Fig. 4131美标旋启式止回阀
Swing Check Valve, MS SP-71. Design: MSS SP-71 / AWWA C508 Class: 125Lbs, 200WOG Face to face: ASME B 16.10, JIS10K Flange: ASME B 16.1 Testing: MS SP-71 Size: 2"-24"
*with lever & counterweight available Fig. 4132
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