Backflow Preventer, Dual Check Valve, .75-In. Category_Fasteners If the length is not

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Backflow Preventer, Dual Check Valve, .75-In. Category_Fasteners If the length is not3 4", back flo preventer, dual check valve, use at drinking water supply service entrance or individual outlets, for non health hazard residential water system containment & continuous pressure applications, install vertically or horizontally, temperature range 33 to 180 degrees Fahrenheit, minimum working pressure 10 psi to maximum working pressure 150 psi, buna n seals & stainless steel springs, meets asse 1023 & csa b64. 6, wetted surface of this