
Filling Key With Check Valve Ferroli DIVAtop LOW NOx F24 Ref. 39808980
The filling key with check valve Ferroli DIVAtop LOW NOx F24 is a safety valve that regulates the pressure in the boiler circuit. Its function is to release water when the pressure exceeds a certain limit, usually 3 bar. If this part fails, you will notice continuous dripping or that it does not discharge when it should. It is installed in several models of the DIVAtop LOW NOx range, as well as in other models of the DIVAtop series and in some boilers from the Domina Oasi and Econcept ranges, among others. A technician must confirm through diagnosis whether it needs to be replaced when it shows persistent dripping or does not operate correctly.
- Type of part
- Filling valves
- Status
- Refurbished
- Catalogue reference
- 39808980
- Warranty
- 1 year
Ferroli boilers compatible with reference 39808980
Filling key with reference 39808980. 29 verified compatibilities: Divatop 60 F24 and Divatop 60 F32.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Ferroli Divatop 60 F24 | Divatop | Contrasted |
| Ferroli Divatop 60 F32 | Divatop | Contrasted |
| Ferroli Divatop C24 | Divatop | Contrasted |
| Ferroli Divatop C32 | Divatop | Contrasted |
| Ferroli Divatop F24 | Divatop | Contrasted |
| Ferroli Divatop F32 | Divatop | Contrasted |
| Ferroli Divatop F37 | Divatop | Contrasted |
| Ferroli Divatop Low NOx F24 | Divatop Low NOx | Contrasted |
| Ferroli Divatop Low NOx F32 | Divatop Low NOx | Contrasted |
| Ferroli Divatech micro LN F24 D | Divatop micro / Divatmic LN | Contrasted |
| Ferroli Divatech micro LN F32 D | Divatop micro / Divatmic LN | Contrasted |
| Ferroli Divatop micro F37 | Divatop micro / Divatmic LN | Contrasted |
| Ferroli Divatop micro LN | Divatop micro / Divatmic LN | Contrasted |
| Ferroli Domina Oasi C24E | Domina Oasi | Contrasted |
| Ferroli Domina Oasi C30E | Domina Oasi | Contrasted |
| Ferroli Domina Oasi F24E | Domina Oasi | Contrasted |
| Ferroli Domina Oasi F30E | Domina Oasi | Contrasted |
| Ferroli Econcept 25 C | Econcept | Contrasted |
| Ferroli Econcept 35 C | Econcept | Contrasted |
| Ferroli Econcept Tech 25A | Econcept | Contrasted |
| Ferroli Econcept Tech 25C | Econcept | Contrasted |
| Ferroli Econcept Tech 35A | Econcept | Contrasted |
| Ferroli Econcept Top 25A | Econcept | Contrasted |
| Ferroli Econcept Top 35A | Econcept | Contrasted |
| Ferroli Atlas 30 K 100 Unit | Atlas | Contrasted |
| Ferroli Atlas 30 SI Unit | Atlas | Contrasted |
| Ferroli Atlas D 30 SI Unit | Atlas | Contrasted |
| Ferroli Atlas D 30 K 100 Unit | Atlas | Contrasted |
| Ferroli Atlas D 42 K 130 Unit | Atlas | Contrasted |
Can't see your model or have questions? The printed reference takes precedence. How to check it · Send us a photo via WhatsApp.
How to check if ref. 39808980 is the part for your boiler
The part reference, model, and equipment revision must be verified against the manufacturer's documentation.
- Find the reference printed on the installed part and check whether it matches the catalogue reference 39808980. If it is not visible, do not identify the part from its shape alone.
- Check the full boiler model on its data plate and look for it in the model associations on this page.
- Compare the connections and physical body with the original part before installation.
- If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.
Symptoms that require diagnosis in the filling valve 39808980
The filling valve allows water to refill the heating circuit. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
Water leaks appear right in the area of the filling valve.
Cause: The body or the gasket of the valve has lost tightness over time.
Dry the area well and check again after a few hours to confirm that the water is coming from the tap and not from a nearby thread.
- 02
The boiler does not maintain the circuit pressure and needs to be constantly refilled.
Cause: The internal check valve does not close completely and allows water to leak slowly into the network.
Monitor the pressure gauge when cold and hot for a day; if the drop is slow and continuous, suspect this part before checking the expansion vessel.
- 03
The heating circuit cannot be filled or charged when the valve is opened.
Cause: The mechanism is blocked by scale or dirt and does not allow water to pass through.
Check that the 3/8" connections are properly threaded and that there is no trapped air before replacing the valve.
These symptoms can have more than one cause. If your boiler displays a fault code, send it to us via WhatsApp along with a photo of the labeling, and we'll tell you if this is the part.
Technical sheet: Ferroli 39808980 filling key
- Catalogue reference
- 39808980
- Uniclima internal SKU
- LLNOXF24
- Brand
- Ferroli
- Type of part
- Filling valves
- Units in stock
- 3 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Part data and available documentation
Contrast the label codes, PCB, and revision with the installed part; they are not necessarily equivalent references.
- type
- Filling valve/tap with built-in check valve
- connection
- 3/8" male on both ends
- previous code (ex)
- 36901470







