Watts 957ZRPDA BFG CFM FS 4 Part of the 957RPDA Series Egress System Specifications Body Material Epoxy Coated Specifications Body Material Epoxy Coated Cast Iron Brand Watts Buy American Act Compliant NO FreeArea 304 SQ IN Lead Free Not In Scope Outlet Connection Size 8 IN Outlet Connection Type No Hub OverflowDome No OverflowDrain Internal Standpipe Specification Sheet RD 800 Specifications ArmorTek Technology No Backflow Preventer Type Reduced Pressure Zone Assembly Body Finish Bronze Body Material Bronze Body Pattern Inline Brand Watts Bypass No Bypass Size Does Not Apply To Product Cap And Tether No Disc Material Silicone EAN 098268350104 Elbow Fitting No GDS Status Registered Hazard Protection Level Health Hazard Hot And Harsh Water No Hydrant Connection No Inlet Connection Size 1 IN Inlet Connection Size Metric 25 MM Inlet Connection Type Female Threaded Inlet Shutoff Valve Type Quarter Turn Ball Valve Inlet Thread Type NPT Lead Free NO Maximum Temperature Fahrenheit 180 Maximum Working Pressure BAR 12 Compact design allows small enclosures to be used This 4 inch reduced pressure detector backflow preventer assembly help stop the reverse flow of liquids due to backpressure or backsiphonage