Air Release/Air Vacuum Valve, Inlet Size 3 in, Outlet Size 3 in, Application Clean Water, Min.
250 Degrees F, Vacuum Pressure 29 in Hg, Body Material Cast Iron, Float Material 316 Stainless Steel, Standards NSF61, ASTM A126, Class B Valve Air Release and Vac,FNPT,3 x3,CI.