High-pressure fine water mist nozzles are typically made of 304 or 316L stainless steel to ensure corrosion resistance. The nozzle filter is made of stainless steel wire cloth. Some water mist nozzles use ceramic nozzles, which are resistant to high temperatures and wear.
Water mist nozzles must undergo rigorous performance testing, primarily focusing on flow rate, atomization angle, pressure resistance, particle size distribution, and sealing performance. Testing follows the national standard GB 5135.3-2003 Automatic Sprinkler Systems Part 3: Water Mist Nozzles and the public safety industry standard GA 33-1992 Performance Requirements and Test Methods for Water Mist Nozzles in Automatic Sprinkler Systems. Water mist nozzles are fire protection products and require mandatory certification (CCC certification) before they can be sold on the market.
