Product Information: The expansion vessel is a tank that is used to protect closed heating systems from excessive pressure. The expansion tank is filled with air that acts as a cushion against pressure surges within the system.
This part is present in 5 different boilers in the Vaillant range including the Vaillant VC 180 T , VC 142 E , VC 112 E , VC 110 XT , VC 110 T .