Vaillant 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 heating system a float within the automatic air vent opens or closes.
Colour is brass
Comes with O-ring and Clip
Fits multiple Vaillant boilers
Technical specification
TypeBypass ValveManufacturer Model No150240Brand NameVaillant