| 摘要 |
PROBLEM TO BE SOLVED: To provide a solenoid valve possible to be switched either to an internal pilot type electromagnet valve or an external pilot type electromagnet valve. SOLUTION: A large-diameter first piston 23 and a small-diameter second piston 24 are provided in both ends of a main valve shaft 22, and pilot fluid from a first pilot solenoid valve is supplied to the first piston 23 through a first pilot pressure output path, and pilot fluid is supplied to the second piston 24 through a second pilot pressure output path 61. This solenoid valve works as an internal pilot type by sealing an external pilot communication hole 66, and works as an outer pilot type by sealing an internal pilot communication hole 64. COPYRIGHT: (C)2008,JPO&INPIT
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