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The York S1-025-30321-700 Limit Switch is a critical safety component engineered for precise thermal monitoring in high-output HVAC furnace systems
Integrating this genuine OEM replacement part ensures your system maintains its original design pressure ratings and mechanical integrity without the risk of rod bending or thread failure under hydraulic surges
Designed for high-integrity floating control and incremental signaling applications
Precision Engineering: The 4
Williams P309600 Limit Switch The York S1-025-30321-700 Limit SwitchEnsure the high limit safety of your HVAC installations with the Williams P309600 Limit Switch. This OEM spec automatic limit switch is specifically engineered for Forsaire Counterflow Top Vent furnaces, including the widely serviced 3508 and 6508 series. A critical safety component, this switch features a calibrated 150190F temperature range, designed to interrupt the burner circuit if the heat exchanger exceeds safe operating thresholds. For veteran
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