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Robertshaw thermocouple 18 in threaded probe copper nickel alloy

Robertshaw

Robertshaw 1970-018 Thermocouple 18 in 20 to 30 mV Threaded

SKU CH-TRJN-SSKT2

An 18-inch threaded thermocouple producing 20 to 30 mV for standing pilot systems

  • TypeThreaded
  • 18-inch copper-nickel cable reaches pilot assemblies
  • 20-to-30 mV output powers standing-pilot gas valves
  • Stainless-steel probe resists high-temperature corrosion
  • Threaded coaxial connection fits universal Uni-couple systems
  • Includes Tinnerman clip for secure mounting

Robertshaw 1970-018 Thermocouple 18 in

The Robertshaw 1970-018 is an 18 in threaded thermocouple designed for standing pilot systems. It delivers a 20 to 30 mV output using a stainless steel element with a copper and nickel alloy cable. The 3/8 in probe diameter and 2 in probe length suit universal Uni-couple series compatibility. A Tinnerman clip is included for secure mounting.

Replaces worn pilot sensors on gas appliances

This thermocouple replaces a failed or degraded sensor that no longer generates sufficient millivolt output to hold the gas valve open. The upgrade is worth it when the pilot flame is present but the main burner will not stay lit. It restores safe operation on compatible standing pilot equipment using a coaxial process connection.

Threaded coaxial connection simplifies installation

The threaded coaxial process connection allows direct replacement without special tools. Ensure the probe sits properly in the pilot flame for reliable 20 to 30 mV generation. Common issues include loose connections at the gas valve or a probe positioned too far from the flame. The included Tinnerman clip helps secure the cable and prevent vibration damage.

Highlights

  • 18-inch copper-nickel cable reaches pilot assemblies
  • 20-to-30 mV output powers standing-pilot gas valves
  • Stainless-steel probe resists high-temperature corrosion
  • Threaded coaxial connection fits universal Uni-couple systems
  • Includes Tinnerman clip for secure mounting

Specifications

BrandRobertshaw
TypeThreaded

Questions about this item

What thread size does the 1970-018 need to screw into the gas valve?

The thermocouple uses a coaxial process connection that threads directly into the gas valve pilot port.

Which step is most often missed when fitting the 18 in thermocouple?

Many installers forget to seat the included Tinnerman clip onto the probe, which secures it in the pilot bracket.

How do I know when the 20 to 30 mV element needs replacing?

If the pilot flame is steady but the main burner will not stay lit, the stainless-steel element has likely dropped below 20 mV output.

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