Product Information: 
The expansion vessel is a tank that is used to protect water heating systems from excessive pressure. The expansion vessel is filled with air that acts as a cushion against surges in pressure within the system.

Brand: Ideal
This Part Fits: Ideal Domestic RESPONSE 120, Ideal Domestic RESPONSE 100, Ideal Domestic RESPONSE 80, Ideal Domestic RESPONSE FF 80
Model Number: 075200