AIR VALVE HOFFMAN #75H 3/4X1/2

75-H Air ValvesFloat type vents, each with single non-adjustable port for relieving air from the mains of medium nd large systems. 1/2” NPT female and 3/4” NPT male straight shank. Operating pressure up to 3 psi (75) and up to 10 psi (75H). Maximum pressure of 15 psi.