Manufacturers Standardization Society (MSS)


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The Manufacturers Standardization Society (MSS) of the Valve and Fittings Industry is a non-profit technical association organized for development and improvement of industry, national and international codes and standards for Valves, Valve Actuators, Pipe Fittings, Valve Modification, Flanges, Pipe Hangers, and Associated Supports. MSS valve and fitting standards are in use around the world in a wide variety of facilities, including Nuclear Power Plants, and in virtually every industry, from Waste Water to Oil Refining.