| 摘要 |
PROBLEM TO BE SOLVED: To provide a flow control valve capable of preventing erosion of a spool while suppressing imbalance of pressure to be applied to the spool.SOLUTION: A flow control valve 102 for controlling a flow rate of an operation fluid from a pump 100 includes: a spool 20; a spool housing hole 10a; a first pressure chamber 23 and a second pressure chamber 24 formed at both ends of the spool; a biasing member 25 for biasing the spool; a bypass port 27 which guides the operation fluid to a bypass channel 40 from the first pressure chamber; and a facing recess 29 formed of a plurality of holes 29a, recessed in a position facing the bypass port 27;. The spool has an annular groove 20b and a land part 20a which is formed between the annular groove and the first pressure chamber 23, and comes into sliding contact with an inner circumference of the spool housing hole. The land part has an annular land groove 20c. A diameter of the hole of the facing recess 29 is smaller than a width of the land part, and is larger than the width between the first pressure chamber 23 and the land groove 20c on the land part. |
