Caleffi Brass Air Relief Valve Fitting:CALEFFI 15MM (1/2") MI BRASS AIR RELIEF VALVE sleek and classy in appearance

sleek and classy in appearance

13mm Air Release Valve Kit

5V AA alkaline batteries (included)

Ideal for dewatering of cellars and garages

Caleffi Brass Air Relief Valve Fitting:CALEFFI 15MM (1/2") MI BRASS AIR RELIEF VALVE sleek and classy in appearanceThese 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