De Dietrich 97580175 pilot burner nozzle FU L0.35

This part is a pilot burner nozzle. In a gas-fired burner, the pilot burner carries a small permanent or intermittent flame that lights the main burner and, in combination with an ionisation electrode, holds the flame signal for the burner control. The nozzle is the component that meters and directs the fuel (typically gas) into the pilot burner tube, where it mixes with air and burns. Pilot burner nozzles are selected by their orifice diameter, which determines the gas flow rate for the pilot flame, and by the gas type (natural gas, LPG, etc.). The nozzle must match the burner series and the pilot burner design for which it was shaped. When replacing a nozzle, use the manufacturer’s code from the existing part to ensure the correct orifice size and thread type. A nozzle with a wrong orifice can cause a weak flame that fails to ignite the main burner or a flame that is too tall, leading to sooting or overheating of the ionisation electrode. This specific nozzle carries the designation FU L0.35 and is listed under the De Dietrich brand. It is a replacement part intended for use in pilot burners within De Dietrich heating equipment. No further specifications, such as dimensions or compatible burner models, are given in the source data.