Glow-worm Pilot Assembly

These parts are located in front of the main burner of the Glow-worm boilers, they consist of an electrode, thermocouple and pilot injector. Its sole purpose is to light the pilot light and to hold the gas valve open via the thermocouple. The thermocouple that is located in the pilot assembly is heated up by the pilot flame which in turn sends a small voltage down to the gas valve holding in the pilot solenoid.