Saunier Duval Automatic Air Vent is a pressure safety device in the central heating unit. They work by using a floatation device to release accumulated air. As water flows through the heating and heating system a float within the automatic air vent opens or closes.
Fits a number of Glow-worm and Saunier Duval Boilers
Technical specification
TypeAutomatic Air VentMaterialMixedColourMixedManufacturer Model NoS1005600Brand NameSaunier Duval