Directional-control-valve-connected body

A directional-control-valve-connected body comprising at least one supply-and-ejection block including a supply port for introducing a control fluid and an ejection port for ejecting a control fluid;

• a plurality of separate manifold blocks that are connected to the supply-and-ejection blocks, on each of which a pilot-operated directional control valve is mounted, and which relays a control fluid between said supply-and-ejection block and the pilot-operated directional control valves;
• and said plurality of pilot-operated directional control valves that are switched by a pilot fluid supplied from said supply-and-ejection block through each manifold block, wherein:
• Each supply-and-ejection block includes a pilot supply channel and a pilot ejection channel both in communication with each of said manifold blocks, a relay surface into which the pilot supply and ejection channels are opened, a pilot supply branch passage and a pilot ejection branch passage that branch from said supply and ejection ports, respectively, and that are opened into the relay surface, and a relay member detachably mounted on said relay surface so that said pilot supply and ejection channels are connected via the relay member to a port for supplying a pilot fluid and a port for ejecting a pilot fluid, respectively.