Goodman's TXV valves are designed to improve the reliability and efficiency of your central split system. With the TXV-30, you can be assured that your one-and-a-half to two-and-a-half ton system is getting the proper refrigerant flow, even through changing conditions. Since this valve is installed externally, it is easy to service and maintain. If you're looking to improve the efficiency and performance of your system, the TXV-30 is a good start. Product Compatible With Goodman GSX160181 Air Conditioners Goodman GSX160241 Air Conditioners Goodman GSX160301 Air Conditioners