Valve Series 30/31
General purpose valve. This valve has a high strength through-stem design. Its precision double “D” disc to stem connection drives the disc without the need of screws or pins. This design allows for higher Cv, easy disassembly and reduced disc to stem failure. The stem is retained in the body by means of a S.S. retaining ring. The Series 30, a wafer version, and the Series 31 the companion lug, are both rated 175 psi (12 bar) for 2″-12″ bodies and 150 psi (10 bar) for 14″-20″ bodies. Dead end service ratings are 75 psi (5 bar) for 2″-12″ bodies, and 50 psi (3.5 bar) for 14″-20″ bodies.
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