Cross Reference Numbers:1550022, T39027, 39027, 217027, 9220001R05, 9220059G00, 9220059G00, 92200-59G00, 39027. TXV Type RIGHT ANGLE. The expansion valve is the component in the refrigerant system that regulates the rate of flow of refrigerant into the evaporator core through the use of variable valve opening as governed by a remote bulb sensing evaporator temperature.