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When a fire occurs, it is ejected in a predetermined direction to form a dense curtain of water droplets, play the role to prevent the spread of fire; when fire intervals between high-rise buildings or high-rise and low-rise buildings do not meet the requirements, or buildings near when there is greater risk of fire equipment, facilities, this nozzle is mounted adjacent windows, cornices and other parts, to enhance the walls, doors, windows, wood, fire and other fire shutter fire resistance, and can play a barrier effect .
| Type || model || Nominal Diameter (mm) || Connecting thread || Flow Coefficient |
| Water curtain nozzle || ZSTM || DN15 ||R2 1/2 || 23L / min |
| DN20 ||R2 3/4 || 38L / min |