Welded expansion vessel only for primary circuit of solar thermal systems Caleffi 259

Welded expansion vessel only for primary circuit of solar thermal systems Caleffi 259

The closed expansion vessel with membrane consists of a closed container divided into two parts by a membrane which separates water from gas (nitrogen or air) and which acts as an expansion compensation device. After the temperature of the medium increases, the pressure inside the vessel keeps rising from its cold preset value, until the maximum expansion value is reached.

Product description:

Brand:Caleffi S.p.a

Welded expansion vessel only for primary circuit of solar thermal systems, EC certification.

Bladder membrane.

Max. working pressure: 10 bar.

System working temperature range: -10–120 °C.

Membrane working temperature range: -10–70 °C.

Max. percentage of glycol: 50 %.

Conformity to EN 13831 standard.