Hoffman Air Valve 401467 71C, 1/2" x 3/4" Straight Steam Convector Air Valve

Air Valve (non-vacuum)
Float-type vent
Single non-adjustable port
Meets Federal Specification WW-V-151 for Type 1Non-Adjustable Valves
Telescopic siphon tube with angle cut assures drainage
1„2" NPT female and 3„4" NPT male straight shank
Maximum operating pressure 11 psig (0.8 bar) (Drop away pressure - maximum pressure against which the vent can open).
Maximum pressure 15 psig (1.0 bar)