Ferroli
Ferroli Expansion Vessel 10 Litre 39809690
10 litre expansion vessel for compatible Ferroli gas boilers, part number 39809690.
At a glance
- Also known as 1210689, N3951
- If unsure, consult a Gas Safe registered engineer before ordering.
Showing prices
£155.89
£129.91 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 Ferroli 39809690 is a 10 litre expansion vessel for compatible Ferroli gas boilers. It manages pressure changes in the heating system as water expands and contracts. The part is listed for use across a range of Ferroli boiler models, including the Domicompact F30B.
Signs this part needs replacing
- Boiler pressure rises sharply when the heating is running.
- Pressure relief valve discharges water during heating cycles.
- System pressure drops repeatedly and needs frequent topping up.
- The expansion vessel is waterlogged or has lost its air charge.
- Corrosion or water is visible at the vessel connection.
Before you order
- Check your boiler model and GC number against the Fits list.
- Confirm the existing expansion vessel is 10 litre.
- Check the part number 39809690 or replaced code 805740 against the manufacturer's parts list.
- If unsure, consult a Gas Safe registered engineer before ordering.
Compliance
| GC number | E39-474 |
|---|---|
| Barcode / EAN | 8028693478458 |
| Alternative numbers | FER39809690, 1210689, N3951 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| FERROLI DIVATOP C32 - 30K0316000 (07/09/2006) | — | — | — | |
| FERROLI DIVATOP F32 - 30K0340000 (09/11/2006) | — | — | — | |
| FERROLI DIVATOP HF32 - 30K0436000 (10/07/2007) | — | — | — | |
| FERROLI DIVATOP LOW NOX C32 - 30K0417000 (04/07/2007) | — | — | — | |
| FERROLI DIVATOP LOW NOX C32 - 30K0421000 (05/07/2007) | — | — | — | |
| FERROLI DOMICOMPACT C30 D - 30K0126000 (01/08/2004) | — | — | — | |
| FERROLI DOMICOMPACT C30 D - 30K0126002 (01/04/2006) | — | — | — | |
| FERROLI DOMICOMPACT C30 E - 30K0124000 (08/03/2004) | — | — | — | |
| FERROLI DOMICOMPACT C30 E - 30K0124000 (18/06/2004) | — | — | — | |
| FERROLI DOMICOMPACT C30 E - 30K0124002 (01/04/2006) | — | — | — |
Showing 10 of 75 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
FERROLI appliance manual — DOMICOMPACT F30 B - 30K0238000 (06/04/2005) (GC 47-267-38), DOMICOMPACT F30 B - 30K0238001 (01/09/2006) (GC 47-267-38), DOMICOMPACT F30 B - 30K0238002 (11/01/2007) (GC 47-267-38), DOMICOMPACT F30 B LPG A2) - 30K0281000 (25/01/2006), DOMICOMPACT F30 B NG A2) - 30K0281000 (25/01/2006)
manualmanualFERROLI appliance manual — DOMICOMPACT F30 D - 30K0128000 (01/08/2004) (GC 47-267-40), DOMICOMPACT F30 D - 30K0296000 (27/06/2006) (GC 47-267-40)
manualmanualFERROLI appliance manual — F30B - 30K0236000 (05/04/2005) (GC 47-267-36)
manualmanualFERROLI appliance manual — F30E - 30R0548/1 (01/03/2002) (GC 47-267-32)
manualmanualFERROLI appliance manual — FALCON II - 30R0374/0 (01/05/2001) (GC 47-267-24), FALCON II - 30R0374/0 (01/10/2000) (GC 47-267-24)
manualmanualFERROLI appliance manual — FERELLA GOLD F30 NG - 30K0210000 (28/10/2004)
manualmanualFERROLI appliance manual — FERTECH 38C - 30K0849000 (GC 47-267-52)
manualmanualFERROLI appliance manual — MAXIMA 35C - 30K00780 (01/10/2003) (GC 47-267-33)
manualmanualFERROLI appliance manual — MAXIMA 35S - 30K0088000 (01/07/2004) (GC 47-267-21)
manualmanualFERROLI appliance manual — MODENA 102/1 - 30R0545/0 (01/05/2001) (GC 47-267-24), MODENA 102E MF03 - 30R0340/0 (01/10/1999) (GC 47-264-24)
manualmanualFERROLI appliance manual — MODENA 102E MF03.1 - 30R0545/0 (01/05/2001) (GC 47-264-24)
manualmanualFERROLI appliance manual — NEW ELITE F24 - 30K0308000 (25/07/2006)
manualmanualFERROLI appliance manual — NEW ELITE F30 - 30K0309001 (19/03/2007)
manualmanualFERROLI appliance manual — OPTIMAX HE 38C MKII - 30K0415000 (03/07/2007) (GC 47-267-45)
manualmanualFERROLI appliance manual — OPTIMAX HE PLUS 35S - 30K0676000 (13/10/2008) (GC 41-267-33)
manualmanualFERROLI appliance manual — OPTIMAX HE PLUS 38C - 30K0415001 (01/01/2008) (GC 47-267-45), OPTIMAX HE PLUS 38C - 30K0415002 (01/12/2008) (GC 47-267-45)
manualmanualFERROLI appliance manual — TEMPRA 30 (GC 41-267-16)
manualNo technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.