Hunter 463408SP Red I25 Nozzle #18 Sprinkler nozzles, also referred to as spray nozzles, are an important, but often overlooked component of well-designed irrigation systems. The proper nozzle ensures accurate, even delivery of water in the pattern you need. Hunter offers an assortment of nozzle options for any lawn sprinkler system — adjustable, fixed, specialty nozzles, and revolutionary MP Rotator nozzles.