Filling Key (Brass Body) For ZWE24-2KDP23 Ref. 8717405140
The filling valve allows water to be replenished in the heating circuit to recover pressure. If it fails, you will not be able to refill the circuit or you will notice that it is continuously leaking water, which can cause an increase in pressure. This part, made of brass and with reference 8717405140, is compatible with Junkers boilers from the ZWR ranges (such as ZWR 18-3 KE and ZWR 24-3 KDE) and ZWE (such as ZWE 24-2 AE and ZWE 28-3 MFA), among others. It is recommended to replace it when it shows leaks or does not function properly.
VAT included
Consult via WhatsAppJunkers boilers compatible with reference 8717405140
Filling key with reference 8717405140. Nine confirmed compatibilities: ZWR 18-3 KE and ZWR 18-3 KDE.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Junkers ZWR 18-3 KE | Junkers ZWR (18/24) | Contrasted |
| Junkers ZWR 18-3 KDE | Junkers ZWR (18/24) | Contrasted |
| Junkers ZWR 24-3 KE | Junkers ZWR (18/24) | Contrasted |
| Junkers ZWR 24-3 KDE | Junkers ZWR (18/24) | Contrasted |
| Junkers ZWE 24-2 AE | Junkers ZWE (24/28) | Contrasted |
| Junkers ZWE 24-3 MFA | Junkers ZWE (24/28) | Contrasted |
| Junkers ZWE 24-3 MFK | Junkers ZWE (24/28) | Contrasted |
| Junkers ZWE 28-2 AE | Junkers ZWE (24/28) | Contrasted |
| Junkers ZWE 28-3 MFA | Junkers ZWE (24/28) | 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. 8717405140 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 8717405140. 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 8717405140 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 boiler frequently loses pressure and the circuit needs to be refilled every few days.
Cause: The internal mechanism of the valve does not seal when closed and allows water to leak slowly.
Check for moisture or limescale around the valve before assuming that the leak is coming from another location.
- 02
Water is leaking from the body or the control even when it's closed.
Cause: The brass seat is worn out or has limescale buildup and no longer closes completely.
Carefully tighten the connection fitting; if the leak comes from the body itself and not from the thread, the valve is the cause.
- 03
It's difficult to turn the knob to open or close the water flow.
Cause: Lime scale has accumulated in the internal mechanism after a long time without operating the valve.
Try moving it gently several times; if it gets stuck or doesn't close completely, replace 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.
Data sheet for the filling valve Junkers 8717405140
- Catalogue reference
- 8717405140
- Brand
- Junkers
- Type of part
- Filling valves
- Units in stock
- 4 units
- 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.
- Body material
- Brass
Frequently asked questions about the filling valve 8717405140
What material is the body of the filling valve of the ZWE24-2KDP23 made of?
Is this filling key suitable for the ZWR18-3KDE23 boiler?
Spare parts related to Junkers Junkers ZWE (24/28)
