If it is a residential heating boiler, it is usually replaced once every 1-2 years. If it is your own radiator, it is best to replace it once a year.
Brief introduction of automatic exhaust valve:
Automatic exhaust valve is a device used to exhaust air in HVAC system and HVAC system during operation. During the operation of HVAC system and HVAC system, many adverse effects caused by hydrogen, oxygen and other gases released by water during heating will damage the system and reduce the thermal effect. If these gases cannot be discharged in time, there will be many adverse consequences.
Such as corrosion caused by oxidation; The formation of air bag in radiator; The circulation of hot water is not smooth and balanced, resulting in some radiators not being hot locally; Noise when the pipeline is running with gas; Vortex cavitation of circulating pump. Therefore, the exhaust gas in the system must be discharged in time, which shows the important role of using automatic exhaust valve.