Riello
Riello Diffuser Disc 3003898
Diffuser disc for Riello RL 28/1 burners, part number 3003898.
At a glance
- Part type: diffuser disc
£41.57
£34.64 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 diffuser disc is a Riello burner component that sits in the combustion head assembly and shapes the air pattern around the fuel spray. It is listed by Riello under burner spares for the RL 28/1 range. Its role is to promote stable, complete combustion at the burner head.
Signs this part needs replacing
- Soot deposits building up on the disc or combustion head
- Unstable or pulsating flame at the burner head
- Visible cracking, distortion or erosion of the disc surface
- Repeated burner lockouts or poor combustion readings
- Carbon build-up that cannot be cleared by routine cleaning
Before you order
- Confirm the burner model is RL 28/1
- Check the burner code and type against the fitment list above
- Inspect the existing disc for the part number and compare it with 3003898
- Confirm the appliance uses a Riello burner before ordering
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| RIELLO BURNER SPARES | — | — | — | |
| RIELLO RL 28/1 - CODE 3472015 - TYPE 657-T1 | — | — | — | |
| RIELLO RL 28/1 - CODE 3472016 - TYPE 657-T1 | — | — | — |
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 technical questions yet for this part.
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