What is the purpose of a nozzle screen?

• A. To reduce or prevent clogging
• B. To increase spray velocity
• C. To change the spray color
• D. To alter droplet size

Answer: (A)

Screens on a nozzle act as a filter to keep debris from entering the tiny passages that create the spray. Particles from the solution or the environment can clog the nozzle, causing changes in spray pattern, uneven flow, or reduced flow rate. By catching dirt, sand, or dried residue, the screen helps keep the nozzle clear and maintains a consistent spray and uniform coverage. Regular cleaning or replacement is important because a clogged screen can lead to reduced flow and altered droplet behavior. The screen isn’t meant to boost velocity, change color, or directly alter droplet size; those characteristics are set by the nozzle design, the solution, and the operating pressure. Its main job is protective filtration to minimize clogging and keep application steady.