Air Release Valve, FNPT, 3/4 x 1/2, CI Price For: Each Float Material: 316 Stainless Steel Min. Pressure: 5 psi Max. Fluid Temp.: 250 Degrees F Body Material: Cast Iron Vacuum Pressure: 29" Hg Connection Type: FNPT Outlet Size: 1/2" Standards: FM, NSF61, UL Listed, ASTM A126, Class B Item: Air Release Valve Inlet Size: 3/4" Max. Vent Capacity: 6 scfm at 150 psi Max. Pressure: 175 psi Application: Clean Water Country of Origin (subject to change): United States