ESCO Brazing and Soldering Practice Test

Ignition of the gas-air mix needs a spark source that can light the flame as the gas is released. The spark ignitor is specifically designed to create that brief, high-energy spark to ignite the mixture safely and reliably at the torch tip. Pliers are for gripping or bending parts, a flux brush is used to apply flux, and a torch handle is part of the torch assembly for holding and directing the flame but does not provide ignition on its own. So the spark ignitor is the accessory meant to start the flame.