Expansion vessel CR8- DIFF pour Viessmann - 7828646

The CR8 expansion vessel – DIFF for Viessmann, reference 7828646, is an essential component of the heating system. It absorbs water volume changes caused by temperature fluctuations, helping to maintain stable pressure throughout the circuit.


Designed to replace a worn or faulty expansion vessel, this compatible part helps protect the heating system against overpressure and contributes to the longevity of the installation.


Technical information



Type: Heating expansion vessel
Model: CR8
Reference: 7828646
Compatible with Viessmann boilers
DIFF replacement part
Compensates for heating fluid volume variations
Helps maintain stable circuit pressure

Safety information:
Disconnect the boiler and release pressure from the heating circuit before any intervention.





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