Robertshaw 1970-048 Thermocouple

For service technicians requiring a universal replacement for standing pilot systems, the Robertshaw 1970-048 Thermocouple is a field-proven 48-inch Uni-Couple designed for maximum versatility across residential and commercial gas applications. This heavy-duty thermocouple features a robust stainless steel outer jacket to resist heat blistering and environmental corrosion, ensuring reliable pilot burner safety in high-ambient conditions. Utilizing a high-conductivity copper and nickel alloy element, it consistently generates a 20 to 30 millivolt output to maintain gas valve coil engagement. The standout feature is the universal zip nut, which allows for rapid positioning by pushing, pulling, or threading onto the rolled threads—eliminating the need for various adapter kits. This HVAC replacement part includes a stainless steel tip for extended service life and a mica washer to prevent electrical shorting. Whether you are servicing a furnace, boiler, or water heater, the 1970-048 provides the lead length necessary for complex routing while maintaining low electrical resistance.

• Universal Compatibility: The Uni-Couple design fits virtually all pilot burner brands, reducing the number of truck-stock SKUs.
• Precision Positioning: Includes a versatile zip nut and Tinnerman clip for secure, vibration-resistant mounting.
• Enhanced Durability: Stainless steel jacket protects the internal elements from high-temperature oxidation and corrosion.
• Reliable Signal: High-purity copper tubing ensures low electrical resistance and stable millivoltage for the gas valve's power unit.

• Can this replace a shorter thermocouple? Yes, the 48-inch lead can replace shorter leads, provided the excess length is coiled carefully and does not contact the main burner flame.
• Does this include mounting hardware? Yes, it comes standard with the zip nut and retainer clip for flexible installation.
• What causes a low millivolt reading? Common issues include a dirty pilot orifice, cold junction overheating, or loose connections at the co-axial gas valve terminal.

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.