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Safety Valve - 3 Bar - Duo-Tec/Promax

Part number (MPN)
720787801
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Source
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 720787801 fit?

The sources we checked list 720787801 (Safety Valve - 3 Bar - Duo-Tec/Promax, Baxi) for: DUO-TEC 2 24 COMBI NG, DUO-TEC 2 28 COMBI NG, DUO-TEC 2 40 COMBI NG, 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 Ecoblue Advance Combi ErP 24, Baxi Ecoblue Advance Combi ErP 28, Baxi Ecoblue Advance Combi ErP 33, Baxi Ecoblue Advance Combi ErP 40, ECOBLUE ADVANCED 24 COMBI NG, ECOBLUE ADVANCED 28 COMBI NG, ECOBLUE ADVANCED 33 COMBI NG, ECOBLUE ADVANCED 40 COMBI NG, Baxi Platinum 2 Combi Ga 28, Baxi Platinum 2 Combi Ga 33, Baxi Platinum 2 Combi Ga 40, PROMAX ULTRA 24 COMBI NG, PROMAX ULTRA 28 COMBI NG, PROMAX ULTRA 33 COMBI NG, PROMAX ULTRA 40 COMBI NG, PROMAX ULTRACOMBI ERP 24 SN BC, PROMAX ULTRACOMBI ERP 28 SN BC, PROMAX ULTRACOMBI ERP 33 SN BC, PROMAX ULTRACOMBI ERP 40 SN BC. Always check the model and serial number on the data plate before ordering.

Does 720787801 have equivalent or superseded part numbers?

The sources we checked list no equivalents for 720787801. Ask a Baxi stockist to confirm.

What should I check before fitting 720787801?

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Some lists are dated and the part may have been superseded.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.