Watts LF909 OSY S FDA FS 3 Part of the LF909 Large Series ZC100F 3NH a pressure differential relief valve a pressure differential relief valve This 1 by 1 inch lead free dual check valve backflow preventer prevents the reverse flow of polluted water from entering into the drinking water supply at the service entrance or at individual outlets Specifications ArmorTek Technology Yes Backflow Preventer Type Reduced Pressure Zone Assembly Body Finish Epoxy Coated Using ArmorTek Technology Body Material Cast Iron Body Pattern Inline Brand Watts Buy American Act Compliant NO Bypass No Bypass Size Does Not Apply To Product Cap And Tether No Disc Material Does Not Apply To Product EAN 098268292220 Elbow Fitting No Hazard Protection Level Health Hazard Hot And Harsh Water No Hydrant Connection No Inlet Connection Size 3 IN Inlet Connection Size Metric 76 This assembly consists of an epoxy coated cast iron body