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Because the nozzle is designed to work under a variety of different spray conditions, a nozzle suitable for the needs is selected in order to achieve spray performance in use. The characteristics of the nozzle are mainly reflected in the spray type of the nozzle, that is, the shape of the liquid when it leaves the nozzle mouth and its operating performance. The first name of the nozzle is divided into fan, cone, liquid column flow (ie jet), air atomization, and flat nozzle based on the spray shape. The cone nozzle is divided into hollow cone and solid cone.