Potterton
Potterton Pressure/Temperature Relief Valve 5139805
Pressure and temperature relief valve for Potterton Commercial IHE 100/300 and IHE 150/300 boilers, part number 5139805.
£308.22
£256.85 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 pressure/temperature relief valve is a safety component fitted to Potterton Commercial boilers. It opens to discharge water when system pressure or temperature exceeds the valve's set limits, protecting the appliance and the heating circuit. This valve is supplied under Potterton part number 5139805.
Signs this part needs replacing
- Water discharging from the valve outlet when the system is not over-pressure or overheated
- Continual weeping or dripping from the discharge pipe with system pressure dropping
- System pressure repeatedly falling and needing regular top-ups
- Scale or corrosion deposits visible around the valve seat or outlet
- Valve fails to operate or reseat correctly when manually tested
Before you order
- Confirm the boiler model matches one of the fitments listed above
- Check the part number marked on the existing valve against 5139805
- Verify the pressure and temperature ratings required by the appliance before fitting
- Isolate the appliance, drain down and depressurise before removing the old valve
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| POTTERTON COMMERCIAL IHE 100/300 | — | — | — | |
| POTTERTON COMMERCIAL IHE 150/300 | — | — | — | |
| POTTERTON COMMERCIAL POTTERTON COMMERCIAL SPARES | — | — | — |
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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