Lennox 49K03 Expansion Valve 30067439-890 this L175-20 limit switch effectively

this L175-20 limit switch effectively monitors the heat exchanger

as a Factory Authorized Part

What is the safety trip point for this thermostat

It features a 7/8" ODF solder inlet and a 1 1/8" ODM solder outlet

Lennox 49K03 Expansion Valve 30067439-890 this L175-20 limit switch effectivelyThe 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