Daikin-McQuay 4009504 Four-Way Reversing Valve Body OEM Replacement

The Daikin-McQuay 4009504 is a genuine OEM four-way reversing valve body designed for Daikin-McQuay heat pump HVAC systems. This critical refrigeration component controls the direction of refrigerant flow within the system, enabling seamless switching between heating and cooling operation modes.

The four-way reversing valve body works by redirecting the flow of superheated refrigerant discharged from the compressor. In heating mode, refrigerant is directed toward the indoor heat exchanger. In cooling and defrost modes, refrigerant flow is redirected to the outdoor heat exchanger. This mechanism is fundamental to heat pump operation and system efficiency.

Key Features:

• Genuine Daikin-McQuay OEM replacement part
• Four-way (4WV) valve body configuration
• Directs superheated compressor discharge refrigerant for mode switching
• Enables heat pump systems to transition between heating and cooling cycles
• Engineered to meet original factory specifications for reliable, long-term performance
• Compatible with Daikin-McQuay residential and light commercial HVAC equipment

This is the valve body only and does not include the solenoid coil. When servicing a reversing valve, it is recommended to evaluate both the valve body and coil as part of a complete diagnosis. Always verify compatibility with your specific unit model before ordering.