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Typically composed of spray nozzle sprinkler systems and water supply network, deluge valve, detectors, etc. It can be under a certain water pressure, the rapid decomposition of water into tiny droplets of water sprayed directly covering protection the outer surface of the object, prompting the vapor dilution and distribution, fire suppression, reduce fire damage, reducing the risk of explosion, so to extinguish solid fire, flammable liquid fires and electrical fires.
| Type || model || Nominal Diameter (mm) || Connecting thread || Flow Coefficient |
| Spray nozzle || ZSTW || DN15 ||R2 1/2 || 23L / min |
| DN20 ||R2 3/4 || 26L / min |