| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of improving responsiveness of a solenoid valve other than such method that enlarges a generation power of solenoid causing cost increase. SOLUTION: The responsiveness of the solenoid valve is improved, without enlaging the generation power of solenoid by composing the axis part of the spool valve from the material of lower specific gravity than that of the valve part and by making the weight of a spool valve light. Furthermore, inexpensive manufacture can be realized by the integral molding method, composing the axis of the above spool valve from resin and the valve part from metal.
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