The Baxi automatic air vent is a pressure safety device in the central heating unit. They work by using buoyancy to release built-up air. As water flows through the heating and cooling system a float within the AAV (Automatic air vent) opens or closes depending.
Fits multiple Baxi appliances
Technical specification
TypeAir Vent Pipe AssemblyManufacturer Model No5122322Brand NameBaxi