Sit 840 SIGMA 0840036 gas valve

Gas valve Sit 840 SIGMA (part number 0.840.036, equivalent 900.331.010) Ensure safe and stable gas supply to your boiler with the gas valve Sit series SIGMA model 840 (part number 0.840.036). This automation component is responsible for precise gas flow regulation to the burner and instant fuel shut-off in case of flame failure, guaranteeing reliable heating system operation. Why choose the Sit 840 SIGMA valve: Reliable gas control. The built-in locking mechanism (powered by thermocouple) instantly shuts off gas supply when no heat is detected, eliminating leakage risk. Precise adjustment. Allows flexible gas flow adjustment for optimal operation of main and pilot burners. Stable operation. Ensures clear opening and closing of the gas path without mechanism sticking. Italian quality. Manufacturer Sit (Italy) guarantees high manufacturing precision and long service life. Easy integration. Standard connectors and fittings allow quick replacement of a worn valve without modifying the mounting seat. Key specifications: Manufacturer: Sit (Italy). Part number (SKU): 0.840.036, 900.331.010. Type: Gas valve with thermostatic control (series SIGMA, model 840). Category: Gas valves. Purpose: Regulation and shut-off of gas supply to main and pilot burners. Operating principle: Mains-dependent, with thermocouple control. Operating temperature range: 0–80 °C. Suitable for models: The Sit 840 SIGMA valve is widely used in gas boilers and water heaters using SIGMA series automation. Compatible with boiler models requiring this type of thermostatic valve. Exact compatibility should be checked against your equipment serial number or wiring diagram. Who this product is for