Sol Zvsg 5 Ltr Solar Cool Vessel

The VSG range of Vessels is specifically designed for Solar Thermal Systems to provide a buffer of un-circulated liquid. This buffer of cooler water is displaced during expansion and contraction of the fluid caused by heating and cooling of the system. Having this buffer means that it is the cooler un-circulated liquid which is in direct contact with the main expansion vessel, the lower temperature preserves the integrity of the membrane.