Water spray nozzle is a nozzle that decomposes water flow into fine water droplets under certain pressure by using the principle of centrifugation or impact. According to the structure, the spray nozzle can be divided into centrifugal atomization spray nozzle and impact spray nozzle.
 
The centrifugal atomization of water mist nozzle type consists of nozzle body and vortex device. It is composed of Type A and Type B. The inlet and outlet of Type A water mist nozzle form a 90 ° angle. After installation, the water outlet direction of the nozzle can be adjusted within a certain range. The outlet and inlet of type B water mist nozzle are in a straight line, completely fixed, and cannot be adjusted after installation.
 
The impact-type spray nozzle is composed of a splash plate, a diversion cone, a frame and a filter screen. The water spray nozzle type pressure water flows through the outer splash plate and disperses into uniform conical water mist in the set area.
 
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The layout of the spray nozzle can be rectangular or rhombic. When arranged into a rectangle, the distance between the spray nozzles shall not be greater than 1.4 times the radius of the bottom circle of the spray cone; When arranged in a rhombus shape, the distance between the spray nozzles should not be greater than 1.7 times the radius of the bottom circle of the spray cone.
Sprinklers of different specifications shall have a certain number of spare parts, which shall not be less than 1% of the total installed capacity, and each spare part shall not be less than 5.