Filling Key (Brass Body) For ZWE24-2KDP23 Ref. 8717405140

Junkers boilers compatible with reference 8717405140

Filling key with reference 8717405140. Nine confirmed compatibilities: ZWR 18-3 KE and ZWR 18-3 KDE.

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. 8717405140 is the part for your boiler

The part reference, model, and equipment revision must be verified against the manufacturer's documentation.

1. 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.
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 that require diagnosis in the filling valve 8717405140

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.

  This symptom may be related to the part, but it does not confirm that it is faulty. A technician must check the equipment and its inspection according to the manual before deciding on a repair or replacement.

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

Uniclima internal SKU

LLBZWE2423

Brand

Junkers

Type of part

Filling valves

Units in stock

6 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.

Body material

Brass