The structure of the four-way reversing valve

Four-way reversing valve is mainly composed of pneumatic directional control valve spool (main) valve, electromagnetic directional valve (control valve) and capillary. Within the main wholesalemotor.blogspot.com valve is electric motor fan cover composed of slide block, piston valve core, the main valve body ends for hole can make both ends of the capillary and connect body space, slider respectively fixed on both ends with ac motor the pistons, piston on both sides of the space through the vent in the piston is same. Control valve consists of body and electromagnetic lamination coil. The body contains type needle valve core. Between the main valve and control valve has three (or four) capillary is linked together, form the whole four-way reversing valve.