Caleffi Brass Air Relief Valve

These automatic air vents eliminate residual air in heating and air conditioning systems without the need for manual intervention. This prevents undesired noise, wear of devices in the circuits and inefficient performance of heating units.

Installation – Air is vented from the system by turning the plug on the air outlet anticlockwise by one complete turn from the fully closed position. Air is automatically vented if the cap is kept in this position. – It is recommended that the air vents are not fitted in places difficult to inspect and at risk of freezing.