Description
Lennox 72L34 Flowrater Thermostatic Expansion Valve
The Lennox 72L34 is a Flowrater Thermostatic Expansion Valve (TXV) engineered for 3-ton HVAC systems operating on R22 or R407C refrigerant. Designed as a genuine Lennox OEM replacement component, this TXV delivers precise refrigerant metering to maintain optimal evaporator performance, system efficiency, and consistent cooling capacity across a wide range of operating conditions.
Thermostatic expansion valves are critical refrigeration system components that regulate the flow of liquid refrigerant into the evaporator coil. By responding dynamically to superheat conditions at the evaporator outlet, the 72L34 ensures the evaporator is neither flooded nor starved — protecting the compressor and maximizing heat transfer efficiency.
Key Features
- Genuine Lennox OEM Flowrater TXV replacement
- Rated for 3-ton system capacity
- Compatible with R22 and R407C refrigerants
- Precise superheat control for optimal evaporator performance
- Helps protect the compressor from liquid slugging
- Supports system efficiency and consistent cooling output
- Direct OEM fit for compatible Lennox equipment
Application
- Residential and light commercial split-system air conditioners
- Compatible Lennox cooling systems using R22 or R407C refrigerant
- Ideal for service replacement of worn or failed TXV components
Why Choose an OEM TXV?
Using a genuine Lennox OEM thermostatic expansion valve ensures proper fit, calibration, and performance within your system. Aftermarket valves may not be calibrated to the same superheat specifications, potentially reducing efficiency or causing compressor damage. The Lennox 72L34 is built to exact factory standards for reliable, long-term operation.
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