Glow-worm
Glow-worm Hydraulic Block 0020118181
Hydraulic block, part number 0020118181, for Glow-worm Betacom, Easicom and Ultimate gas boilers.
At a glance
- Also known as 1340584
£16.08
£13.40 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 Glow-worm hydraulic block, part number 0020118181, is a diverter valve assembly used in Glow-worm gas boilers. It controls the flow of water between the central heating circuit and the domestic hot water circuit, allowing the boiler to switch between the two on demand. It is fitted across a number of Betacom, Easicom and Ultimate models.
Signs this part needs replacing
- No hot water while the heating is running, or radiators warming when only hot water is drawn
- The boiler fails to switch cleanly between central heating and hot water modes
- Water weeping or dripping from around the block or its connections
- Sluggish or stuck movement inside the block, often after scale or debris build-up
- Hot water flow reduced, or tap temperature fluctuating
Before you order
- Check the model and GC number on the boiler data badge against the list above
- Confirm the part number on the existing component matches 0020118181
- If your appliance is not listed, check the manufacturer's parts list for your exact model
Compliance
| Alternative numbers | 1340584 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| GLOWWORM BETACOM 2 24 | 47-019-16 | 47-019-16 | — | — |
| GLOWWORM BETACOM 2 28 | 47-019-17 | 47-019-17 | — | — |
| GLOWWORM BETACOM 24 A | 47-019-13 | 47-019-13 | — | — |
| GLOWWORM BETACOM 28 A | 47-019-14 | 47-019-14 | — | — |
| GLOWWORM EASICOM 24 | 47-019-18 | 47-019-18 | — | — |
| GLOWWORM EASICOM 28 | 47-019-19 | 47-019-19 | — | — |
| GLOWWORM GLOWWORM BETACOM 2 24 | — | — | — | |
| GLOWWORM GLOWWORM BETACOM 2 28 | — | — | — | |
| GLOWWORM GLOWWORM BETACOM 24 A | — | — | — | |
| GLOWWORM GLOWWORM BETACOM 28 A | — | — | — |
Showing 10 of 12 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.
GLOWWORM appliance manual — BETACOM 2 24 (GC 47-019-16)
manualmanualGLOWWORM appliance manual — BETACOM 2 28 (GC 47-019-17)
manualmanualGLOWWORM appliance manual — BETACOM 24 A (GC 47-019-13), BETACOM 28 A (GC 47-019-14)
manualmanualGLOWWORM appliance manual — EASICOM 24 (GC 47-019-18)
manualmanualGLOWWORM appliance manual — EASICOM 28 (GC 47-019-19)
manualmanualGLOWWORM appliance manual — ULTIMATE 30C (GC 47-044-48), ULTIMATE 35C (GC 47-044-49)
manualNo technical questions yet for this part.
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