Vaillant
Vaillant Pressure Relief Valve 20127600
Pressure relief valve for Vaillant VIH and auroSTOR unvented cylinders and boilers, manufacturer part number 20127600.
At a glance
- Also known as 1385235
£63.24
£52.70 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 pressure relief valve (part number 20127600) is a safety component fitted to Vaillant VIH and auroSTOR unvented cylinders and associated boiler installations. It opens to discharge water if system pressure exceeds the valve's set limit, protecting the cylinder and pipework from over-pressurisation. It is a serviceable spare for the appliance families listed below.
Signs this part needs replacing
- Water discharging from the tundish or discharge pipe when the cylinder is heating.
- A constant drip from the discharge pipe with no obvious cause.
- System pressure falling repeatedly or failing to hold.
- The valve fails to reseat after manual testing.
- Visible scale, corrosion or debris around the valve outlet.
Before you order
- Confirm your appliance model against the fitment list above.
- Check the existing valve's part number matches 20127600.
- Verify the connection size and pressure rating of the existing valve before ordering.
- If in doubt, consult the manufacturer's parts list for your model.
Compliance
| Barcode / EAN | 4024074604984 |
|---|---|
| Alternative numbers | 1385235 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VANTAGE VIH GB 120/3 BES | — | — | — | |
| VAILLANT VANTAGE VIH GB 150/3 BES | — | — | — | |
| VAILLANT VANTAGE VIH GB 180/2 S | — | — | — | |
| 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 | — | — | — |
Showing 10 of 34 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 120/3 BES, VANTAGE VIH GB 150/3 BES, 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 120/3 BES, VIH GB 150/3 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 180/2 S, VIH GB 260/2 S, VIH GB 310/2 S, uniSTOR VIH GB 180/2 S (2011), uniSTOR VIH GB 260/2 S (2011), uniSTOR VIH GB 310/2 S (2011)
manualmanualVAILLANT appliance manual — auroSTOR VIH S GB 210/2 S (2011), auroSTOR VIH S GB 260/2 S (2011), auroSTOR VIH S GB 310/2 S (2011)
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