Vaillant
Vaillant Expansion Vessel 0020181041
25-litre expansion vessel for Vaillant unvented hot water cylinders, part number 0020181041.
At a glance
- Also known as 1379434
£290.26
£241.88 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 Vaillant 0020181041 is a 25-litre expansion vessel for Vaillant unvented hot water cylinders. It absorbs the expansion of heated water within the sealed system, maintaining safe operating pressure. It is used across the Vaillant VIH, Vantage, auroSTOR and uniSTOR cylinder ranges.
Signs this part needs replacing
- Pressure relief valve discharging water during heating cycles
- System pressure fluctuating or dropping repeatedly
- Water or air leaking from the vessel's connection or valve
- Visible corrosion or deformation of the vessel body
- Boiler or cylinder locking out due to pressure faults
Before you order
- Confirm your cylinder model appears in the Fits list
- Check the existing vessel is rated at 25 litres
- Verify the part number 0020181041 against your appliance's parts list
Compliance
| Barcode / EAN | 4024074698587 |
|---|---|
| Alternative numbers | 1379434 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VANTAGE VIH GB 180/3 BES | — | — | — | |
| VAILLANT VANTAGE VIH GB 200/3 BES | — | — | — | |
| VAILLANT VANTAGE VIH GB 250/3 BES | — | — | — | |
| VAILLANT VANTAGE VIH GB 260/2 S | — | — | — | |
| VAILLANT VANTAGE VIH GB 300/3 BES | — | — | — | |
| VAILLANT VANTAGE VIH GB 310/2 S | — | — | — | |
| VAILLANT VANTAGE VIH S GB 200/3 BES | — | — | — | |
| VAILLANT VANTAGE VIH S GB 250/3 BES | — | — | — | |
| VAILLANT VANTAGE VIH S GB 300/3 BES | — | — | — | |
| VAILLANT VIH GB 180/3 BES | — | — | — |
Showing 10 of 28 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.
VAILLANT appliance manual — VANTAGE VIH GB 180/3 BES, VANTAGE VIH GB 200/3 BES, VANTAGE VIH GB 250/3 BES, VANTAGE VIH GB 300/3 BES, VIH GB 180/3 BES, VIH GB 200/3 BES, VIH GB 250/3 BES, VIH GB 300/3 BES
manualmanualVAILLANT appliance manual — VANTAGE VIH S GB 200/3 BES, VANTAGE VIH S GB 250/3 BES, VANTAGE VIH S GB 300/3 BES, VIH S GB 200/3 BES, VIH S GB 250/3 BES, VIH S GB 300/3 BES
manualmanualVAILLANT appliance manual — VIH GB 260/2 S, VIH GB 310/2 S, uniSTOR VIH GB 260/2 S (2011), uniSTOR VIH GB 310/2 S (2011)
manualmanualVAILLANT appliance manual — auroSTOR VIH S GB 260/2 S (2011), auroSTOR VIH S GB 310/2 S (2011)
manualmanualVAILLANT appliance manual — uniSTOR VIH GB 260 S (2005-2011), uniSTOR VIH GB 310 S (2005-2011)
manualNo technical questions yet for this part.
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