Watts 3/4" Back Flo Preventer, LF7R, Brass Brass, Check Valve, Backflow Preventer

3/4", Back Flo Preventer, Testable 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 Product Contacted By Consumable Water Contains Less Than 1/4 Of 1 Percent Of Lead By Weight, Meets AB1953 California & VT S152 Vermont Low Lead Restrictions.