Watts LF009 QT 1 2 0391002 1 2 IN Lead Free Reduced Pressure Zone Backflow Preventer Assembly, 1 X47001 #14 12 Steel Core #14 12 Steel Core Tracer Wire CCS Three way ON OFF AUTO manual override 50 Minimum Temperature Fahrenheit 33 Outlet Connection Size 1 2 IN Outlet Connection Type Female Threaded Outlet Shutoff Valve Type Quarter Turn Ball Valve Outlet Thread Type NPT Part Number 0391002 Polymer Coating No Pressure Operation Continuous Protection Type Backpressure and Backsiphonage Seat Material Engineered Plastic Series LF009 Strainer No Tradename None It is ideal for protection in continuous pressure piping applications and at cross connections identified as health hazards and for contaminants at the service line entrance