... base&welded junction 4,single-track flow Brief introduction1, RF type expansion valve is a traditional thermal expansion valve.2 ... and welded junction.6, The capillry's length of RF type expansion valve is a standard of 1.5 meters ... 15 °C3, Valve port leaage: ≤ 0.1Mpa/10s4,Adjustment range of superheat degree: 3.5 °C 5, Maximum test pressure ... -4.53.512.310600RFW22-5.06.522.919800 RF type expansion valve