Berko 4520-2048-000 Limit Switch The AT140A1018 serves as a

The AT140A1018 serves as a direct

maintaining the calibration accuracy required for modulating actuators and valves without interference

Which furnace brands use this part

70" WC to ensure exact differential pressure sensing and prevent nuisance tripping or unsafe firing

leak-proof interface between the valve bracket and the float chamber

Berko 4520-2048-000 Limit Switch The AT140A1018 serves as aThe Berko 4520 2048 000 is an OEM 135F CO Auto Limit Switch designed for high performance thermal regulation in Marley Engineered Products and QMark 900 Series B heating systems. This 2 pole limit switch operates with an automatic reset mechanism, functioning as a critical safety component that opens on temperature rise to prevent overheating. Engineered for HVACR technical specifications, it features a single pole single throw (SPST) switch action,