Closed Expansion Tank

Prevention of corrosion

By the contact of piping system and air is completely intercepted, an air (or oxygen) can not be mixed. This prevents the corrosion and extends a piping life far.

Excellent air venting capacity

By the piping system is maintained at an appropriate positive

pressure, the air venting capacity is excellent at piping system.

No limitation in establishment place

It can be installed every position, so there is not worry about frozen to burst in low temperature area and the space application is convenient cleans and protects the installation.

Smooth operation capacity

By the matter due to mixing of air decrease, efficient operation is possible. (circulating obstacle, pump efficiency decrease, sound arresting, vibrating, make up pump hunting and so on)