The Southbend 6-36TB Heavy Duty Thermocouple 36" Long 20-30mV is a flame-sensing component used in compatible commercial gas cooking equipment. Positioned near the pilot flame, the thermocouple generates a small electrical voltage when heated. This signal indicates flame presence to the connected gas safety control, allowing the valve to remain open while the pilot continues burning. ... https://partsfe.com/hd-thermocouple-for-southbend-part-6-36tb