| 摘要 |
PROBLEM TO BE SOLVED: To provide a flow control device which can freely change the characteristics of flow supplied. SOLUTION: A housing is formed with a pump port 2, a tank port 3, an actuator port 7, and a spool hole 6 whereinto a spool 5 is slidably built. An orifice 11 is provided in a passage communicating the actuator port 7 with a spool hole 4. The housing has therein a spring 13 which exerts spring force to the spool 5 from an opposite side of the actuator port 7, and a pilot passage 14 which communicates a spring camber 12 enclosing this spring 13 with the actuator port 7. A passage 22 is provided to connect the spring chamber 12 to a tank T and a proportion solenoid valve 23 is built in this passage 22. |
