| 摘要 |
PROBLEM TO BE SOLVED: To highly accurately, simply, and easily position a nozzle with respect to a nozzle fitting part of a head body.SOLUTION: A water spray head 18 for discharging fire-fighting water to a water discharge object space in a tunnell in case of fire is so configured that an ultralong-range nozzle 28, a long-range nozzle 30 and a short-range nozzle 32 are screwed in and fixed in screw holes provided on an ultralong-range nozzle fitting part 22, a long-range nozzle fitting part 24 and a short-range nozzle fitting part 26 of a head body 20 by screw parts provided continuously from a hexagonal head bolt surface. A positioning datum level of a prescribed shape is formed on a nozzle fitting part side of the head body 20. At a final tightening position where the screw parts of the nozzle side are screwed in and tightly fixed to the screw holes of the head body 20, the prescribed hexagonal bolt surface having a nozzle positioning surface display marker displayed thereon is positioned on the positioning datum level of the nozzle fitting part. |
