Product Information: The expansion vessel is a tank that is used to protect closed water systems from pressure surges. The expansion tank is filled with air that acts as a cushion against surges in pressure within the system.
This part is present in 8 different boilers in the Glowworm range including the Glowworm COMPACT 100 , COMPACT 60 , COMPACT 100 , COMPACT 100 , COMPACT 75 .