Watts LFF116 150 B 20 200 LS 2 1 2 Part of the LFF116 Series Pipe Connection Fitting 50 Minimum Temperature Fahrenheit 33 Outlet 50 Minimum Temperature Fahrenheit 33 Outlet Connection Size 1 1 4 IN Outlet Connection Type Female Threaded Outlet Shutoff Valve Type Quarter Turn Ball Valve Outlet Thread Type NPT Part Number 88004039 Polymer Coating No Pressure Operation Continuous Protection Type Backpressure and Backsiphonage Seat Material Engineered Plastic Series 009 Strainer Yes Technologies Flood Detection Tradename None Field Guide Backflow Preventer Repair Parts 007 and 009 Specifications Backflow Preventer Type Dual Check with Atmospheric Vent Body Finish Stainless Steel Body Material Stainless Steel Body Pattern Does Not Apply To Product Brand Watts Buy American Act Compliant NO Bypass No Cap And Tether No Disc Material Rubber EAN 098268004496 Elbow Fitting No Hazard Protection Level Non Health Hazard Hot And Harsh Water No Hydrant Connection No Inlet Connection Size 1 4 IN Inlet Connection Size Metric 8 MM Inlet Connection Type Male Threaded Inlet Shutoff Valve Type No Shutoff Valve Inlet Thread Type NPT Lead Free YES Maximum Temperature Fahrenheit 140 Maximum Working Pressure BAR 10 the valve acts as a pressure sustaining control valve It is normally closed and quickly opens when upstream pressure exceeds the pilot setting