745-105

This 18-inch thermocouple is a critical safety component designed for gas-powered heating appliances such as furnaces, water heaters, boilers, and space heaters. Engineered to generate a 30 millivolt (30mV) signal, this sensor ensures that your appliance's gas valve stays open only when a pilot flame is present. If the pilot light goes out, the thermocouple cools down and triggers the gas valve to shut off, preventing hazardous gas leaks. This replacement part is ideal for repairing pilot assemblies where the flame fails to stay lit or the burner won't engage. Its durable construction provides reliable heat sensing and long-lasting performance in residential and commercial gas systems.
Type: Thermocouple / Pilot Safety Sensor
Size: 18 inches
Dimensions: 18 inches
Application: Gas furnaces, water heaters, boilers, and wall heaters utilizing a millivolt pilot system.
Specifications: 30mV output; universal lead length; copper tubing with threaded connector.