Lennox 99K40 TXV 326058-758 Whether you are managing smoke-spill

Whether you are managing smoke-spill fans or filter monitoring

this 120Vac unit provides consistent performance for large control dampers where positive close-off is critical

automatically interrupting the electrical circuit if the heat exchanger temperatures exceed the 170°F threshold

or vacuum/negative pressure

Standardized Fit: Features a 7/8" finished bore with keyway and hex setscrews for secure mounting on standard NEMA motor shafts

Lennox 99K40 TXV 326058-758 Whether you are managing smoke-spillThe Lennox 99K40 is a high performance HVAC thermal expansion valve engineered for precision refrigerant metering in large capacity 8 ton air conditioning systems and heat pump equipment. Featuring a 3 8" x 7 8" ODF (Outside Diameter Fitting) connection and a 30 inch capillary tube, this OEM component is designed to replace aging or failing valves in Lennox split systems, ensuring the evaporator receives the exact refrigerant charge needed to maintain