... a traditional thermal expansion valve.2, It is used for regulating the liquid refrigerant's supply qantity in evaporator.3, It is ... suitable for the supply of the refrigerant in dry-type evaporator.4, It can control automatically by the ... parameters1, Refrigerant: R22 , R502, R134A, R404A2, Evaporative temperature: -25 to 15 °C3, Valve port leaage: ≤ 0.1Mpa/10s4,Adjustment range of superheat ...