Watts LF7R 3 U2 3 4 X 3 4 Part of the LF7R Series silt fence selector Z551 2NH G Z551 2NH G ZN1901 2NH Specifications Backflow Preventer Type Dual Check Body Finish Cast Copper Silicon Alloy Body Material Lead Free Brass Body Pattern Straight Brand Watts Bypass No Cap And Tether No Disc Material Santoprene EAN 098268824940 Elbow Fitting No Hazard Protection Level Non Health Hazard Hot And Harsh Water No Hydrant Connection No Inlet Connection Size 3 4 IN Inlet Connection Size Metric 19 MM Inlet Connection Type Male Threaded Inlet Shutoff Valve Type No Shutoff Valve Inlet Thread Type NPT Lead Free YES Maximum Temperature Fahrenheit 180 Maximum Working Pressure BAR 12 It is designed for non health hazard residential water system containment