BASO K19AT-24 Thermocouple

The BASO K19AT-24 is a professional-grade Super Slim Jim universal replacement thermocouple designed for high-reliability performance in standing pilot ignition systems. This 24-inch lead length model is engineered for rapid response times, delivering a stable open circuit voltage range of 25-35 mV to ensure consistent pilot safety monitoring and gas valve operation. The slim diameter tip allows for seamless installation in tight burner assemblies where standard thermocouples often fail to seat properly. Equipped with a heavy-duty spring clip mechanical connection, the K19AT-24 maintains robust contact even under high-vibration conditions common in commercial HVACR equipment. This unit is electronically and mechanically identical to the K19AT-24H, providing a direct drop-in replacement for service technicians. Whether you are servicing gas-fired furnaces, boilers, or water heaters, this thermal induction flame sensor provides the millivolt output necessary to keep the electromagnetic coil in the gas valve energized and the system functioning safely.

Key Performance Benefits

• Universal Compatibility: The "Super Slim Jim" profile fits almost any pilot burner bracket, making it a critical truck-stock item for HVAC pilot repair.
• Precise Signal Output: Rated for 25-35 mV open circuit, ensuring dependable hold-in current for the main gas valve.
• Thermal Durability: Constructed with high-grade alloys to resist oxidation and sensor burnout in standing pilot systems.
• Secure Mounting: Features a high-tension spring clip to prevent "nuisance trips" caused by pilot flame turbulence or thermal expansion.
• Cross-Reference Accuracy: Fully interchangeable with the K19AT-24H for simplified inventory management.

Common Installation Questions

Is the K19AT-24 compatible with millivolt-only gas valves?
Yes, as a standing pilot thermocouple, it generates the specific 25-35 mV signal required by traditional millivolt gas control valves for safe operation.

Will this fit in pilot burners with limited clearance?
The "Super Slim Jim" design is specifically engineered for narrow slots and compact burner housings where a standard 11/32" or 3/8" thermocouple tip might be too bulky.

Can I use a 24-inch thermocouple if my original lead was shorter?
Yes, as long as the 24-inch length reaches the valve. Any excess lead should be carefully coiled (avoiding sharp kinks) to prevent damage to the internal copper conductor.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.