LF7-U2-2 1/2X1/2

This 1/2 by 1/2 inch dual check valve prevents the reverse flow of polluted water from entering into the drinking water supply at the service entrance or at individual outlets. It is designed for non-health hazard residential water system containment and continuous pressure applications. It is installed immediately downstream of the residential water meter in a vertical or horizontal position. It consists of lead free cast copper silicon alloy body, union NPT thread female inlet by NPT thread female outlet, two plastic replaceable check valves, and stainless steel springs.