2 of the valve body 10 and a closed fourth oil port a the three position four way solenoid directional valve 10 4 has the following three operating positions in a first operating position the first oil port t the second oil port p the third oil port b and the fourth oil port a are all closed in a second operating position the first oil port t communicates with the fourth oil port a and the second oil port p communicates with the third oil port b and in a third operating position the first oil port t communicates with the third oil port b and the second oil port p communicates with the fourth oil port a other structures and operating principle of the fourth embodiment are substantially the same as that of the third embodiment which will not be repeated herein for simplicity reference is made to fig6 which is a hydraulic schematic diagram of a hydraulic control valve according to a fifth embodiment of the present application since the directional valves of the third and fourth embodiments in the hydraulic control valve function to connect or disconnect the second oil port c 1 and the third oil port c 2 of the valve body 10 and to connect or disconnect the third oil port c 2 and the fourth oil port t a two position two way solenoid directional valve 10 2 and a third stop valve 10 7 can be used to replace the three position three way solenoid directional valve 10 3 or.