7-3-U2 3/4X3/4

This 3/4 IN male NPT x 3/4 IN union female, series 7, dual check valve backflow preventer prevents the reverse flow of polluted water from entering into the drinking water supply at the service entrance or at individual outlets. It consists of a bronze body construction, with two plastic replaceable check valves, and stainless steel springs. The valve is designed for non-health hazard residential water system containment, continuous pressure applications. It is installed immediately downstream of the residential water meter, in a vertical or horizontal position. Check with local inspection authorities for installation requirements. Minimum working pressure is 10 psi (69 kPa). Maximum working pressure is 150 psi (10 bar).