Worcester Air Vent Caleffi 502632 Cst 87161405040

• The Auto air vent is a part in the boiler.
• They work by utilizing lightness to discharge developed air.
• As water courses through the pipework a float inside the auto air vent opens or closes dependant on the air within the system.
• If the pipework is full of water, the float rises to the top and the vent will be shut until the water level drops.