Patent ID: 8613295

Claim:
A combined hydraulic control valve comprising a modularized pilot control valve assembly, a modularized two-way cartridge valve control assembly, and a 2 port plate connection valve block body, wherein the modularized pilot control valve assembly and the modularized two-way cartridge valve control assembly are connected to the valve block body to constitute the combined hydraulic control valve; there are at most two mounting holes in the valve block for inserting and installing a valve seat main stage of the cartridge valve control assembly, and on two sides of the valve block body there are at most two mounting surfaces used for flanged control cover plates of the cartridge valve control assembly; the pilot control valve assembly is mounted on the upper mounting surface of the valve block body and fastened through bolts; and the two-way cartridge valve control assembly consists of the valve seat main stage and the control cover plate mounted at a side of the valve seat main stage.