Glow-worm
Glow-worm Tube Expansion Vessel 0020097305
Tube expansion vessel for Glow-worm Ultracom 2 boilers, part number 0020097305.
At a glance
- Appliance family: Ultracom 2
- Also known as 1340290
Showing prices
£10.34
£8.62 ex. VAT · VAT at 20%
Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
Tube expansion vessel for Glow-worm Ultracom 2 boilers. It absorbs pressure changes in the heating circuit as water heats and expands, helping to maintain stable system pressure. Manufacturer part number 0020097305.
Signs this part needs replacing
- Boiler pressure rises sharply when the heating is on and falls when it cools.
- Frequent need to top up system pressure.
- Water discharging from the pressure relief valve.
- Pressure gauge reading fluctuates without obvious cause.
- Visible corrosion or water staining around the vessel connection.
Before you order
- Confirm your boiler model matches one listed in the Fits section.
- Check the existing part number on the component or in the manufacturer's parts list.
- Verify whether your appliance uses a tube expansion vessel rather than a different vessel type.
- Have the GC number to hand when checking compatibility.
Compliance
| Alternative numbers | 1340290 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| GLOWWORM ULTRACOM 2 12SXi | 41-019-12 | 41-019-12 | — | — |
| GLOWWORM ULTRACOM 2 18SXi | 41-019-13 | 41-019-13 | — | — |
| GLOWWORM ULTRACOM 2 24CXi | 47-019-10 | 47-019-10 | — | — |
| GLOWWORM ULTRACOM 2 30CXi | 47-019-11 | 47-019-11 | — | — |
| GLOWWORM ULTRACOM 2 30SXi | 41-019-14 | 41-019-14 | — | — |
| GLOWWORM ULTRACOM 2 35CXi | 47-019-12 | 47-019-12 | — | — |
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
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.
manual
GLOWWORM appliance manual — ULTRACOM 2 12SXi (GC 41-019-12)
manualmanualGLOWWORM appliance manual — ULTRACOM 2 18SXi (GC 41-019-13)
manualmanualGLOWWORM appliance manual — ULTRACOM 2 24CXi (GC 47-019-10)
manualmanualGLOWWORM appliance manual — ULTRACOM 2 30CXi (GC 47-019-11)
manualmanualGLOWWORM appliance manual — ULTRACOM 2 30SXi (GC 41-019-14)
manualmanualGLOWWORM appliance manual — ULTRACOM 2 35CXi (GC 47-019-12)
manualNo technical questions yet for this part.
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