Watts Dual Check Valves in the 7 Series (such as the 0072205 1" Dual Check Valve) are threaded units with female threads on both sides. To connect to copper pipe to the unit, simply use an adapter with NPT male threads and screw the check valve in place.
Watts Valves, Backflow Preventers and other Plumbing Valves can be found at www.supplyhouse.com
Watts Valves, Backflow Preventers and other Plumbing Valves can be found at www.supplyhouse.com
