This replacement pilot tubing is a standard-stock item for maintaining peak efficiency in residential and commercial hydronic heating applications

Is this limit switch compatible with other brands

ensuring exact electrical resistance and physical mounting alignment

reusing a worn gasket risks gas leaks and "rumbling" combustion due to air infiltration

Its dryseal pipe threads offer superior clearance for tightening flare nuts

York S1-025-43289-000 Limit Switch This replacement pilot tubing isThe York S1 025 43289 000 Limit Switch is a critical safety component designed for precise thermal management in high performance HVACR systems. As a genuine L255F 30 Auto Limit Switch, this device is engineered to monitor furnace plenum temperatures and interrupt the electrical circuit if internal heat exceeds its 255F set point. Upon cooling by approximately 30F, the automatic reset capability restores operations, eliminating the need for manual