York S1-025-35389-002 Reversing Valve 318973-401 If CO2 or PIR functionality

If CO2 or PIR functionality is required

Durable Construction: Built to 48Z frame specifications for consistent mechanical alignment and stability

allowing for precise management of multiple heating or cooling stages

The 1/2-inch bore facilitates a secure fit on standard motor shafts

High-Limit Protection: Prevents overheating by monitoring plenum temperatures and interrupting the burner circuit if airflow is restricted

York S1-025-35389-002 Reversing Valve 318973-401 If CO2 or PIR functionalityThe York S1 025 35389 002 Reversing Valve is a critical 4 way pilot operated component designed for high performance heat pump reversing valve applications. This genuine York OEM replacement part comes complete with the necessary solenoid coil to ensure immediate restoration of your systems directional refrigerant flow. Engineered for reliability in both residential and light commercial York HVAC systems, it facilitates the essential transition