Filling Key for Boiler VMW 306/5-5, Ref. 0020265137
The filling valve for boiler VMW 306/5-5, Ref. 0020265137, is used in boilers from the Vaillant Turbotec, Atmotec, and Ecotec ranges. This part allows water to be replenished in the heating circuit to recover the appropriate pressure. When it fails, the user may notice that the circuit cannot be refilled or that there is a continuous water leak, which causes an increase in pressure. It is compatible with models such as VMW 236, VMW 240, VMW 242, among others. It is recommended to replace it when it shows leaks or does not function properly.
VAT included
Consult via WhatsAppVaillant boilers compatible with reference 0020265137
Filling key with reference 0020265137. Nine confirmed compatibilities: VMW 236 and VMW 240.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Vaillant VMW 236 | Vaillant Turbotec / Atmotec / Ecotec (VMW series wall-mounted combi) | Contrasted |
| Vaillant VMW 240 | Vaillant Turbotec / Atmotec / Ecotec (VMW series wall-mounted combi) | Contrasted |
| Vaillant VMW 242 | Vaillant Turbotec / Atmotec / Ecotec (VMW series wall-mounted combi) | Contrasted |
| Vaillant VMW 246 | Vaillant Turbotec / Atmotec / Ecotec (VMW series wall-mounted combi) | Contrasted |
| Vaillant VMW 255 | Vaillant Turbotec / Atmotec / Ecotec (VMW series wall-mounted combi) | Contrasted |
| Vaillant VMW 280 | Vaillant Turbotec / Atmotec / Ecotec (VMW series wall-mounted combi) | Contrasted |
| Vaillant VMW 282 | Vaillant Turbotec / Atmotec / Ecotec (VMW series wall-mounted combi) | Contrasted |
| Vaillant VMW 296 | Vaillant Turbotec / Atmotec / Ecotec (VMW series wall-mounted combi) | Contrasted |
| Vaillant VMW 306 | Vaillant Turbotec / Atmotec / Ecotec (VMW series wall-mounted combi) | 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. 0020265137 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 0020265137. 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 0020265137 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 faucet continuously drips water even when it's completely closed.
Cause: The internal seat or the ball seal is worn out and no longer seals properly.
Close the valve completely by turning it all the way to the end of its travel and check if the humidity reappears after a few hours.
- 02
When opening the filling valve, the pressure gauge barely rises or takes a long time to rise.
Cause: The ball valve is stuck due to limescale or dirt and does not allow water to flow properly.
Open and close the valve several times in a row and check if you feel resistance when turning it or if the flow is very weak.
- 03
The handle is stiff, it's hard to turn, or it has broken.
Cause: The plastic of the handle deteriorates over time and with the heat from the boiler.
Try to turn it carefully and without forcing to see if it rotates completely or if it is already broken inside.
- 04
A lime or greenish stain can be seen around the valve or on the floor under the boiler.
Cause: It's a sign that the tap has been dripping for a while, even if it's just a small amount each time.
Dry the area well and check it several hours later to see if it becomes damp again.
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 Vaillant 0020265137
- Catalogue reference
- 0020265137
- Brand
- Vaillant
- Type of part
- Filling valves
- Units in stock
- 1 unit
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- 1-2 business days
- Return
- 14 days
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Vaillant VMW 246 Manual (PDF)Document © Vaillant, provided as a technical reference.
Frequently asked questions about the filling key 0020265137
Is this filling valve with reference 0020265137 suitable for the VMW 306/5-5 boiler?
What is the purpose of the filling valve for the heating circuit of the VMW 306/5-5?
Which models are compatible with the filling key LLVMW306?
Does the text 'closed' engraved on the handle of the valve of the VMW 306/5-5 indicate the manufacturer?
Are there documented fault codes for this filling valve?
Spare parts related to Vaillant Vaillant Turbotec / Atmotec / Ecotec (VMW series wall-mounted combi)
