Watts 9BD Part of the 9BD Series nwgf Specifications Backflow Preventer Type Dual Specifications Backflow Preventer Type Dual Check 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 Santoprene EAN 098268848939 Elbow Fitting No GDS Status Registered Hazard Protection Level Non Health Hazard Hot And Harsh Water No Hydrant Connection No Inlet Connection Size 3 8 IN Inlet Connection Size Metric 10 MM Inlet Connection Type Flare Joint Inlet Shutoff Valve Type No Shutoff Valve Inlet Thread Type Does Not Apply To Product Lead Free YES Maximum Temperature Fahrenheit 110 Maximum Working Pressure BAR 13 This 1 4 IN dual check valve backflow preventer for carbonated beverage machines prevents the reverse flow of contaminated water It is designed for continuous pressure applications and complies with FDA food additive regulations ball check valve