Which nozzle pattern deposits spray in a circle with no droplets in the center?

Which nozzle pattern deposits spray in a circle with no droplets in the center?

• A. Hollow-cone pattern
• B. Solid-stream
• C. Flat-fan
• D. Full-cone

Answer: (A)

Understanding how nozzle spray patterns shape droplet placement helps you predict coverage on turf. A hollow-cone nozzle releases spray such that the liquid exits around the circumference, forming a circular spray pattern with a central void. That ring-shaped distribution is due to how the liquid is split to flow along the outer portion of the cone rather than through the center, so you get a circle with little to no spray in the middle. This makes it the best fit for a pattern described as depositing spray in a circle with no droplets in the center. The other patterns create different shapes: a solid-stream produces a concentrated jet along a single path, not a circle; a flat-fan sprays a wide, flat sheet across a swath, not a ring; and a full-cone fills the entire circle with droplets, including the center. In practice, using hollow-cone appropriately—often with overlapping passes—helps achieve even edge-to-center coverage while leveraging the hollow center appearance.

Understanding how nozzle spray patterns shape droplet placement helps you predict coverage on turf. A hollow-cone nozzle releases spray such that the liquid exits around the circumference, forming a circular spray pattern with a central void. That ring-shaped distribution is due to how the liquid is split to flow along the outer portion of the cone rather than through the center, so you get a circle with little to no spray in the middle. This makes it the best fit for a pattern described as depositing spray in a circle with no droplets in the center.

The other patterns create different shapes: a solid-stream produces a concentrated jet along a single path, not a circle; a flat-fan sprays a wide, flat sheet across a swath, not a ring; and a full-cone fills the entire circle with droplets, including the center. In practice, using hollow-cone appropriately—often with overlapping passes—helps achieve even edge-to-center coverage while leveraging the hollow center appearance.