Robertshaw 1970-018 Thermocouple

The Robertshaw 1970-018 Thermocouple is a high-performance 18-inch Uni-Couple engineered for universal pilot burner compatibility in commercial and residential standing pilot systems. Designed for professional HVACR gas appliance repair, this unit generates a consistent 20 to 30 millivolt (mV) output, ensuring rapid and safe pilot flame detection. The core construction features a stainless steel outer jacket that provides superior resistance to high-temperature oxidation and heat blistering, while the internal copper and nickel alloy lead maintains low electrical resistance for peak signal integrity. A mica washer is integrated to prevent internal shorting under extreme operating conditions. For streamlined installation, the assembly includes a versatile zip nut and Tinnerman clip, allowing technicians to push, pull, or thread the unit into exact alignment within the combustion chamber. This coaxial connection is threaded to resist vibrations that typically loosen standard sensors in high-cycling heating equipment.

• Universal Compatibility: The 1970 series Uni-Couple design fits virtually all standard or specialized pilot burners using the included Tinnerman clip and zip nut.
• Enhanced Durability: A rugged stainless steel tip extends service life and prevents sensor degradation in both LP and Natural Gas applications.
• Precise Signal Output: Delivers a reliable 20-30 mV signal, maintaining a stable standing pilot and preventing nuisance dropouts or safety shutdowns.
• Vibration Resistance: Features a lock-washer-equipped coaxial connection to secure the connection against thermal expansion and mechanical stress.

Does this thermocouple work with both Natural Gas and Propane systems?
Yes, the materials are rated for the combustion temperatures and bypass characteristics of both LP and NG heating systems.

Is this a direct replacement for 20-30 mV millivolt systems?
Absolutely. This unit is specifically built as a universal millivolt thermocouple replacement for gas valves and pilot assemblies requiring a standard threaded nut or clip-on mount.

What is the purpose of the zip nut included with the Robertshaw 1970-018?
The zip nut allows for rapid positioning; the technician can slide it onto the rolled threads or screw it in, ensuring the sensor tip is perfectly situated in the pilot flame path.

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.