Hoffman
Hoffman Air Valve 401432 76, 1/2" x 3/4" Straight Main Steam Vacuum Valve
Quantity:
Vacuum Valve
Float-type themostatic vent
For medium and large one-pipe vacuum systems
Single non-adjustable port
1„2" NPT female and 3„4" NPT male straight shank
Install 6-10" (150-250mm) above horizontal return and8" (450mm) above the boiler water line
Maximum operating pressure 3 psig (0.2 bar)
Maximum pressure 15 psig (1.0 bar)