Glow-worm
Glow-worm Sight Glass S411194
Replacement sight glass for combustion chamber inspection on a range of Glow-worm gas boilers, part number S411194.
At a glance
- Also known as 1335186
Showing prices
£0.01
£0.01 ex. VAT · VAT at 20%
In stock
Cut-off passed — dispatches next working day
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
The Glow-worm S411194 sight glass is a viewing window fitted to the combustion chamber of Glow-worm gas boilers, allowing the flame and combustion condition to be checked without removing the casing. It is supplied under part number S411194 and is listed as fitting 119 Glow-worm appliances, covering back boiler units, Capricorn, Economy and Fuelsaver models.
Signs this part needs replacing
- The glass is cracked, chipped or crazed
- The view through the glass is obscured by sooting or staining that will not clean off
- The glass has clouded or discoloured, making flame observation difficult
- Staining or leakage is visible around the glass and its seating
Before you order
- Check the boiler model against the fit list before ordering
- Inspect the existing sight glass and its seating for cracks, sooting or leakage
- Have the appliance GC number to hand to confirm the model variant
Compliance
| GC number | 355-153 |
|---|---|
| Barcode / EAN | 5037985043413 |
| Alternative numbers | 1335186 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| GLOWWORM 240/6 BACK BOILER UNIT | 44-315-26 | 44-315-26 | — | — |
| GLOWWORM 246 BACK BOILER UNIT | 44-315-25 | 44-315-25 | — | — |
| GLOWWORM CAPRICORN 240 | 44-315-18 | 44-315-18 | — | — |
| GLOWWORM CAPRICORN 246 | 44-315-17 | 44-315-17 | — | — |
| GLOWWORM ECONOMY 24 & ECONOMY 24BF PLUS | 41-313-90 | 41-313-90 | — | — |
| GLOWWORM ECONOMY 30 & ECONOMY 30BF PLUS | 41-319-01 | 41-319-01 | — | — |
| GLOWWORM ECONOMY 30F | 41-319-05 | 41-319-05 | — | — |
| GLOWWORM ECONOMY 40 & ECONOMY 40BF PLUS | 41-319-02 | 41-319-02 | — | — |
| GLOWWORM ECONOMY 40F | 41-319-06 | 41-319-06 | — | — |
| GLOWWORM ECONOMY 50 & ECONOMY 50BF PLUS | 41-319-03 | 41-319-03 | — | — |
Showing 10 of 121 compatible appliances.
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 — ECONOMY 30 & ECONOMY 30BF PLUS (GC 41-319-01)
manualmanualGLOWWORM appliance manual — ECONOMY 30F (GC 41-319-05)
manualmanualGLOWWORM appliance manual — ECONOMY 40 & ECONOMY 40BF PLUS (GC 41-319-02)
manualmanualGLOWWORM appliance manual — ECONOMY 40F (GC 41-319-06)
manualmanualGLOWWORM appliance manual — ECONOMY 50 & ECONOMY 50BF PLUS (GC 41-319-03)
manualmanualGLOWWORM appliance manual — ECONOMY 50F (GC 41-319-07)
manualmanualGLOWWORM appliance manual — FUELSAVER 30 R MKII & ECONOMY PLUS 30C (GC 41-313-77)
manualmanualGLOWWORM appliance manual — FUELSAVER 35F (GC 41-313-09), FUELSAVER 45F (GC 41-313-35), FUELSAVER 55F (GC 41-313-06)
manualmanualGLOWWORM appliance manual — FUELSAVER 40 R MKII & ECONOMY PLUS 40C (GC 41-313-78)
manualmanualGLOWWORM appliance manual — FUELSAVER 50R MKII & ECONOMY PLUS 50 C (GC 41-313-79)
manualmanualGLOWWORM appliance manual — FUELSAVER 60 BF MKII (GC 41-313-10), FUELSAVER 75 BF MKII (GC 41-313-11)
manualmanualGLOWWORM appliance manual — FUELSAVER COMBI FF (GC 47-313-02)
manualmanualGLOWWORM appliance manual — FUELSAVER UFB 30B (GC 41-319-32), FUELSAVER UFB 40B (GC 41-319-33), FUELSAVER UFB 50B (GC 41-319-34)
manualmanualGLOWWORM appliance manual — FUELSAVER UFB 60B (GC 41-319-35), FUELSAVER UFB 75B (GC 41-319-36)
manualmanualGLOWWORM appliance manual — MICRON 100FF (GC 41-047-22)
manualmanualGLOWWORM appliance manual — MICRON 120FF (GC 41-047-23)
manualmanualGLOWWORM appliance manual — SPACE SAVER 20-30F (GC 41-313-71), SPACE SAVER 30-40F (GC 41-313-68), SPACE SAVER 40-50F (GC 41-313-70), SPACE SAVER 50-60F (GC 41-313-69)
manualmanualGLOWWORM appliance manual — SPACE SAVER 30 BF MKII (GC 41-314-94)
manualmanualGLOWWORM appliance manual — SPACE SAVER 50 CF MKII (GC 41-313-03)
manualmanualGLOWWORM appliance manual — SPACE SAVER 60 BF MKII (GC 41-313-02)
manualmanualGLOWWORM appliance manual — SPACE SAVER 65-75F (GC 41-313-38)
manualmanualGLOWWORM appliance manual — ULTIMATE 100FF (GC 41-319-61)
manualmanualGLOWWORM appliance manual — ULTIMATE 120FF (GC 41-319-75)
manualmanualGLOWWORM appliance manual — ULTIMATE 30BF (GC 41-319-51)
manualmanualGLOWWORM appliance manual — ULTIMATE 30FF (GC 41-319-56)
manualmanualGLOWWORM appliance manual — ULTIMATE 40BF (GC 41-319-52)
manualmanualGLOWWORM appliance manual — ULTIMATE 40CF (GC 41-319-48)
manualmanualGLOWWORM appliance manual — ULTIMATE 40FF (GC 41-319-57)
manualmanualGLOWWORM appliance manual — ULTIMATE 50BF (GC 41-319-53)
manualmanualGLOWWORM appliance manual — ULTIMATE 50CF (GC 41-319-49)
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