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MSS SP-99-1994 (R 2005)

Instrument Valves

This Standard Practice applies to small valves and manifolds developed for and predominantly used in instrument, control and sampling piping systems. It covers steel and alloys valves of 1" nominal pipe size and smaller, and pressure ratings of 10,000 psi and lower at 100 degrees F.


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Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. [mss]


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