Hoffman 43, 1/4" Straight Steam Convector Air Valve

Air Valve (non-vacuum) Single non-adjustable port For small steam systems Telescopic siphon tube with angle cut assures drainage 1/4" NPT straight shank Maximum operating pressure 6 psig (0.4 bar)(Drop away pressure - maximum pressure against which the vent can open). Maximum pressure 10 psig (0.7 bar)