Glow-worm
Glow-worm Automatic Air Vent 0010033805
Automatic air vent, part 0010033805, for Glow-worm Compact and Micracom gas boilers.
At a glance
- Part type: automatic air vent
- Also known as 1388930
£19.63
£16.36 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 0010033805 is an automatic air vent used on Glow-worm Compact and Micracom gas boilers. It continuously releases trapped air from the boiler's water circuit, helping to prevent airlocks, noise and circulation problems. The vent opens automatically as air collects, so the system does not need manual bleeding at this point.
Signs this part needs replacing
- Water weeping or dripping from the vent body
- Boiler pressure dropping repeatedly with no visible leak elsewhere
- Gurgling, hissing or air noise from the boiler during operation
- Radiators or boiler requiring frequent manual bleeding
- Corrosion or scale build-up around the vent
Before you order
- Confirm your boiler model against the fit list above
- Check the existing part number on the vent matches 0010033805
- Isolate the appliance and allow the system to cool and depressurise before removal
- Check the vent seating and connection for damage before fitting the new part
Compliance
| Alternative numbers | 1388930 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| GLOWWORM COMPACT 24C | — | — | — | |
| GLOWWORM COMPACT 24C P | — | — | — | |
| GLOWWORM COMPACT 28C | — | — | — | |
| GLOWWORM COMPACT 28C P | — | — | — | |
| GLOWWORM MICRACOM 24C | 47-019-58 | 47-019-58 | — | — |
| GLOWWORM MICRACOM 28C | 47-019-59 | 47-019-59 | — | — |
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 documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No technical questions yet for this part.
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