Filling Key Vaillant Turbotec Plus VMW ES 21 245 4 5 R3 Ref. 0020018065
RefurbishedVaillantFilling valves

Filling Key Vaillant Turbotec Plus VMW ES 21 245 4 5 R3 Ref. 0020018065

Stock · 6 units

The filling valve Vaillant Turbotec Plus VMW ES 21 245 4 5 R3 allows you to replenish water in the heating circuit, which is essential for maintaining the proper pressure. If this part fails, you will notice that you cannot refill the circuit or that it is continuously leaking water, which can lead to an increase in pressure. It is compatible with several models in the Vaillant range, including the Turbotec Plus VMW ES (series VMW 236/240/242/246/255/280/296/306), among others. It is recommended to replace it when it shows leaks or does not function properly.

VAT included

Compatibility

Vaillant boilers compatible with reference 0020018065

Filling key with reference 0020018065. 13 verified compatibilities: Turbotec Plus VMW ES (series VMW 236/240/242/246/255/280/296/306) and VMW 226.

Proven compatibility

Boiler modelFamilyVerification
Vaillant Turbotec Plus VMW ES (series VMW 236/240/242/246/255/280/296/306)VaillantContrasted
Vaillant VMW 226VaillantContrasted
Vaillant VMW 236VaillantContrasted
Vaillant VMW 240VaillantContrasted
Vaillant VMW 242VaillantContrasted
Vaillant VMW 246VaillantContrasted
Vaillant VMW 255VaillantContrasted
Vaillant VMW 280VaillantContrasted
Vaillant VMW 296VaillantContrasted
Vaillant VMW 306VaillantContrasted
Vaillant VCWVaillantContrasted
Vaillant VMVaillantContrasted
Vaillant VCVaillantContrasted

Can't see your model or have questions? The printed reference takes precedence. How to check it ·

Guide

How to check if the reference 0020018065 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 0020018065. 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.
Diagnosis and fault codes

Symptoms and faults that the filling valve 0020018065 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 of the boiler is low and I can't recover it because the valve seems to be broken.

    Cause: The valve does not seal properly when closed and allows water to escape from the circuit slowly.

    Close it completely and monitor the pressure gauge for a few hours; if the pressure continues to drop, check other points before replacing the valve.

  • 02

    The filling valve is leaking water or dripping continuously.

    Cause: The elbow fitting or the internal gasket has lost tightness over time.

    Dry the area and locate whether the dripping is coming from the elbow fitting or from the connection thread before replacing the part.

  • 03

    The elbow fitting has seized and does not turn.

    Cause: Brass can seize up due to limescale or prolonged lack of use, which is common in taps that are rarely operated.

    Try to move the fitting carefully in both directions; if it doesn't give, do not force it to avoid damaging the thread.

  • 04

    It needs to be replaced because it doesn't close completely and water continues to enter the circuit.

    Cause: The internal shutter is worn or has scale and does not create a tight seal when closed.

    Close it tightly and check if the pressure gauge continues to rise slowly; that confirms that the valve is not closing completely.

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.

Technical data

Data sheet for the filling key Vaillant 0020018065

Catalogue reference
0020018065
Brand
Vaillant
Type of part
Filling valves
Units in stock
6 units
Status
Refurbished
Warranty
1 year
Shipping
Delivery time shown at checkout
Return
14 days
Frequently Asked Questions

Frequently asked questions about the filling key 0020018065

Does this same key work for a VMW 306/5-5?
Yes, the VMW 306/5-5 is on the list of compatible models for this part.
What fault does this switch in the primary circuit of the VCW resolve?
Restore the water pressure of the system when it falls below the operating range.

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Filling Key Vaillant Turbotec Plus VMW ES 21 245 4 5 R3 Ref. 0020018065