Thermostatic valves mgbasawanye na-ahazi ịgbanye mmiri refrigerant n'ime ihe ndị na-ekupụ ọkụ.Igwe ọkụ na-ekpo ọkụ na-achịkwa injection.
Ya mere, valvụ ndị dị mma maka ịgbanye mmiri mmiri na "akọrọ" evaporators ebe okpomọkụ dị na ebe a na-ekpo ọkụ na-adaba na ibu evaporator.