· These precision brass nozzles are easily discernable, even from a distance, by their unique and attractive water pattern. · Mill cut part circle nozzles dramatically enhance performance offering two separate layers of water at different velocities, providing the ultimate in pattern uniformity and water conservation. · Optimal operational pressure is rated at 20 psi, (1.4 bar), substantially lower than other designs that require over pressurization to improve pattern performance. · Small uniform water droplets generated by the nozzle fall closer to the sprinkler providing an exceptionally consistent pattern and eliminate the need for conventional "head to head" spacing. · Industry standard threads allow these extended performance nozzles to be installed on most competitive manufactures of spray heads providing a quick and easy upgrade to existing systems. · Large inlet porting on 5520 -5524 nozzles allows more debris to pass through it offering superior contamination resistance in dirty water or reclaimed applications. · Single port brass nozzles can be easily cleaned with out risk of permanent damage and in many cases with out removing the nozzle from the head. · These nozzles provide the widest selection of any other matched precipitation family on the market today. 80 nozzles are available, offering seamless spacing transitions from 3 ft to 20 foot and flows ranging from 0.3 GPM to 7.5 GPM.