard Practice provides requirements for the following: a) Pressure-Temperature Ratings b) Materials c) End Connections d) Dimensions e) Markings f) Testing and Inspection