Baxi Roca Metal Safety Valve RS 20 20 F Ref. 122155380
The Roca Metálica RS 20 20 F safety valve is a critical component in the boiler, designed to release water when the circuit pressure exceeds the usual limit of 3 bar. If this valve fails, you will notice that it leaks continuously or does not discharge when it should. It is compatible with various boiler models, including Roca RS-20, RS-20/20, RS-20/20F, among others. It is recommended to replace it upon detecting these symptoms to avoid greater issues in the heating system.
VAT included
Consult via WhatsAppBaxi Roca boilers compatible with reference 122155380
Safety valve with reference 122155380. 20 verified compatibilities: RS-20 and RS-20/20.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Baxi Roca RS-20 | Baxi Roca RS-20/20 | Contrasted |
| Baxi Roca RS-20/20 | Baxi Roca RS-20/20 | Contrasted |
| Baxi Roca RS-20/20F | Baxi Roca RS-20/20 | Contrasted |
| Baxi Roca RS-20/20T | Baxi Roca RS-20/20 | Contrasted |
| Baxi Roca RSI-20/20 | Baxi Roca RS-20/20 | Contrasted |
| Baxi Roca R-20/20 | Baxi Roca R-20/20 | Contrasted |
| Baxi Roca R-20/20F | Baxi Roca R-20/20 | Contrasted |
| Baxi Roca R-20/20FF | Baxi Roca R-20/20 | Contrasted |
| Baxi Roca R-20/20FP | Baxi Roca R-20/20 | Contrasted |
| Baxi Roca R-20/20P | Baxi Roca R-20/20 | Contrasted |
| Baxi Roca R-20/20T | Baxi Roca R-20/20 | Contrasted |
| Baxi Roca R-20/20X | Baxi Roca R-20/20 | Contrasted |
| Baxi Roca R-20F | Baxi Roca R-20/20 | Contrasted |
| Baxi Roca R-20FP | Baxi Roca R-20/20 | Contrasted |
| Baxi Roca R-20P | Baxi Roca R-20/20 | Contrasted |
| Baxi Roca R-20A | Baxi Roca R-20/20 | Contrasted |
| Baxi Roca R-30/30 | Baxi Roca R-30/30 | Contrasted |
| Baxi Roca R-30/30F | Baxi Roca R-30/30 | Contrasted |
| Baxi Roca R-30/30FP | Baxi Roca R-30/30 | Contrasted |
| Baxi Roca R-30/30P | Baxi Roca R-30/30 | 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. 122155380 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 122155380. 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 122155380 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
It constantly drips from the bleed pipe, regardless of whether the boiler is heating or not.
Cause: The valve seat has lost tightness, usually due to scale or wear, and does not close completely.
Check with the pressure gauge that the pressure is within the normal range when cold; if it continues to drip with normal pressure, it's the valve.
- 02
It releases a jet of water just when the heating or domestic hot water starts, and it stops shortly after.
Cause: The expansion of water when heated, seeking an outlet, is a sign that the expansion vessel is not properly absorbing that increase.
Check the air pressure in the expansion vessel before touching the valve: if it's low or at zero, that's the real cause of the dripping.
- 03
The pressure keeps rising on the gauge and the valve doesn't release even though it should.
Cause: The internal mechanism gets stuck due to lack of use, which is common if it hasn't been activated for years.
Try operating the manual bleed, if it has one, a couple of times before replacing it: sometimes it releases the seat and starts working again.
- 04
The circuit pressure keeps rising even though the filling hasn't been touched.
Cause: In a valve that doesn't trigger on time, that excess remains inside instead of being gradually bled as it should.
First, ensure that the filling valve is not leaking or improperly closed: if the filling is correct and the pressure continues to rise, check the valve.
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 Roca safety valve 122155380
- Catalogue reference
- 122155380
- Brand
- Baxi Roca
- Type of part
- Safety valves
- Units in stock
- 5 units
- Status
- Refurbished
- Warranty
- 1 year
- Shipping
- Delivery time shown at checkout
- Return
- 14 days
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Baxi Roca RS-20/20T Manual (PDF)Document © Baxi Roca, provided as a technical reference.
Frequently asked questions about the safety valve 122155380
For which Baxi Roca boilers is the metal safety valve RS 20 20 F Ref. 122155380 compatible?
What is the reference for the Baxi Roca safety valve?
What fault codes are documented for this gas valve?
What symptoms may indicate a problem with the safety valve?
Is the Roca RS 20 20 F safety valve easy to install?
Spare parts related to Baxi Roca R-20/20
