Riello
Riello Diffuser Disc 20139837
Diffuser disc for Riello RDB2.2 BX burners, used in Grant, Warmflow and Mistral appliances.
At a glance
- Also known as 3206679
Showing prices
£51.47
£42.89 ex. VAT · VAT at 20%
Available to order · 3 working days
Available to order · 3 working days
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 Riello Diffuser Disc is a component for Riello RDB2.2 BX oil burners. It is fitted within the burner assembly and contributes to the combustion process. This part is identified by Riello part number 20139837.
Signs this part needs replacing
- Soot deposits or carbon build-up on the diffuser disc
- Poor flame quality or unstable flame
- Increased fuel consumption or inefficient combustion
- Burner lockouts or ignition problems
- Visible damage, corrosion, or deformation of the disc
Before you order
- Confirm your burner model is a Riello RDB2.2 BX series
- Check the existing diffuser disc for the part number 20139837
- Verify compatibility with your appliance model from the Fits list
- Inspect the old part for wear or damage to ensure replacement is necessary
Compliance
| Alternative numbers | 3206679 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| RIELLO BURNER SPARES | — | — | — | |
| RIELLO RDB2.2 BX 15-20 MISTRAL - CODE 20153493 | — | — | — | |
| RIELLO RDB2.2 BX 15-21 WARMFLOW - CODE 20112459 | — | — | — | |
| RIELLO RDB2.2 BX 20-26 MISTRAL - CODE 20153619 | — | — | — | |
| RIELLO RDB2.2 BX E15/21 GRANT - CODE 20147321 | — | — | — | |
| RIELLO RDB2.2 BX E21/26 GRANT - CODE 20147346 | — | — | — | |
| RIELLO RDB2.2 BX VC26 GRANT - CODE 20147322 | — | — | — | |
| RIELLO RDB2.2 BX VORTEX 15-26 GRANT - CODE 20094977 | — | — | — |
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
RIELLO appliance manual — RDB2.2 BX 15-20 MISTRAL - CODE 20153493
manualmanualRIELLO appliance manual — RDB2.2 BX 15-21 WARMFLOW - CODE 20112459
manualmanualRIELLO appliance manual — RDB2.2 BX 20-26 MISTRAL - CODE 20153619
manualmanualRIELLO appliance manual — RDB2.2 BX E15/21 GRANT - CODE 20147321
manualmanualRIELLO appliance manual — RDB2.2 BX E21/26 GRANT - CODE 20147346
manualmanualRIELLO appliance manual — RDB2.2 BX VC26 GRANT - CODE 20147322
manualmanualRIELLO appliance manual — RDB2.2 BX VORTEX 15-26 GRANT - CODE 20094977
manualNo technical questions yet for this part.
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Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.