Watts 957Z BFG FS 4 Part of the 957 Series Window Well Extension The panels can be installed The panels can be installed either as a long linear line of defense or you can connect them with a 90° angle 50 Minimum Temperature Fahrenheit 33 Outlet Connection Size 1 1 2 IN Outlet Connection Type Female Threaded Outlet Shutoff Valve Type Quarter Turn Ball Valve Outlet Thread Type NPT Part Number 0388104 Polymer Coating No Pressure Operation Continuous Protection Type Backsiphonage Seat Material Plastic Series 800M4QT Strainer No Technologies Does Not Apply To Product Specification Sheet 800M4QT 10 Maximum Working Pressure PSI 175 Meter Type No Meter Minimum Temperature Celsius 0 This extremely compact and lighter than a traditional designed assembly is approved for horizontal Z pattern installation as long as the backflow assembly is installed in accordance with the direction of the flow arrow