| 摘要 |
<p>A control valve capable of suppressing the number of external pipes connected to a hydraulic remote control valve, wherein the control valve (1), which is operated by the hydraulic remote control valve (24) so as to control hydraulic cylinders (2) and (2'), is provided with; in one spool cover (26), oil paths (27, 27') communicating with hydraulic ports (25, 25') as the connection ports for pilot lines (24a, 24c), a shuttle valve (28) which selects a pressure on the high pressure side from among the pilot pressures led into these oil paths (27, 27'), and an oil path (29) which leads a pressure selected by the shuttle valve (28); and, in the other spool cover (32), oil paths (33, 33') communicating with hydraulic ports (31, 31') as the connection ports for pilot lines (24b, 24d), a shuttle valve (34) which selects a pressure on the high pressure side from among the pilot pressures led into these oil paths (33, 33'), and an oil path (35) which leads a pressure selected by the shuttle valve (34).</p> |
