| 摘要 |
A control valve is provided to allow a user to recognize the operation state and current situation of the control valve of a valve driving apparatus easily. A control valve comprises a body(10), a movable magnet stick(20), a spring(30) and a holder(40). The body(10) is installed at the lower portion of the control valve. The body(10) has a space section(12) formed at the upper center portion thereof, a groove(14) formed in the outer peripheral surface of the space section(12), and a receiving section formed at the lower center portion thereof. The movable magnet stick(20) is received in the space section(12) and has a stepped portion(22). The spring(30) is interposed between the space section(12) and the stepped portion(22). The holder(40) is received in the receiving section and has a non-contact sensor(50) inside.
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