HRM Auto Air Vent 1/2" COM317

Auto Air Vent HRM 1/2"

The Automatic Air Vent is a pressure safety device used to let unwanted air out of the system. The air vent is automatic by shutting itself off when water is entered into the device. The device works using a float which is located within the Automatic Air Vent and as water comes through, the float lifts up and shuts off the valve. This will then stay shut until the water level decrease and the float drops with it, the vent will then reopen.