Filling Key for Exclusive / Kompakt 24 CSI - Ref. R10026857

Beretta boilers compatible with reference R10026857

Filling key with reference R10026857. 18 confirmed compatibilities: 24 CAI and 28 CAI.

Proven compatibility

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. R10026857 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.

1. Find the reference printed on the installed part and check whether it matches the catalogue reference R10026857. If it is not visible, do not identify the part from its shape alone.
2. Check the full boiler model on its data plate and look for it in the model associations on this page.
3. Compare the connections and physical body with the original part before installation.
4. If anything is unclear, send us a photo of the marking via WhatsApp before placing your order.

Symptoms and faults that the filling valve R10026857 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

  No matter how much you open the filling valve, the pressure in the circuit does not rise.

  Cause: The internal mechanism of the valve is seized or obstructed and does not allow water to pass through even when operated.

  Check that the key turns normally and that the filling hose or fitting is not bent or blocked.

• 02

  The pressure in the circuit rises on its own over the days, without anyone touching the boiler.

  Cause: The internal check valve of the tap does not close properly and allows mains water to continuously flow into the circuit.

  Close the valve tightly and check the pressure gauge to see if the pressure continues to rise after a few hours.

• 03

  Water is leaking from the filling valve itself even though it appears to be closed.

  Cause: The seat or the sealing gasket of the valve is worn out and does not seal completely when closed.

  Make sure the valve is completely closed (sometimes it gets stuck halfway) before considering it faulty.

• 04

  It's difficult to turn the key or the handle feels stiff and seized up.

  Cause: The internal mechanism seizes up due to lime or corrosion, especially if the valve hasn't been used for a while.

  Apply controlled force to release it; if the body is broken or does not yield, confirm the replacement of the part.

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.

Data sheet for the filling key Beretta R10026857

Catalogue reference

R10026857

Brand

Beretta

Type of part

Filling valves

Units in stock

3 units

Status

Refurbished

Warranty

1 year

Shipping

1-2 business days

Return

14 days