Hunter Ultra PGP-04 4 inch Pop-Up Adjustable Arc Rotor (5 Pack)The PGP Ultra takes the foundation of the best-selling PGP Rotor and raises the bar with a variety of new features developed over three decades of research, customer feedback, and lab testing. Among the most notable improvements of the PGP Ultra is its non-strippable drive and automatic arc return. These two features work to allow the turret to be turned without causing damage, and return the turret to its original arc regardless of where it is turned. Other advanced features include 34 nozzle options with several radius choices, and a headed slot and set screw. The diversity of the PGP Ultra offers system installers an array of efficient options on any site.Features / Benefits Models: 4" Arc setting: 50 to 360 degrees Factory installed rubber cover Through-the-top arc adjustment Quick check arc mechanism Water lubricated gear-drive Includes: 1 adjustment tool per order, Operating Range Radius: 17 to 47 Flow rate: 0.36 to 14.8 GPM Recommended pressure range: 25 to 70 PSI Operating pressure range: 20 to 100 PSI Precipitation rates: 0.4 in/hr approx. Nozzle trajectory: Std = 25 degrees, Low angle = 13 degreesDimensions Overall Height: 7-1/2" Pop-up Height: 4" Exposed Diameter: 1-3/4" Inlet Size: 3/4" female NPT