| 摘要 |
PROBLEM TO BE SOLVED: To previously prevent an accident caused by the damage to the thermosensible disassembling part of a spinkler head by providing both with wrench engaging notches and with a stepped part to the frame of the sprinkler head for fitting a protective cover to protect the thermosensible disassembling part weak in impact at the time of execution of work or the like. SOLUTION: The frame of a sprinkler head in which a thermosensible disassembling part is equipped between a pair of arms 4, 4 is provided with a large diametric wrench engaging part 11 and a smaller diametric stepped part continued below thereto so as to be projected toward the outer circumference thereto. A bottomed cylindrical protective cover 13 is fitted to the stepped part, and at the time of execution of the work, the circumference of the thermosensible disassembling part such as a glass bulb 5 is covered with the protective cover 13 so as not to be damaged.
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