Lennox 42W31 TXV 30067439-890 Reliable Fail-Safe: The synchronous spring

Reliable Fail-Safe: The synchronous spring return mechanism ensures the valve closes automatically upon power loss

The interface utilizes 96 captive trippers allowing for precise 15-minute interval scheduling throughout the day

High-Velocity Performance: Optimized for accurate sampling in airflows up to 4

this genuine Resideo humidifier part provides the factory-spec fit required to eliminate bypass leaks and ensure reliable seasonal operation

Lennox 42W31 TXV 30067439-890 Reliable Fail-Safe: The synchronous springMaintain peak performance in high efficiency cooling systems with the Lennox 42W31 TXV. This genuine OEM Lennox expansion valve is a precision engineered thermostatic expansion valve (TXV) specifically designed for R410A refrigerant applications. As the certified replacement for the 42W3101 (and part number 100679 17), this 5 ton expansion valve ensures a direct fit for residential and light commercial units, including KCA060 and KGA060 series.