| 摘要 |
PROBLEM TO BE SOLVED: To provide a fire-fighting nozzle capable of discharging water further by straightly spouting water without splashing water around. SOLUTION: This fire-fighting nozzle is provided with an inner cylinder 1 attached on the top end of a fire-fighting hose 50 while having a valve rod holding part 2 on an internal channel 7, an outer cylinder 3 externally fitted to freely spirally move forward and backward from the top end side of the inner cylinder 1 while having a valve seat part 4 on the inner peripheral surface, a valve rod 5, which protrudes the top end, attaching a base end to the valve rod holding part 2 of the inner cylinder 1, and a main body 6 of valve provided on the top end of the valve rod 5 so as to be abutted to the valve seat part 4 of the outer cylinder 3. Besides, a core member 21 formed to reduce the diameter forward is added on the top end face side of the main body 6 of valve, a water pouring cylinder member 23 formed to reduce the diameter forward is added while surrounding the core member 21 and further, a channel 24 for direct spray is formed between the water pouring cylinder member 23 and the core member 21.
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