Hoffman
Hoffman Air Valve 401437 75H, 1/2" x 3/4" Straight Steam Main Air Valve
Quantity:
Air Valve (non-vacuum)
Float-type thermostatic vent
For medium and large systems
Single non-adjustable port
1„2" NPT female and 3„4" NPT malestraight shank
Maximum operating pressure 10 psig (0.7 bar)(Drop away pressure - maximum pressure against which the vent can open).
Maximum pressure 15 psig (1.0 bar)