Hydraulic valve apparatus

A hydraulic valve apparatus that is interposed between a hydraulic device and a hydraulic pump and controls supply of oil from the hydraulic pump to the hydraulic device by operating a spool provided in a valve body, wherein

• the valve body includes,
• two pump oil passages connected to separate hydraulic pumps via pump ports,
• a plurality of linear motion spools separately provided corresponding to a plurality of linear motion hydraulic devices, and
• rotation spools corresponding to rotary hydraulic devices,
• the two pump oil passages are provided in the valve body to be arranged side by side along a same direction,
• the pump ports are provided midway of each of the pump oil passages,
• the plurality of linear motion spools are connected to a portion located on one side of the pump ports in the pump oil passages,
• the rotation spools are connected to a portion located on another side of the pump ports in the pump oil passages, and
• the two pump oil passages are connected to each other via a merging-separating oil passage including a merging-separating switching valve at one end portion to which the plurality of linear motion spools are connected.