The SEU-OHE series electro-hydraulic control main valve is specially designed for longwall mines. It consists of solenoid for 4/3 way pilot valve and 3/2 way pilot cartridge valves of DN10, DN12, DN20 and etc. By controlling the direction change of the solenoid way pilot valve through the energization and de-energization of the electromagnet, the output fluid pressure is generated to control the direction change of the 3/2 way pilot valve in the main valve component. A manual button is provided on the solenoid way valve to enable manual operation during assembly or maintenance.