Lennox 49K03 Expansion Valve 30067439-890 preventing the operation of the

preventing the operation of the burner under unsafe draft conditions

a professional-grade 3 Ton TXV Valve

this L175-20 limit switch effectively monitors the heat exchanger

Dual Functionality: The SPDT contact configuration allows for concurrent compressor shutdown and fault notification

Lennox 49K03 Expansion Valve 30067439-890 preventing the operation of theThe Lennox 49K03 Expansion Valve is a critical metering device engineered for precise refrigerant management in 3 ton R22 air conditioning systems. As a direct OEM replacement part, this thermostatic expansion valve (TXV) features a 1 4" flare (FLR) connection, ensuring a secure, leak resistant interface with the liquid line. Also identified by catalog number 49K0301 and model 041239 07, this component is essential for maintaining the correct