3/4 In Bronze Dual Check Valve Backflow Preventer with Intermediate Atmospheric Vent, Union Solder End Connections_This 3/4 inch dual check valve backflow preventer with atmospheric vent helps prevent the reverse flow of hot or cold polluted water from entering into the potable water supply. This valve is designed for continuous pressure non-health hazard applications in smaller supply lines, such as laboratory equipment, processing tanks, sterilizers, dairy equipment, and specifically for boiler feed lines. It consists of a brass body with stainless steel internal parts, integral strainer, two durable tight seating rubber check valves, and soldered end connections._Compact design_Stainless steel internal parts_Forged brass body for durability_Horizontal or vertical installation_Specifications_Backflow Preventer Type Dual Check with Atmospheric Vent_Body Finish Brass_Body Material Brass_Body Pattern Inline_Brand Watts_Buy American Act Compliant YES_Bypass No_Cap And Tether No_Disc Material Rubber_EAN 098268195347_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 20 MM_Inlet Connection Type Union Solder_Inlet Shutoff Valve Type No Shutoff Valve_Inlet Thread Type Does Not Apply To Product_Lead Free NO_Maximum Temperature-Fahrenheit 250_Maximum Working Pressure-BAR 12.10_Maximum Working Pressure-PSI 175_Meter Type No Meter_Minimum Temperature - Celsius 0.50_Minimum Temperature-Fahrenheit 33_Outlet Connection Size 3/4 IN_Outlet Connection Type Socket_Outlet Shutoff Valve Type No Shutoff Valve_Outlet Thread Type Does Not Apply To Product_Part Number 0061926_Polymer Coating No_Pressure Operation Continuous_Protection Type Backpressure and Backsiphonage_Seat Material Rubber_Series 9D_Strainer Yes_Type Kit