| 摘要 |
A valve opening/closing handle lock mechanism provided in a valve having a manually operated valve opening/closing handle ( 1 ) is capable of maintaining the security of the valve by preventing the valve from being opened or closed by accident or with malicious intent after completion of a proper opening/closing operation of the valve by means of the handle ( 1 ). The handle lock mechanism comprises a locking cap ( 4 ) mounted on the handle ( 1 ). The locking cap ( 4 ) functions to prevent the handle ( 1 ) from being operated, extends from the handle ( 1 ) to a handle mount portion ( 3 ) of the valve so as to cover the corresponding portion of the valve with the locking cap ( 4 ), and is provided with: an opening ( 5 ) through which an end portion of the handle ( 1 ) passes outward; or, a longitudinal groove through which the end portion of the opening/closing handle ( 1 ) slidably passes outward.
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