Reduced Pressure Zone Backflow Preventer Series Apollo 4ALF-200 Size 1 in Connection FNPT Body Material Lead Free Bronze Temp Range 33 Degrees to 180 Degrees F Max Temp 180 Degrees F Max Pressure 175 psi Width 3 1/4 in Length 14 5/8 in Height 8 in Standards ARRA ASSE 1013 CSA B64.4 USC FCCCHR