1/2" x 3/4" 75 Straight main vent
Item No: HOF75
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 male straight shank
- Maximum operating pressure: 3 psig (0.2 bar)(Drop away pressure - maximum pressure against which the vent can open).
- Maximum pressure 15 psig (1.0 bar)