Freeze Resistant Vacuum Breaker Size 1 in Connection Type FNPT Material of Construction Cast Bronze Seal Silicone Max Pressure 150 psi Temp Range 33 Degrees to 140 Degrees F Height 7 1/2 in Width 7 1/2 in Standards ANSI IAPMO USC Compliance ASSE 1020 CSA B64.12 UPC USC