Duotec Auto Air Vent Kit 720004701
Baxi Air Vent 720004701
For use with the following Baxi boilers:
BAXI DUOTEC 24HE A
and BAXI DUOTEC 28HE A
with BAXI DUOTEC 33HE A
plus BAXI DUOTEC 40HE
The automatic air vent is a pressure safeguard in the central heating unit.
They work by using a floatation device to release accumulated air.
As water flows 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.
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