| 摘要 |
PROBLEM TO BE SOLVED: To provide a flow control device into which a load sensitive valve- spool can be incorporated even in a flow control device employing O ring type piping-connection structure and which thereby indicates a high energy saving effect. SOLUTION: A load sensitive valve-spool 9 is slidably fitted in a connector 5 formed so that O ring type piping-connection work is possible. A throughhole 6 is formed of a valve accommodating part 6a, a small diameter part 6b, and a delivery port 6c in sequence fro its base end. Between the small diameter part 6b and the delivery port 6c, a sealing face 6d with a R (round) shape is formed. Between the valve accommodating part 6a and the small diameter part 6b, locking ring 6e is projected toward the axis of the through hole 6. The spool 9 can be moved in response to load pressure so that it is positioned between A position and B position. When the load pressure is low, the spool 9 is positioned in A position, and when the load pressure is high, the spool is positioned in B position since the spool abuts on the locking ring 6e. |
