Glow-worm
Glow-worm Temperature / Pressure Relief Valve 0020018589
Temperature and pressure relief valve for Glow-worm Energy 35 Store and Xtramax HE boilers, part number 0020018589.
At a glance
- Also known as 1337539
£119.05
£99.21 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 0020018589 is a temperature and pressure relief valve manufactured by Glow-worm for use in its gas boilers. It is fitted to the Energy 35 Store and Xtramax HE appliances, where it discharges water if the stored water temperature or system pressure exceeds safe operating limits. The valve protects the appliance and the connected system from over-pressure and over-temperature conditions.
Signs this part needs replacing
- Water dripping or discharging from the relief valve outlet when the system is cold
- Boiler or cylinder losing pressure repeatedly with no other visible leak
- Discharge pipe running continuously or passing water during normal operation
- Valve failing to reseat after a pressure or temperature event
- Limescale, corrosion or debris visible around the valve body or seat
Before you order
- Confirm the appliance model and, where shown, the GC number against the fitment list above
- Check the part number on the existing valve matches 0020018589
- Identify whether the valve serves the heating circuit or the domestic hot water store before ordering
- Inspect the discharge pipework and tundish for signs of scale or blockage that may have caused the fault
Compliance
| Alternative numbers | 1337539 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| GLOWWORM ENERGY 35 STORE | — | — | — | |
| GLOWWORM ENERGY 35 STORE | 47-019-37 | 47-019-37 | — | — |
| GLOWWORM XTRAMAX HE | 47-047-29 | 47-047-29 | — | — |
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.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.