Expansion valves for ACs and refrigeration equipment, Alco TX7 range. Applications of TX7 Alco thermostatic valves: refrigeration circuits, air conditioning and heat pumps. Compatible refrigerants: R134a, R22, R407C, R410A, R32, R450A, R513A. Alco/Copeland/Emerson ...thermostatic valves stand out for their precise control of refrigerant injection even in overload conditions and extended vaporization range. Mai mult