Baxi
Baxi Expansion Vessel Nut G1/4 7661811
Baxi G1/4 inch nut for the expansion vessel connection on 224, 228, 424, 428 and 430 combi boilers.
At a glance
- Also known as 1132184
£7.18
£5.98 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 Baxi 7661811 is a G1/4 inch nut used at the expansion vessel connection on Baxi combi boilers. It secures the vessel to the hydraulic assembly and forms part of the sealed circuit. It is a serviceable component, replaced when the original nut is damaged or no longer seals correctly.
Signs this part needs replacing
- Weeping or dripping at the expansion vessel connection
- Visible corrosion or pitting on the nut
- Rounded or crossed threads preventing correct tightening
- Damp staining or scale deposits around the connection
- Repeated pressure loss traced to the vessel joint
Before you order
- Confirm your boiler model against the fit list above
- Check the connection thread is G1/4 inch
- Inspect the mating face and washer for damage before refitting
- Verify the part number 7661811 against the manufacturer's parts list
Compliance
| Alternative numbers | 1132184 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI 224 COMBI 2 | 47-077-48 | 47-077-48 | — | — |
| BAXI 224 ErP COMBI | 47-077-21 | 47-077-21 | — | — |
| BAXI 224 LPG COMBI 2 | 47-077-50 | 47-077-50 | — | — |
| BAXI 228 COMBI 2 | 47-077-49 | 47-077-49 | — | — |
| BAXI 228 ErP COMBI | 47-077-22 | 47-077-22 | — | — |
| 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 | 47-077-23 | 47-077-23 | — | — |
| BAXI 424 LPG COMBI 2 | 47-077-53 | 47-077-53 | — | — |
| BAXI 428 ErP COMBI | 47-077-24 | 47-077-24 | — | — |
Showing 10 of 13 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.
BAXI appliance manual — 224 COMBI 2 (GC 47-077-48), 224 LPG COMBI 2 (GC 47-077-50), 228 COMBI 2 (GC 47-077-49)
manualmanualBAXI appliance manual — 224 ErP COMBI (GC 47-077-21), 228 ErP COMBI (GC 47-077-22), 424 ErP COMBI (GC 47-077-23), 428 ErP COMBI (GC 47-077-24)
manualmanualBAXI appliance manual — 424 COMBI 2 (GC 47-077-51), 424 LPG COMBI 2 (GC 47-077-53), 430 COMBI 2 (GC 47-077-52), 430 LPG COMBI 2 (GC 47-077-54)
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