The Ravenheat automatic air vent is a pressure protection measure for the central heating unit. It works by using a floatation device to release built-up air. As water flows through the heating and 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.
New type
Technical specification
Waist Sizeab29cc19gsTypeAutomatic Air VentSupplier Part Number5015015/NBrand NameRavenheat