| 摘要 |
PURPOSE: A sprinkler system for moving the head of a sprinkler to an axial direction is provided to simply adjust the height of the head of the sprinkler and to obtain the superior diminution effect of the system with respect to the deformational behavior or vibration of a flexible joint. CONSTITUTION: A groove(21) is formed at the outer diameter side of a head tube(20) which is formed at one end of the head of a sprinkler. A multi-contact o-rings(22) with a plurality of contact lines is inserted into the groove. A stopper(23) and a male screw(24) are formed at the another outer diameter of the head tube. The male screw is engaged with the female screw of a slip nut(25). A step(27) is formed at another end of the slip nut. The slip nut is integrated with the head of the sprinkler.
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