Thermocouple Stalgast C009004

A pilot flame sensor maintains the safe operation of gas-powered catering appliances by detecting the presence of a small continuous flame. When the pilot flame is lit, the thermocouple generates a small electrical current through the heat of the flame. This current holds open a gas valve, allowing fuel to flow to the main burner. If the pilot flame goes out, the current stops, the valve closes, and the gas supply is cut off automatically, preventing unburned gas from accumulating.

The Thermocouple 800 is fitted into the pilot assembly of the appliance. One end sits directly in the path of the pilot flame, while the other connects to the gas valve via a threaded fitting. Installation requires aligning the sensor tip with the flame and securing the connection to ensure a consistent electrical signal. Once in place, the sensor operates passively, requiring no manual intervention during normal use.

Constructed as a single unit, the Thermocouple 800 consists of two dissimilar metal wires joined at the sensing tip. The junction generates the electrical current when heated, while the rest of the assembly is insulated to prevent short circuits. The connection end is typically threaded for secure attachment to the gas valve.

This component is a direct replacement for pilot flame sensors in professional gas equipment where the original thermocouple has failed or worn out. It fits a range of gas hobs, grills, and ovens used in commercial kitchens, ensuring continued safe operation without replacing the entire appliance.

Regular inspection is recommended to confirm the sensor remains correctly positioned and free from corrosion or soot build-up, which can reduce sensitivity. Replacement is straightforward and requires no specialised tools beyond those used for routine gas appliance maintenance.

The Thermocouple 800 is listed in the Stalgast catalogue under gas safety components for professional catering equipment.