Expansion tank- DIFF pour Vaillant - 0020237676

The expansion tank absorbs changes in the volume of water in the heating circuit to maintain a stable pressure within the system.


It helps to protect components and ensure the system operates correctly by limiting pressure surges caused by water expansion.


Technical information :



DIFF replacement part for Vaillant ref : 0020237676
Designed for heating systems
Enables circuit pressure stabilisation

A correctly installed system ensures effective pressure regulation and the proper functioning of the heating system.


Safety information :


Before carrying out any work, switch off the power supply to the appliance and shut off the water and gas supplies.




Additional information:
This part is an original spare part from parts manufacturer, it is labelled and packaged under the DIFF distribution brand