Zilmet 12Ltr Rectangular Vessel Z1-13N6001200 13N6001200
Expansion Vessels is specifically designed for Unvented Systems when used as part of an additional piece of technology. The purpose of these vessels is to accommodate the increased liquid volume which occurs during system heating in an Unvented Circuit. A pressurised membrane allows ingress/egress of the liquid only during periods of heating / cooling.
The correct size of vessel must be considered prior to installation and installed by appropriately trained engineers.