
Filling Key Junkers Cerapur Comfort Zwbc Ref. 87160130920
If you notice that you cannot refill water into the heating circuit or that the valve is continuously leaking water, it is time to replace the Junkers Cerapur Comfort Zwbc filling valve. This part helps maintain the proper pressure in the heating system by allowing water to enter. It is installed in several boiler models, such as the CerapurComfort ZWBC 24-2 C 23, ZWBC 25-2 C 31, and ZWBC 30-2 C 31, among others. Replacement is necessary when it shows leaks or does not close properly.
VAT included
Consult via WhatsAppJunkers boilers compatible with reference 87160130920
Filling key with reference 87160130920. 12 verified compatibilities: CerapurComfort ZWBC 24-2 C 23 and CerapurComfort ZWBC 24-2 C 31.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Junkers CerapurComfort ZWBC 24-2 C 23 | Junkers | Contrasted |
| Junkers CerapurComfort ZWBC 24-2 C 31 | Junkers | Contrasted |
| Junkers CerapurComfort ZWBC 25-2 C 23 S3700 | Junkers | Contrasted |
| Junkers CerapurComfort ZWBC 25-2 C 31 S3700 | Junkers | Contrasted |
| Junkers CerapurComfort ZWBC 28-2 C 23 | Junkers | Contrasted |
| Junkers CerapurComfort ZWBC 28-2 C 31 | Junkers | Contrasted |
| Junkers CerapurComfort ZWBC 30-2 C 23 S3700 | Junkers | Contrasted |
| Junkers CerapurComfort ZWBC 30-2 C 31 S3700 | Junkers | Contrasted |
| Junkers CerastarComfort ZWN 25-8 MFA 23 S2800 | Junkers | Contrasted |
| Junkers CerastarComfort ZWN 25-8 MFA 31 S2800 | Junkers | Contrasted |
| Junkers CerastarComfort ZWN 30-8 MFA 23 S2800 | Junkers | Contrasted |
| Junkers CerastarComfort ZWN 30-8 MFA 31 S2800 | Junkers | 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 the ref. 87160130920 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 87160130920. 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 87160130920 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
You have to refill the boiler pressure more often than usual.
Cause: The internal seat of the valve does not close properly and allows a continuous trickle of water to pass through.
Close the valve completely, dry the area well, and check after a while if the moisture reappears on the body of the valve and not at another point in the circuit.
- 02
A water ring or dripping appears around the tap when using it to fill.
Cause: The gasket that seals the stem or the hose fitting wears out with use.
Check that the filling hose and its gasket are properly installed and in good condition before replacing the complete valve.
- 03
The knob is stiff, it has jammed or it has broken while trying to turn the tap.
Cause: Limescale and water residues from the installation block the internal mechanism, especially if the tap has not been used for a long time.
Gently turn the knob without forcing it, and apply a few drops of degreaser at the joint before considering the valve as blocked.
- 04
When opening the tap, no water comes out or only a very small amount, even though the mains pressure is correct.
Cause: The internal duct may be blocked by scale or by a displaced gasket that obstructs the flow.
First, check that the main water supply valve to the boiler is open and that there is network pressure before considering the filling valve as blocked.
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 valve Junkers 87160130920
- Catalogue reference
- 87160130920
- Brand
- Junkers
- Type of part
- Filling valves
- Units in stock
- 1 unit
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Junkers CerapurComfort ZWBC 25-2 C 23 S3700 manual (PDF)Document © Junkers, provided as a technical reference.







