Its compact footprint and standardized mounting facilitate seamless integration during field repairs

This OEM Lennox part is a manual reset

restoring system operation once safe temperatures are reached

gradual gas release to prevent combustion surges and "hard starts" that can stress the heat exchanger

Nordyne 669770 TXV 322057-301 Its compact footprint and standardizedThe Nordyne 669770 TXV is a precision engineered OEM thermal expansion valve designed for residential and light commercial HVAC applications. Built specifically for R410A refrigerant systems, this metering device is calibrated for 2 3 ton capacities, providing accurate flow regulation to maintain target superheat levels. By monitoring evaporator temperatures and modulating liquid refrigerant delivery, the 669770 TXV prevents liquid slugging and