Rainbird Rotary Nozzle Half Circle Pattern, 17'-24' 17-24 ft half-circle pattern rotary nozzle Low precipitation rate - 0.60 in/hr (15,2 mm/hr) - reduces run-off and erosion Multiple, rotating streams uniformly distribute water throughout the radius range Matched precipitation rate across radii and pattern simplify the design process With approximately 60% less flow than conventional spray nozzles, Rotary Nozzles allow more heads per zone