The Worcester Bosch expansion vessel is for Greenstar and Greenstar Oil boilers. The chamber is designed to protect water heating systems from excess pressure. The expansion vessel is filled with air, which acts as a cushion against system pressure surges.
Can not be used for drinking water
Technical specification
Waist Sizeaa18ci13gtToilet Cistern CapacityFTW--Capacity7 LSupplier Part Number87154072960Brand NameWorcester Bosch