Air Vacuum Valve, Inlet Size 2 in, Outlet Size 2 in, Application Clean Water, Min. Pressure 5 psi, Max. Pressure 300 psi, Connection Type FNPT, Max. Fluid Temp. 250 Degrees F, Vacuum Pressure 29 in Hg, Body Material Cast Iron, Float Material 316 Stainless Steel, Standards ASTM A126 Class B, UL Listed