Vacuum Breaker Size 1/2 in Connection Type FNPT x FNPT Material of Construction Cast Brass Cast Bronze Polypropylene Silicone Ultem Seal Buna Nitrile Max Pressure 125 psi Temp Range 180 Degrees F Height 2 1/2 in Width 1 5/16 in Standards ASSE 1001 CSA IAPMO