Reduced Pressure Zone Backflow Preventer Series Wilkins 975XL Size 3/4 in Connection FNPT X FNPT Body Material Bronze Temp Range 33 Degrees to 140 Degrees F Max Temp 140 Degrees F Max Pressure 175 psi Width 5 1/8 in Length 12 in Standards ASSE 1013 Foundation for Cross Section Control and Hydraulic Reaeearch At USC Compliance ASSE 1013 C511 CSA B64.4