Baxi
Baxi Flow Hydroblock Assembly 7812538
Baxi flow hydroblock assembly, part number 7812538, for 400, 600, 800 and Assure Combi 2 appliances.
At a glance
- Also known as 1794962
£135.06
£112.55 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The flow hydroblock assembly is a Baxi hydraulic component used in the Combi 2 family of gas boilers. It forms part of the boiler's water circuit, handling the flow side of the domestic hot water and heating hydraulics. It is supplied under Baxi part number 7812538.
Signs this part needs replacing
- Water weeping or visible drips from the hydroblock body or its connections
- Unexplained loss of system pressure requiring repeated topping up
- Reduced or intermittent domestic hot water flow at the taps
- Scale, sludge or debris restricting flow through the block
- Cracking, corrosion or heat distortion on the hydroblock housing
Before you order
- Confirm your appliance model against the fitment list above
- Check the pressure gauge type fitted to your appliance where the model listing specifies a variant
- Compare the part number on the existing hydroblock with 7812538 before ordering
- Inspect associated seals and connections for condition while access is available
Compliance
| Alternative numbers | 1794962 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI 424 COMBI 2 | 47-077-51 | 47-077-51 | — | — |
| BAXI 424 COMBI 2 LPG | 47-077-53 | 47-077-53 | — | — |
| BAXI 424 ERP COMBI 2.1 | 47-077-74 | 47-077-74 | — | — |
| BAXI 424 LPG COMBI 2 | 47-077-53 | 47-077-53 | — | — |
| BAXI 430 COMBI 2 | 47-077-52 | 47-077-52 | — | — |
| BAXI 430 COMBI 2 LPG | 47-077-54 | 47-077-54 | — | — |
| BAXI 430 ERP COMBI 2.1 | 47-077-75 | 47-077-75 | — | — |
| BAXI 430 LPG COMBI 2 | 47-077-54 | 47-077-54 | — | — |
| BAXI 436 ERP COMBI 2.1 | 47-077-76 | 47-077-76 | — | — |
| BAXI 624 COMBI 2 - FRONT FACING ANALOGUE PRESSURE GAUGE | 47-077-55 | 47-077-55 | — | — |
Showing 10 of 27 compatible appliances.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
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