Val-Matic 15R50-3At-C6v5y Air Release Valve, Fnpt, 1/2 X 1/2, Ci
Air Release Valve, Inlet Size 1/2 in, Outlet Size 1/2 in, Application Clean Water, Min. Fluid Temp. 250 Degrees F, Vacuum Pressure 29 in Hg, Body Material Cast Iron, Float Material 316 Stainless Steel, Standards AWWA C512, FM, NSF 372, NSF 61, UL.