Backflow Preventer Size 1 1/2 in Connection NPT Body Material Copper Silicon Alloy Temp Range 33 Degrees to 180 Degrees F Max Temp 180 Degrees F Max Pressure 175 psi Width 5 13/16 in Length 21 3/4 in Height 7 1/16 in Features Compact Design Ease of Maintenance-Only One Cover Low Pressure Drop Modular Construction No Special Tools Required for Servicing Replaceable Seats and Seat Discs Top Entry Top Mounted Ball Valve Test Cocks