Filling Key Ref. BI1181501 - Biasi Inovia, Rinnova Cond, Riva Compact
The filling valve of Biasi Inovia, Rinnova Cond, and Riva Compact boilers allows water to be replenished in the heating circuit to maintain the proper pressure. When this part fails, the user may notice that the circuit cannot be filled or that it continuously loses water, which can lead to an increase in pressure. It is compatible with models such as INOVIA 25C, INOVIA 30C, INOVIA 35C, RINNOVA COND 25S, RINNOVA COND 35S, and RIVA COMPACT M96.24SM/C2, among others. It should be replaced when it shows leaks or does not allow the circuit to be filled.
VAT included
Consult via WhatsAppBiasi boilers compatible with reference BI1181501
Filling key with reference BI1181501. Six confirmed compatibilities: INOVIA 25C and INOVIA 30C.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Biasi INOVIA 25C | Biasi | Contrasted |
| Biasi INOVIA 30C | Biasi | Contrasted |
| Biasi INOVIA 35C | Biasi | Contrasted |
| Biasi RINNOVA COND 25S | Biasi | Contrasted |
| Biasi RINNOVA COND 35S | Biasi | Contrasted |
| Biasi RIVA COMPACT M96.24SM/C2 | Biasi | 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. BI1181501 is the part for your boiler
What determines it is not the boiler model, but the reference printed on the part you already have installed.
- Find the reference printed on the installed part and check whether it matches the catalogue reference BI1181501. 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 and faults that the filling valve BI1181501 resolves.
The filling valve allows water to refill the heating circuit. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The pressure in the circuit does not increase when opening the black plastic valve.
Cause: The internal mechanism is stuck or the shutter does not allow the flow of mains water.
Check that the main valve of the house is open and that there is network pressure reaching the boiler.
- 02
The pressure gradually increases even though the valve is closed.
Cause: The internal seal is not working properly and allows a small continuous flow into the circuit.
Shut off the main water supply valve and check if the pressure gauge stops rising after a couple of hours.
- 03
There is noticeable dripping or moisture at the base of the plastic valve.
Cause: The internal gasket has deteriorated over time, and water is leaking through the body.
Dry the area and see if the dripping reappears with the boiler running before replacing the part.
- 04
It's difficult to turn the key or it has become stuck.
Cause: Lime and water residues block the mechanism over the years, especially since it is made of plastic.
Try to move it carefully without forcing the lever and check for visible limescale before replacing it.
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.
Fiche of the filling key Biasi BI1181501
- Catalogue reference
- BI1181501
- Brand
- Biasi
- Type of part
- Filling valves
- Units in stock
- 1 unit
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- Return
- 14 days
Data read on the part and in the manufacturer's documentation
What we have not been able to verify does not appear here.
- Material
- Smooth black plastic
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Manaut INOVIA 35C manual (PDF)Document © Biasi, provided as a technical reference.
Frequently asked questions about the filling key BI1181501
Is the key Ref. BI1181501 suitable for the Biasi Inovia 30C boiler?
Is the reference BI1181501 suitable for the Biasi Inovia 35C?
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