Sit 845 SIGMA 0845037 ny zawór gazowy

Gas valve Sit 845 SIGMA (part number 0.845.037, equivalent 900.331.015) Ensure safe and precise gas supply to your heating boiler with the multifunctional gas valve Sit series SIGMA model 845 (part number 0.845.037). This automation unit combines gas regulation, shut-off and modulation functions in one housing, guaranteeing stable burner operation and instant fuel shut-off when the flame goes out. Why choose the Sit 845 SIGMA valve: Smooth power modulation. The built-in modulator allows smooth adjustment of combustion intensity, increasing heating comfort and efficiency. Reliable gas control. When the thermocouple signal is absent or voltage is lost, the valve instantly shuts off gas supply, eliminating leakage risk. Precise adjustment. The built-in servo regulator and manual output pressure adjustment capability ensure optimal burner operation mode. Italian quality. Manufacturer Sit (Italy) guarantees high manufacturing precision and long service life. Universal compatibility. Standard connectors and fittings allow quick replacement of a worn valve without modifying the mounting seat. Key specifications: Manufacturer: Sit (Italy). Part number (SKU): 0.845.037, 900.331.015. Type: Gas valve with servo regulation and modulator (series SIGMA, model 845). Category: Gas valves. Operating pressure: inlet up to 60 mbar, output adjustable 1–37 mbar. Supply voltage: 230 V AC (coils EV1/EV2), modulator 17 V DC. Operating temperature: –15 °C to +60 °C. Connection: Rp 3/4" (ISO 228). Power consumption: EV1 — 4.3 W, EV2 — 2 W. Protection class: complies with EN 126, CE standards. Suitable for models: The Sit 845 SIGMA valve is widely used in wall-mounted gas boilers European