The Glow-worm electrode is responsible for making the spark that begins the combustion procedure within the boiler and is responsible for monitoring whether there is a flame present in the burner. This is an important safety device that makes sure the boiler isn't still supplying gas without a flame.
Fits a number of Glow-worm appliances
Technical specification
Waist Sizeaa79cj13gzTypeElectrodeSupplier Part NumberS202635Brand NameGlow-Worm