A thermostatic expansion valve (TXV) is designed to maintain a specific amount of superheat at the outlet of the evaporator. If the superheat value is too high or too low, the TXV may be the cause.

Thermostatic expansion valves (TXVs) are critical components that control refrigerant flow in refrigeration and cooling system evaporator coils. HVACR contractors who replace TXV valves during ...