Glow-worm
Glow-worm Gas Valve Assembly 800442
Gas valve assembly with SIT Tandem 0.830.020 valve for compatible Glow-worm and Saunier Duval boilers from serial number 0011846.
At a glance
- Also known as 1332849
£176.57
£147.14 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 800442 is a gas valve assembly fitted with a SIT Tandem 0.830.020 valve. It regulates the supply of gas to the burner in compatible Glow-worm and Saunier Duval boilers. This version is suitable for appliances from serial number 0011846 onwards.
Signs this part needs replacing
- Boiler fails to ignite or produces no burner flame.
- Repeated lockouts or ignition faults.
- Flame extinguishes shortly after ignition.
- Gas valve does not open or close correctly.
- No gas supply reaches the burner.
Before you order
- Check the appliance model and GC number against the fitment list.
- Confirm the boiler serial number is 0011846 or later.
- Check the existing gas valve code and valve type before ordering.
- Ensure the part is suitable for the boiler type and gas configuration.
Compliance
| GC number | 278-021 |
|---|---|
| Barcode / EAN | 5037985027697 |
| Alternative numbers | 1332849 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| GLOWWORM FUELSAVER 100F | 41-313-32 | 41-313-32 | — | — |
| GLOWWORM GLOWWORM K F B 20 | — | — | — | |
| GLOWWORM GLOWWORM K F B 30 | — | — | — | |
| GLOWWORM GLOWWORM K F B 40 | — | — | — | |
| GLOWWORM GLOWWORM K F B 50 | — | — | — | |
| GLOWWORM GLOWWORM K F B 60 | — | — | — | |
| GLOWWORM GLOWWORM MICRON 100FF | — | — | — | |
| GLOWWORM GLOWWORM MICRON 120FF | — | — | — | |
| GLOWWORM GLOWWORM SPACESAVER COMPLHEAT 30 | — | — | — | |
| GLOWWORM GLOWWORM SPACESAVER COMPLHEAT 40 | — | — | — |
Showing 10 of 40 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 — K F B 30 (GC 41-319-08), K F B 40 (GC 41-319-09), K F B 50 (GC 41-319-10), SPACE SAVER KFB 30 (GC 41-319-08), SPACE SAVER KFB 40 (GC 41-319-09), SPACE SAVER KFB 50 (GC 41-319-10)
manualmanualGLOWWORM appliance manual — K F B 60 (GC 41-319-11), SPACE SAVER KFB 60 (GC 41-319-11), SPACE SAVER KFB 70 (GC 41-319-12)
manualmanualGLOWWORM appliance manual — MICRON 100FF (GC 41-047-22)
manualmanualGLOWWORM appliance manual — MICRON 120FF (GC 41-047-23)
manualmanualGLOWWORM appliance manual — SPACE SAVER COMPLHEAT 30 (GC 41-319-42), SPACE SAVER COMPLHEAT 40 (GC 41-319-43), SPACE SAVER COMPLHEAT 50 (GC 41-319-44)
manualmanualGLOWWORM appliance manual — SPACE SAVER COMPLHEAT 60 (GC 41-319-45), SPACE SAVER COMPLHEAT 70 (GC 41-319-46)
manualmanualGLOWWORM appliance manual — ULTIMATE 100FF (GC 41-319-61)
manualmanualGLOWWORM appliance manual — ULTIMATE 120FF (GC 41-319-75)
manualmanualGLOWWORM appliance manual — ULTIMATE 70FF (GC 41-319-86)
manualmanualGLOWWORM appliance manual — ULTIMATE 80FF (GC 41-319-60)
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