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Brass Flow Assembly Valve Without Bypass - Duo-Tec 2/Promax

Part number (MPN)
720789401
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retailer parts list
checked 2026-11-06
Fitting notes

Work on gas appliances must be carried out by a Gas Safe registered engineer. Check the model and serial number on the boiler data plate. Source: a parts retailer's list, not the manufacturer's: confirm the part number on the data plate or with the manufacturer before ordering.

Compatible appliances

Always check the model and serial number on the data plate before ordering.

Frequently asked questions

Which appliances does 720789401 fit?

The sources we checked list 720789401 (Brass Flow Assembly Valve Without Bypass - Duo-Tec 2/Promax, Baxi) for: Baxi Duotec 2 Combi Ga 24, Baxi Duotec 2 Combi Ga 28, Baxi Duotec 2 Combi Ga 33, Baxi Duotec 2 Combi Ga 40, Baxi Platinum 2 Combi Ga 28, Baxi Platinum 2 Combi Ga 33, Baxi Platinum 2 Combi Ga 40. Always check the model and serial number on the data plate before ordering.

Does 720789401 have equivalent or superseded part numbers?

The sources we checked list no equivalents for 720789401. Ask a Baxi stockist to confirm.

What should I check before fitting 720789401?

Work on gas appliances must be carried out by a Gas Safe registered engineer. Check the model and serial number on the boiler data plate. Source: a parts retailer's list, not the manufacturer's: confirm the part number on the data plate or with the manufacturer before ordering.

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Some lists are dated and the part may have been superseded. Information only, compatibility not guaranteed.