DIVERTER VALVE, MOTOR AND SPINDLE- DIFF pour Saunier Duval - 8000041518

The bypass valve with motor and shaft allows water flow to be directed between different circuits in the heating system, ensuring efficient and controlled heat distribution.


It contributes to optimal heating regulation and protection of internal components by ensuring precise fluid movement. Its reliable operation is essential to the overall performance of the system.


Technical information :



Equivalent SAUNIER DUVAL reference : 8000041518.
Directs the flow of water between circuits as required.
Precise and reliable heating control.
Long-lasting and stable operation over time.

Correct installation ensures that the system continues to function properly and that the installation remains safe.


Safety information :


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







The ISOTHERM parts are created, manufactured and tested by Isotherm. They offer all the guarantees of interchangeability and quality of the parts they replace.