The Baxi 7693978 is a genuine OEM 3-way valve assembly designed for use in selected Baxi, Main, and Potterton boiler models. This hydraulic component is responsible for diverting heated water between the domestic hot water (DHW) circuit and the central heating (CH) system, ensuring the boiler responds correctly to demand.

A worn or faulty 3-way valve can cause issues such as no hot water, radiators heating when taps are opened, slow switching, fluctuating temperatures, or diverter-related error codes. Replacing the entire assembly with this genuine Baxi part restores accurate water routing and dependable system performance.

Key Features:

• Genuine Baxi 3-way diverter valve assembly

• Controls water flow between CH and DHW circuits

• Ensures smooth and reliable switching based on demand

• Helps resolve hot/cold cycling, HW priority faults & crossover heating

• Manufactured to strict Baxi OEM performance and durability standards

• Complete assembly for fast, direct-fit professional installation

• Essential for restoring consistent hot water & heating operation

Compatibility

The Baxi 7693978 3-Way Valve Assembly is compatible with selected models across:

• Baxi boilers

• Main boilers

• Potterton boilers

Typical compatible ranges include (varies by model):

• Baxi Duo-tec

• Baxi Platinum

• Main Eco / Eco Elite

• Potterton Promax

Any appliance listing 7693978 in its official parts documentation will accept this valve assembly.

Engineers should always verify exact compatibility using the boiler’s model-specific service manual or parts list.