Skip to content

What is a type AB air gap?

A Type AB air gap is a non-mechanical backflow prevention arrangement comprising of an inlet, receiving tank and unrestricted weir overflow (rectangular or non-circular).

A weir air gap (Type AB) is needed to stop contaminated water mixing with the mains water and sits directly below the water discharge point.

TankBoost CAT 5 water tank features an air gap between the inlet and outlet to ensure that the water in the tank or cistern does not flow back into the mains supply.

View all FAQs

Chat Offline: Leave A Message Speech bubbles icon