| 摘要 |
PROBLEM TO BE SOLVED: To provide a remote controller for a corporation cock capable of restoring the accident of a water leak in a branch pipe or the like without being accompanied by local suspension of water supply so that the corporation cock can be anytime stopped without resulting in operating impossibility due to rust, flooding, ground pressure or the like even if years elapse. SOLUTION: The corporation cock 2 is fixed to a main 1 of waterworks, the branch pipe 33 is extended in a site from the corporation cock, and in a water-supply system providing a straight stop valve 35, a water meter 36 or the like to the front end of the branch pipe, a gear 13 is fixed to a pin bar 11 projected from the corporation cock, pistons 20 and 21 are provided to both end sections, a spindle 16 forming a rack pinion 17 engaged with the gear in the intermediate section is provided inside of cylinders 22 and 23 in a movable manner, at the same time, a four-way switching valve 38 is provided on an operating box 34 formed in the site, a pair of pressure-resistant tubes 44 and 45 are extended to the operating box from the cylinders to connect the front ends of the tubes to the four-way switching valve, and hydraulic pressure is applied to the pistons to move the spindle back and forth to enable the corporation cock to open and close. COPYRIGHT: (C)2004,JPO&NCIPI
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