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Universal Compatibility: Standard 1/8 inch NPT connection allows for a direct drop-in replacement for older Hoffman 500 or generic manual air bleeders
ensuring your furnace avoids "no-light" lockout codes during peak demand
Wide Angle Viewing: Large lens provides high visibility for detecting bubbles
This auto reset limit switch is engineered with a snap-action contact system that opens at 180°F and automatically closes at 150°F
Reznor 101901 Switch normally openThe Reznor 101901 Switch is a heavy duty Single Pole Double Throw (SPDT) component engineered for precise control in HVACR systems. Rated for 15 Amps, this genuine OEM Reznor part is critical for managing blower and fan operations in industrial unit heaters. Designed for 24VAC or line voltage applications, the Reznor 101901 SPDT Switch facilitates seamless load switching between two active outputs, ensuring stable climate management in commercial