Expansion Vessel Chaffoteaux Minima MX2 24 FF
If you notice that the pressure of your boiler fluctuates sharply or that the safety valve is leaking, you may need a new expansion vessel Chaffoteaux Minima MX2 24 FF, reference 61311907. This part is responsible for absorbing the increase in water volume when heated, preventing pressure from becoming uncontrolled. It is compatible with models such as Compy MX2 24 FF, Compy MX2, Mira, among others. It is recommended to replace it if you observe pressure loss or signs of rupture in the membrane.
VAT included
Consult via WhatsAppChaffoteaux boilers compatible with reference 61311907
Expansion vessel with reference 61311907. Six confirmed compatibilities: Compy MX2 24 FF and Compy MX2.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Chaffoteaux Compy MX2 24 FF | Chaffoteaux | Contrasted |
| Chaffoteaux Compy MX2 | Chaffoteaux | Contrasted |
| Chaffoteaux Mira | Chaffoteaux | Contrasted |
| Chaffoteaux Mira System | Chaffoteaux | Contrasted |
| Chaffoteaux Mira Comfort | Chaffoteaux | Contrasted |
| Chaffoteaux Mira Green | Chaffoteaux | 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. 61311907 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 61311907. 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 expansion vessel 61311907 resolves.
The expansion vessel absorbs the expansion of water when heated. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The heating takes a long time to warm up and the pressure gauge fluctuates sharply with each cycle.
Cause: A vessel that no longer dampens well allows the pressure to fluctuate more than normal every time the boiler starts.
Bleed the air from the radiators first: a circuit with air causes pressure fluctuations similar to those of an empty glass.
- 02
There is noticeable moisture or droplets around the safety valve even though it doesn't fully activate.
Cause: The tank is close to its capacity limit and the gas valve starts to "sweat" at pressure peaks.
Check the cold pressure of the circuit; if it is already above normal when cold, first check the filling before touching the expansion vessel.
- 03
A dry thump is heard in the pipes when the heating pump stops.
Cause: Without the air cushion of the vessel, the sudden shutdown of the pump is transmitted as a shock in the installation.
Check that the pump is not set to maximum speed and that the automatic air vents are not blocked.
- 04
When pressing the valve of the tank to check it, water comes out instead of air.
Cause: If water comes out when checking the precharge, the internal membrane is broken and the expansion vessel has lost its function.
Perform this check with the boiler cold and the circuit without pressure: the air should come out dry, never with water, to rule out the expansion vessel.
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 Chaffoteaux expansion vessel 61311907
- Catalogue reference
- 61311907
- Brand
- Chaffoteaux
- Type of part
- Expansion vessels
- 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.
- Set pressure
- 3 bar
Frequently asked questions about the expansion vessel 61311907
Is this expansion vessel compatible with the Chaffoteaux Compy MX2 24 FF boiler?
Can I use this expansion vessel in a Chaffoteaux Mira?
Does this expansion vessel work for the Chaffoteaux Mira System boiler?
How many models are compatible with this expansion vessel?
Are there documented fault codes for this expansion vessel?
Is this expansion vessel suitable for the Chaffoteaux Mira Comfort?
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