The Imperial 36016 Extension Thermocouple (48") is a replacement temperature sensor designed for use in gas appliances such as water heaters, furnaces, and ovens. It functions by generating a small electrical current when heated by a pilot flame, which helps keep the gas valve open for safe and efficient operation. With its 48-inch length, it offers extended reach for installations wh... https://partsfe.com/extension-thermocouple-for-imperial-part-36016