Thermal expansion valve, part number 669566R, fits select Frigidaire, Maytag, Gibson, Kelvinator, Tappan, White-Westinghouse, Nordyne, Garrison, Intertherm, Mammoth, Medallion, Philco, GrandAire, or Miller Air Handler or Central Air Conditioners.
A thermal expansion valve, commonly referred to as a TXV, regulates the amount of refrigerant in the evaporator coil to help maintain an optimal working temperature.