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Rheem SP35899B is a 24-inch thermocouple kit designed for flame sensing in gas appliances and pilot/ignition assemblies. The thermocouple produces a small millivolt signal when heated by the pilot flame and communicates with the gas valve to allow or shut off gas flow. It is supplied as an OEM replacement length intended for Rheem water heater and HVAC pilot systems and is lightweight for installation.
OEM 24-inch thermocouple kit for Rheem pilot and ignition systems with millivolt flame sensing
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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