Broad Compatibility: Explicitly engineered for both 80% and 90% efficiency Armstrong gas furnaces

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OEM Compatibility: Engineered as a direct drop-in replacement for Reznor FE50-165 models and compatible unit heaters

Precise OEM Fitment: Serves as an exact replacement for HC98ZZ480 and 72502DP26

Common Questions Is the 90-374 compatible with 120V control circuits

Ranco O16-557 Pressure Control Els PW 17895 Broad Compatibility: Explicitly engineered forThe Ranco O16 557 Pressure Control is a heavy duty single low pressure control engineered for precision sensing in commercial refrigeration and HVACR systems. Built with a NEMA 1 enclosure and a robust plated steel frame, this SPDT pressure switch provides flexible control, allowing for "open high" or "open low" operations. It features an adjustable 12" WC to 50 PSI pressure range and a field tunable 5 to 35 PSI differential, ensuring stable