Spirotech demonstrates the AutoClose function of its solar deaerators in this video.

This short animation from Spirotech demonstrates the AutoClose function of its solar deaerators, which closes the air vent before boiling temperature is reached.

Extremely high temperatures can occur in solar systems, which leads to the formation of steam. Valves are installed to prevent vapour release and overheating. Without valves, solar systems can even boil dry. 

Spirotech can offer a solar product range with the so-called AutoClose function. These valves only close when it is really necessary.