| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve workability by providing actuator ports communicated with an actuator and inserting a spool having notch sections between the actuator ports and feed ports. SOLUTION: A spool hole 75 penetrated across communicating passages 25A, 25B, feed ports 65A, 65B, and a load detecting port 34 respectively is formed nearly in parallel with a main spool hole 52 at the position between a check valve 35 and the main spool 51 of a direction selector valve 20 on a block 50, and a pressure compensating valve 21 is arranged in the spool hole 75. Notch sections 84A, 84B communicating the feed ports 65A, 65B and actuator ports 83A, 83B are formed. The pressure compensating valve 21 has a spool 76 slidably inserted into the spool hole 75. Only one spool hole 75 is enough for sliding the spool 76, machining man-hours are reduced, and workability can be improved.</p> |
