19" Thermocouple

Rheem SP6379M – 19" Thermocouple for Standing Pilot Gas Water Heaters

The Rheem SP6379M is a 19-inch OEM thermocouple assembly designed for use in standing pilot gas water heaters. This component is responsible for generating a millivolt signal to keep the gas control valve open when a pilot flame is present, providing critical safety functionality in atmospheric combustion water heating systems.

It is constructed with a copper sheath and steel end fittings for durability in high-temperature environments and is compatible with select Rheem, Ruud, Richmond, and GE gas water heater models equipped with pilot ignition systems.

Key Features

• Length: 19 inches – suitable for standard pilot burner installations in tank-type gas water heaters
• Application: Flame sensing for pilot safety circuit – maintains gas flow when flame is detected
• Construction: Copper thermocouple with steel threaded nut and ferrule connection
• Compatibility: OEM part for select Rheem, Ruud, Richmond, and GE FVIR water heater models
• Certification: Meets manufacturer performance specifications for gas water heating safety control

Technical Specifications

• Part Number: SP6379M
• Length: 19 inches
• Material: Copper tubing with steel fittings
• System Type: Standing pilot gas water heaters

Installation Requirements

This thermocouple should be installed by trained plumbing or HVAC personnel familiar with gas-fired water heater systems. The sensing tip must be positioned directly in the pilot flame, and all mechanical connections should be properly tightened. Power to the gas valve should be disconnected before servicing.

Use Cases

• Replacement for worn or failed thermocouple in compatible Rheem-family gas water heaters
• Part of regular maintenance for standing pilot water heating systems
• Restores system safety control in flame sensing circuit