SIT Sigma 845 Gas Valve - Biasi 6MA / 6ME - Ref. BI1123104
SIT Sigma 845 gas valve (code 0845061), with two solenoid valves EV1 and EV2 that regulate the gas flow to the burner. Maximum inlet pressure 60 mbar, regulated outlet pressure between 1 and 37 mbar. According to external sources, it is equivalent to the Biasi BI1123104 reference, used in 6MA and 6ME boilers. It is replaced when ignition or flame modulation fails.
VAT included
Consult via WhatsAppBiasi boilers compatible with reference BI1123104
Gas valve with reference BI1123104. Eight confirmed compatibilities: 6MA and 6ME.
Proven compatibility
| Boiler model | Family | Verification |
|---|---|---|
| Biasi 6MA | 6MA | Contrasted |
| Biasi 6ME | 6ME | Contrasted |
| Biasi 24 | BIT | Contrasted |
| Biasi 24 | GMA | Contrasted |
| Biasi 28 | GMA | Contrasted |
| Biasi 24 | GME | Contrasted |
| Biasi 28 | GME | Contrasted |
| Biasi MICRONOX | MICRONOX | 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. BI1123104 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 BI1123104. 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 gas valve BI1123104 resolves.
The gas valve regulates and modulates the gas flow to the burner. These are the typical symptoms and what to do:
Common symptoms and faults
- 01
The boiler does not ignite, the flame does not form.
Cause: The solenoid valve EV1 does not open and does not allow gas to flow to the burner.
Measure if there is power at the EV1 connector before replacing the complete gas valve.
- 02
The burner ignites but the flame remains low.
Cause: The solenoid valve EV2 does not open or the outlet pressure is incorrect.
Check if the flame increases when the demand for heating or domestic hot water rises, or if it remains the same.
- 03
There is a smell of gas near the gas valve.
Cause: A gasket or the body of the gas valve may be leaking gas.
Shut off the gas supply and ventilate the area; do not attempt to ignite until you have checked it.
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 gas valve Biasi BI1123104
- Catalogue reference
- BI1123104
- Brand
- Biasi
- Type of part
- Gas valves
- Units in stock
- 5 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.
- Manufacturer
- SIT
- Model (screen printed)
- 845 SIGMA
- SIT Code
- 0845061
- Biasi equivalence
- Ref. BI1123104, used in Biasi 6MA/6ME boilers
- Maximum inlet pressure (Pi max)
- 60 mbar
- Outlet pressure (Po)
- 1-37 mbar
- Maximum current
- 185 mA
- Ambient temperature
- 0/60°C
- Place of manufacture
- Italy (Padua)
- The actual manufacturer of the component is SIT, not the boiler brand.
Manuals and technical documentation
Official documentation of the boiler, useful for locating the part and cross-referencing the fault codes.
- Manaut GMA 24 Manual (PDF)Document © Biasi, provided as a technical reference.
Frequently asked questions about the gas valve BI1123104
Does this SIT Sigma 845 valve work for the Biasi GMA 28 boiler?
What fault indicates that the gas valve of the Biasi 6ME needs to be replaced?
What is the inlet and outlet pressure that the SIT Sigma 845 gas valve of the Biasi BIT 24 can handle?
Spare parts related to Biasi GMA
