Aven 100901 3/8" Automatic Air Vent Cable Float Netafim Vacuum Breaker - Air

Netafim Vacuum Breaker - Air release valve with ½" BSP thread

which is at times too high for domestic appliances

Official Puretec MB20LD2 webpage

20mm (¾") female BSP threaded Gas Approved ball valve with butterfly handle

Aven 100901 3/8" Automatic Air Vent Cable Float Netafim Vacuum Breaker - AirHigh quality automatic air vents for use in heating systems to vent air when commissioning a system. The device is available with either 3 8" or 1 2" MBSP connection. The device consists of a polypropylene float connected to a simple valve. When the build up of air within the float chamber exceeds a certain level the float drops, opening the valve and releasing the air trapped within the chamber. As the air is released, water replaces it, and moves