Designed for use on aboveground storage tank piping systems. Allows excess pressure caused by thermal expansion of the liquid to return to the tank. Details For use with most leak detection systems One way flow Precise settings of 25 or 50 psi Body: Ductile iron Cap: Stainless steel Relief fitting: Stainless steel with Viton Specifications Series: 078DI Material: Ductile iron Size: 1/2 in. Pressure: 50 PSI Downloads Morrison Bros. 078DI Datasheet (PDF Download)
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