Reduced Pressure Zone Backflow Preventer Series Wilkins 375 Size 1 1/4 in Connection FNPT X FNPT Body Material Bronze Valve Body and Shut Off Valves Composite Housing and Check Modules Temp Range 33 Degrees to 180 Degrees F Max Temp 180 Degrees F Max Pressure 175 psi Width 3 3/4 in Length 14 7/8 in Standards ASSE 1013 Foundation for Cross Section Control and Hydraulic Reaeearch At USC Compliance C-UL CSA FM IAPMO UL