1/2" Combination water feeder & backflow preventer (Combination 1156F - 9D), ‎Bronze, Press

1/2 In Bronze Combination Fill Valve and Backflow Preventer, Threaded Union End Connections, Viega Propress Adaptors, Teflon Tape_This 1/2 inch bronze combination fill valve and backflow preventer is for use in commercial and residential hydronic heating systems to provide make-up water to the boiler, and prevent backflow when supply pressure falls below system pressure. It consists of a bronze backflow preventer, model 9D and a bronze feed water pressure regulator, model 1156F, in one pre-assembled unit. The high capacity fill valve provides quick system filling and purging. It is designed for use in the boiler feed lines of hydronic heating systems and has 1/2 inch union NPT inlet x NPT threaded outlet connections with Viega ProPress (R) connection adapters. The maximum pressure is 100 psi (6.9 bar)._Strainer screen_Viega ProPress (R) connection adapters_Bronze body for durability_Horizontal or vertical installation_Specifications_Backflow Preventer Type Dual Check with Atmospheric Vent_Body Finish Bronze_Body Material Brass_Body Pattern Inline_Brand Watts_Buy American Act Compliant YES_Bypass No_Bypass Size Does Not Apply To Product_Cap And Tether No_Disc Material Rubber_EAN 098268119435_Elbow Fitting No_Hazard Protection Level Non Health Hazard_Hot And Harsh Water No_Hydrant Connection No_Inlet Connection Size 1/2 IN_Inlet Connection Size-Metric 13 MM_Inlet Connection Type Press_Inlet Shutoff Valve Type No Shutoff Valve_Inlet Thread Type Does Not Apply To Product_Lead Free NO_Maximum Temperature-Fahrenheit 212_Maximum Working Pressure-BAR 6.90_Maximum Working Pressure-PSI 100_Meter Type No Meter_Outlet Connection Size 1/2 IN_Outlet Connection Type Press_Outlet Shutoff Valve Type No Shutoff Valve_Outlet Thread Type Does Not Apply To Product_Part Number 0386473_Polymer Coating No_Pressure Operation Continuous_Protection Type Backpressure and Backsiphonage_Seat Material Plastic_Series B911_Strainer No