The expansion vessel is a tank that is used to protect closed heating systems from pressure surges. The pressure vessel is filled with air that acts as a cushion against pressure surges within the system.
This part is present in 4 different boilers in the Keston range including the Keston C36 COMBI , QUDOS 28sP , QUDOS 28sP , CELSIUS 25 . In the next tab there is an appliance grid with links to all boilers that contain this part.
We recommend that all parts are fitted by a fully qualified gas safe certified technician.