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SP-108-2002Resilient-Seated Cast-Iron Eccentric Plug ValvesThis Standard Practice covers 1/4 turn eccentric cast iron plug valves having flanged, threaded, mechanical joint, or grooved end connection. This standard 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.
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