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Valve & Fitting Standards SP-99-1994 (R2005), $103.00 This MSS Standard Practice applies to small valves and manifolds developed for and predominantly used in instrument, control and sampling piping systems. It covers steel and alloy valves of 1" nominal pipe size and smaller, and pressure ratings of 10,000 psi and lower at 100º F. This standard applies to instrument valve designs including but not limited
to needle valves, packless valves, ball valves, plug valves, check valves
and manifold valves. Instrument valves are generally of proprietary design.
This standard is not intended to define or limit designs, construction,
performance, envelope dimensions, or valve types. |