Grant Oil Boiler Auto Air Vent (Aav)
The automatic air vent is a safety device within the central heating unit. They work by using a float to release an accumulation of air. As water circulates through the heating/cooling system, a float within the automatic air vent opens or closes depending on the water level. If the system contains no air, the float will be pushed to the top and the vent will be closed until the water level drops.
GRANT MPCBS29 AUTO AIRVENT
Part No: 2160022 / MPN: MPCBS29
GRANT MPCBS68 MANUAL AIR VENT
Part No: 2160430 / MPN: MPCBS68
GRANT VBS61M MANUAL AIR VENT ASSEMBLY 22MM
Part No: 2160320 / MPN: VBS61M