Worcester Bosch
Worcester Bosch Pipe (Pressure Relief Valve) 8737604256
Pressure relief valve pipe for Worcester Bosch Greenstar 1000 Series and Gr1000W combi boilers.
At a glance
- Also known as 1038391
£22.25
£18.54 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
This is a pressure relief valve pipe manufactured by Worcester Bosch. It is designed for use in Greenstar 1000 Series and Gr1000W gas boilers. The pipe forms part of the pressure relief valve assembly, providing a safe route for discharged water when system pressure exceeds safe limits.
Signs this part needs replacing
- Water leaking from the pressure relief valve discharge pipe
- Boiler pressure dropping repeatedly or requiring frequent top-ups
- Visible corrosion, cracks, or damage on the pipe
- Dripping or weeping from the valve or pipe connections
- System pressure rising above normal levels
Before you order
- Confirm your boiler model matches one of the fitments listed above
- Check the part number 8737604256 against the component you are replacing
- Verify the GC number on your appliance against the manufacturer's parts list if unsure
- Ensure the pressure relief valve pipe is the correct part for your specific boiler variant
Compliance
| Alternative numbers | 1038391 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 1000 SERIES GR1000W 24 C NG | 47-800-38 | 47-800-38 | — | — |
| WORCESTER GREENSTAR 1000 SERIES GR1000W 30 C NG | 47-800-39 | 47-800-39 | — | — |
| WORCESTER GREENSTAR GR1000W 24 C NG | — | — | — | |
| WORCESTER GREENSTAR GR1000W 30 C NG | — | — | — |
Documents & drawings
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No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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