Rainbird Half Circle Pattern Rotary Nozzle Type: Rotary nozzle Features: Pressure range: 20-55 psi Spacing: 13' to 24' 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. Maintains highly efficient performance throughout the 20-55 psi pressure range, with no misting or fogging at high pressures.

Newegg > OG - Nozzles & Wands

PriceZombie > Lawn & Garden

Rain Bird 18RNH matched precipitation rate high efficiency rotary sprinkler nozzle, 180 half circle pattern with adjustable 13 to 18 spray distance. From the Manufacturer: Rain Bird RN Series Rotating Nozzles deliver gentle, visually appealing streams of water at approximately 60% less flow than conventional spray nozzles. Maintains highly efficient performance throughout the 20 to 55 PSI pressure range, with no misting or fogging at high pressures. Ideal for slopes and hillsides, the RN nozzle's highly-efficient water delivery reduces soil erosion and runoff, saving water and money. Water and nutrients penetrate the soil helping maintain a healthy landscape. Same precipitation rate, and thread size as conventional Rain Bird spray nozzles allows for easy conversion. Engineered to operate at lower pressure while still delivering precise even coverage; the perfect solution if you experience low water pressure. Matched precipitation rate across radii and pattern simplify the design process. This version of the 18RN produces a half circle pattern; also available in full (18RNF) , and quarter circle (18RNQ). Rain Bird The Intelligent Use of Water"