The Miller 221736 Point, Spark Gap (Dual)<\/strong> is a critical replacement component designed for the maintenance of Miller TIG welding power sources equipped with high-frequency (HF) arc starters. In TIG welding, the high-frequency circuit is essential for initiating the welding arc without contaminating the tungsten electrode by touching the workpiece. The spark gap assembly acts as the switch that discharges energy into the HF transformer, creating the high-voltage spark required to jump the gap.<\/p>\n Over time, the intense electrical discharge across the spark gap points causes erosion and oxidation. This wear can lead to an inconsistent or weak high-frequency spark, making it difficult to start an arc or maintain a stable pilot arc. Replacing worn points with this genuine Miller 221736 dual spark gap ensures that your machine operates at peak performance. As an Original Equipment Manufacturer (OEM) part, it guarantees precise fitment and material quality that matches the original specifications of your welder.<\/p>\n