Toro’s Precision Series PressureRegulated 4 in popup sprinklers are the most complete and efficient spray body and nozzle available With the builtin pressure regulator, this 8 ft to 15 ft quarter circle spray radius maintains an outlet pressure at a steady 30 PSI, eliminating water misting and fogging at the nozzle In addition to assisting homeowners in managing water use, Precision Series sprinklers and nozzles also eliminate runoff This leads to reduced water bills while maximizing irrigation efficiency