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MSS SP-139-2014
Copper Alloy Gate, Globe, Angle, and Check Valves for Low Pressure/Low Temperature Plumbing Applications
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.
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Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. [mss]