The Grant automatic air vent is a pressure safety device in the central heating unit. They work by using a float to release accumulated air. As water flows through the heating or cooling system a float within the automatic air vent (AAV) opens or closes dependant.
Fits a number of appliances
Ideal for Vortex Pro combi
Technical specification
Waist Sizeaa87ch12fwTypeManual Air VentSupplier Part NumberMPCBS68Brand NameGrant