
3 Bar Safety Valve Baxi Roca Novanox 24/24F
When you open the tap or start the heating, the 3 Bar safety valve Baxi Roca Novanox 24/24F is responsible for releasing water if the circuit pressure exceeds 3 bar. If this valve fails, you will notice that it drips continuously or does not discharge when it should, which can cause problems in the system. This model is compatible with boilers from the Novanox range, as well as with some models from the Platinum, Neobit, Deimos, and Altais ranges. It is recommended to replace it when visible faults or constant leaks are present.
VAT included
Consult via WhatsAppBaxi boilers compatible with reference 125995117
Safety valve with reference 125995117. Six confirmed compatibilities: Novanox and Novanox Platinum.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Baxi Novanox | Novanox / Platinum | Contrasted |
| Baxi Novanox Platinum | Novanox / Platinum | Contrasted |
| Baxi Platinum Compact | Novanox / Platinum | Contrasted |
| Baxi Neobit S 24/24 F | Neobit | Contrasted |
| Baxi Deimos | Deimos | Contrasted |
| Baxi Altais | Altais | 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. 125995117 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 125995117. 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 safety valve 125995117 resolves.
The safety valve releases pressure when the circuit exceeds its setting. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
Water is continuously dripping from the discharge tube, without the boiler exerting pressure.
Cause: The internal seat of the valve no longer seals properly and allows water to pass through even though the pressure is within normal limits.
Check the pressure gauge of the boiler: if the cold pressure is normal and it still drips, the seat is worn out.
- 02
The pressure rises significantly when heating the circuit, and the gas valve does not activate.
Cause: The internal mechanism has seized due to limescale or dirt and does not lift even when the setting is exceeded.
Manually operate the lever or the bleed cap, if the valve has one, to check if it releases water normally.
- 03
Water suddenly comes out of the valve when the boiler has been heating for a while.
Cause: If the expansion vessel does not properly absorb the expansion of the water, the safety valve performs its function and triggers earlier than expected.
Before changing the gas valve, check the air pressure of the expansion vessel with the boiler cold and depressurized.
- 04
There is a constant water leak that seems to be coming from the body of the gas valve, not from the discharge pipe.
Cause: The gasket or the body of the gas valve has deteriorated and is leaking, although the opening mechanism is functioning well.
Dry the area and observe exactly where the water is coming from: the discharge pipe or the valve body itself.
Fault codes Baxi that this part resolves
| Code | Fault | Diagnosis and solution |
|---|---|---|
| 5 | The boiler shows a fault of lack of water. | The boiler does not have enough water in the circuit, which can cause overheating. It is necessary to check the water level and inspect the safety valve to ensure it is operational. |
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 Baxi safety valve 125995117
- Catalogue reference
- 125995117
- Brand
- Baxi
- Type of part
- Safety Valves
- Units in stock
- 1 unit
- 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.
- Setpoint
- 3 bar
- Connection
- 1/2"












