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Robertshaw thermopile pilot generator, 36 inch coaxial cable, brass probe with mounting nut

Robertshaw

Robertshaw 1951-536 Thermopile 36 in LP/NG 250-750mV Pilot

SKU CH-KEZM-CGF7C

Generates 250 to 750 mV for standing pilot systems with a 36 in coaxial cable

  • Product typePilot Generator
  • 36 in cable reaches pilot assemblies easily
  • 250-750 mV output powers gas valves reliably
  • 3/8 in coaxial connection fits universal CP-2 series
  • 3/8 in probe diameter matches standard pilot brackets
  • Includes mounting nut for secure installation

Robertshaw 1951-536 Thermopile Overview

The Robertshaw 1951-536 is a replacement thermopile designed for standing pilot systems in gas-fired appliances. It generates 250 to 750 millivolts to power the gas valve without external electricity. The 36-inch cable and coaxial connection fit universal CP-2 series pilots.

Thermals Noise and Power Draw

The thermopile operates passively using heat from the pilot flame, producing zero noise and drawing no electrical power. Its output varies between 250 and 750 millivolts depending on flame quality and connection integrity. The coaxial process connection ensures stable signal transfer during normal operation.

Upgrade and Replacement Context

This part replaces a failed or weak thermopile in existing standing pilot assemblies. The jump is worth it when the pilot stays lit but the main burner will not ignite due to low millivolt output. It is not for electronic ignition systems or appliances requiring a different probe diameter or cable length.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $37.99
Pricier than about 67% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameROBERTSHAW
Product typePilot Generator

Questions about this item

How do I install the 36 in thermopile on a standing pilot system?

Connect the coaxial 3/8 in process connection, insert the 3/8 in diameter probe 2 in into the pilot flame, and tighten the included mounting nut.

When will the thermopile need replacement?

Replace it when the millivolt output drops below the 250 to 750mV range or the pilot fails to stay lit consistently.

What limits output during sustained pilot operation?

The 250 to 750mV range is the operating window; extended heat exposure can cause the probe to drift below 250mV first.

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