BASO Gas Products K19AT-36 Thermocouple 36"

The BASO Gas Products K19AT-36 is a 36-inch thermocouple, a safety shutoff device essential for gas-fired HVAC systems with pilot lights. It works by converting heat into a small electrical voltage (around 30 millivolts). Positioned near the pilot flame, the tip of the thermocouple heats up, creating a temperature difference from its base. This difference generates a millivolt current that signals the gas control valve to stay open, allowing gas flow to the burner. If the pilot flame extinguishes, the thermocouple cools down, the voltage drops, and the gas control valve shuts off the gas supply for safety reasons. This 36-inch length provides flexibility for various HVAC system installations.