| 摘要 |
PROBLEM TO BE SOLVED: To provide a sprinkler head which solves the problem of a conventional sprinkler head that a sealing member to block a gap between a water introducing hole and a valve body is fit in the outer periphery of the valve body to cause a fear that the sealing member is bit in between the inside face of the water introducing hole and the valve body when falling down of the valve body. SOLUTION: The open side on the lower end side of the water introducing hole 3 is made larger and a step part 3a is formed inside. A flange part 8a to be engaged with the step part 3a is equipped on the lower end of the valve body 8. The seal member 3 is cramped between the flange part 8a and the step part 3a in the vertical direction. Coating of a fluororesin or a fluorine-containing resin is applied on the upper face of the flange part 8a in contact with the sealing member 9 to prevent adhesion of the sealing member 9. COPYRIGHT: (C)2004,JPO
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