Sand Separator is a filtration device used in low-volume irrigation. Which action does it perform?

• A. Separates various particulate from the water by spinning the raw water at high velocities
• B. Filters down to 75 micron
• C. Uses stacked, flat rings to filter
• D. Filters down to 1 micron

Answer: (A)

Sand separators use centrifugal separation to remove sand and other coarse particulates from irrigation water. As water enters, it is spun at high velocity, causing heavier particles to move outward and settle in a waste chamber while cleaner water exits downstream. This action works on density and inertia rather than passing water through a fixed pore size, so it isn’t rated by a micron size. That’s why it doesn’t filter down to specific micron ratings like 75 or 1 micron, and it doesn’t rely on stacked rings as a filtering mechanism. In low-volume systems, this separation protects emitters by removing sand before it reaches the irrigation lines.