NPT Compatibility: Features a standard 1/8" NPT thread for universal integration into most Maxitrol regulators and gas control manifolds

instantly interrupting the gas valve circuit if airflow obstructions or blower failures cause internal temperatures to exceed safe operational parameters

Key Benefits Dual Voltage Compatibility: Rated for both 370 VAC and 440 VAC applications

making it an essential service truck stock item for residential and light commercial furnace

it is also the standard replacement part for many Intertherm and Miller mobile home furnaces requiring an LP pilot setup

Rheem-Ruud 47-21663-01 Limit Switch NPT Compatibility: Features a standardThe Rheem Ruud 47 21663 01 Limit Switch is a high precision, OEM replacement furnace limit switch designed for critical thermal protection in HVAC systems. This SPST normally closed switch is engineered to monitor heat exchanger temperatures effectively, featuring a fixed open temperature of 140 degrees F and a fixed close temperature of 130 degrees F. As a general purpose limit switch, it utilizes an auto reset mechanism, ensuring the system resumes