What are common filter screen sizes used in irrigation, and what is their purpose?

What are common filter screen sizes used in irrigation, and what is their purpose?

• A. 50 to 70 mesh; increase flow
• B. 120 to 200 mesh; remove debris to protect emitters and sprinklers
• C. 300 to 500 mesh; sterilize water
• D. 5 to 10 mesh; prevent clogging

Answer: (B)

Choosing the right filter screen size for irrigation means filtering out debris large enough to clog emitters and sprinklers while keeping enough flow through the system. A 120 to 200 mesh screen is common because it captures most sand, silt, and organic debris without overly restricting flow, providing solid protection for emitters and sprinklers. Coarser screens, like 50 to 70 mesh, let more debris through and raise clogging risk; much finer screens, such as 300 to 500 mesh, unnecessarily restrict flow and don’t sterilize water, which isn’t achieved by filtration. Very coarse screens, like 5 to 10 mesh, would fail to prevent clogging altogether.

Choosing the right filter screen size for irrigation means filtering out debris large enough to clog emitters and sprinklers while keeping enough flow through the system. A 120 to 200 mesh screen is common because it captures most sand, silt, and organic debris without overly restricting flow, providing solid protection for emitters and sprinklers. Coarser screens, like 50 to 70 mesh, let more debris through and raise clogging risk; much finer screens, such as 300 to 500 mesh, unnecessarily restrict flow and don’t sterilize water, which isn’t achieved by filtration. Very coarse screens, like 5 to 10 mesh, would fail to prevent clogging altogether.