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Expansion vessel open on primary circuit

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Expansion vessel open on primary circuit

It is a tank placed at the highest point of the installation. It is open to the air and constitutes a water reserve. It is often found on dilapidated installations. It acts as safety in the event of boiling (no increase in pressure).

This system regularly used with boilers is the best security that can be conceived (no mechanics).

It has the disadvantage of a permanent absorption of oxygen by the heating water. This is all the more important as a circulation is maintained in the vessel in the case of a return-return circuit (to be avoided with heated floors).

Technical characteristics

  • Dimensions EXR (pdf, 232.77 KB)
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