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Valve & Fitting Standards SP-108-2002, $122.00
This MSS Standard Practice covers 1/4 turn eccentric cast iron plug valves having flanged, threaded, mechanical joint or grooved end connection. It is intended for resilient seated valves with circular, rectangular, or other geometric seat configuration having no visible evidence of leakage. The size range covered is NPS 3 through 72. Typical applications are sewage, sludge, waste water, and water service. The manufacturer should be consulted for other applications. Conditions of water hammer, hydraulic pulsation and excessive
operating noise are results of the system design rather than valve design
and are beyond the scope of this standard, and require special design
and construction considerations. |