3/4 In Lead Free Forged Brass Dual Check Valve Backflow Preventer with Intermediate Atmospheric Vent, Female Union Inlet and Outlet Connections_This 3/4 inch lead free dual check valve backflow preventer with atmospheric vent prevents 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 lead free forged brass body with stainless steel internal parts, integral strainer, two durable tight seating rubber check valve backflow preventers, and NPT female inlet and outlet connections._Horizontal or vertical installation_Compact design_Lead free forged brass body for durability_Stainless steel internal parts_Specifications_Backflow Preventer Type Dual Check with Atmospheric Vent_Body Finish Brass_Body Material Lead Free Brass_Body Pattern Inline_Brand Watts_Bypass No_Cap And Tether No_Disc Material Rubber_EAN 098268028546_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 Female Threaded_Inlet Shutoff Valve Type No Shutoff Valve_Inlet Thread Type NPT_Lead Free YES_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 Union Female Threaded_Outlet Shutoff Valve Type No Shutoff Valve_Outlet Thread Type NPT_Part Number 88006832_Polymer Coating No_Pressure Operation Continuous_Protection Type Backpressure and Backsiphonage_Seat Material Rubber_Series LF9D_Strainer Yes