Alpha Automatic Air Vent 1.010771

Alpha

The Alpha Automatic Air Vent 1. 010771 is a genuine Alpha spare part with an Alpha manufacturer's guarantee. An Automatic Air Vent (AAV) is a safety device within the central heating appliance. Air vents work by using buoyancy to release built up air. As water flows through the heating or cooling system, a float within the automatic air vent opens or closes.