Automatic air vents should be replaced every three to five years, in any case.

Automatic air vents contain a valve that is operated by a float.

Various devices such as manual and automatic air vents are used to address free air which floats up to the high points throughout the system.

They have automatic air vents designed to permit air to escape by itself from the radiator as steam enters.

Automatic Air Vents The Altecnic range of automatic air vents is designed for use in conjunction with heating systems and potable water supplies.