One kind of a spool type valve

One kind of spool valve type, belonging to the hydraulic valve spool, to solve the problem in the conventional hydraulic valve leak exists. The present invention includes a main valve, the first pilot valve, the second pilot valve, and the hand operating mechanism of the electrical connector, the first pilot valve and a pilot valve secured to the second surface of the main valve, the handheld housing means and a first pilot valve outside of the second pilot valve, and is connected and fixed on the main surface of the valve. The present invention integrates a plurality of functions with the valve member, the hydraulic system is simplified, the use of two ball as no leakage electromagnetic pilot valve, the main valve to change the control function, the inside of the main valve is integrated double check valve main valve member and the like, the double check valve into the high pressure oil to the main valve leak-free closed before entering the main valve, the pilot solenoid ball valve in combination and double check valve, ensuring no leakage function , reducing the additional power loss of the hydraulic system is running, and improve the safety of the hydraulic system operation.