Acting as a direct replacement for SHE0121 and SHE5391

automatically interrupting the 24V signal to the contactor if conditions fall out of range

which keeps the fan running constantly

secondary combustion noises

Designed for a 500 PSI max pressure

Rheem-Ruud SP9013E Valve Els PW 17895 Acting as a direct replacementThe Rheem Ruud SP9013E is a high capacity 3 4" MxF Temperature and Pressure Relief Valve engineered for critical safety oversight in residential and commercial water heating systems. As the direct OEM replacement for AP9013E 3, this T&P relief valve is designed to mitigate hazardous over pressurization and thermal expansion. It features a robust bronze body and a 5 inch thermostat element with a specialized thermo bonded coating for precise