Hunter Sprinkler PROS04CV Pro-Spray 4-Inch Pop-Up Sprinkler with Drain Check Valve Pro-Sprays are compatible with Pro Adjustable Nozzles, Pro Fixed Nozzles and MP Rotators All models also include a user-friendly pull-ring flush cap to keep debris and clogging to a minimum The Hunter Pro-Spray sprinkler head is compatible with all industry standard female nozzles offering a high degree of flexibility