Lennox 14W77 TXV 30067439-890 ensuring compatibility with a wide

ensuring compatibility with a wide range of popular boiler sizes

making it an ideal field replacement for integrated sensing ports where the original thermistor has drifted or failed

Common Questions What is the maximum inlet pressure for this valve

This general service valve is the industry standard for contractors requiring dependable electromechanical fluid control and simplified installation in heavy-duty piping networks

Lennox 14W77 TXV 30067439-890 ensuring compatibility with a wideThe Lennox 14W77 is an OEM thermostatic expansion valve (TXV) engineered for high precision refrigerant metering in residential and light commercial R410A systems. Designed as a direct 100254 02 replacement, this valve features 3 8" x 1 2" ODF connections and is critical for maintaining the balance between liquid and vapor in the evaporator. By accurately regulating the refrigerant flow based on load demand, the 14W77 prevents compressor floodback and