Brand: Hunter Industries SKU: PGJ-04 Product Overview The Hunter PGJ-04 is a compact 4-inch pop-up gear-drive rotor designed to bring rotary-stream coverage to landscape areas that are often served by spray sprinklers. Its adjustable 40- to 360-degree arc allows the same rotor to water corners, edges, irregular turf sections, or full-circle areas. The 1/2-inch female NPT inlet and narrow body make it suitable for smaller residential and light-commercial zones where a larger rotor would provide more radius or flow than the site requires. Hunter’s current PGJ platform includes eight nozzle choices and a standard factory-installed 2.0 nozzle. Depending on nozzle selection and operating pressure, Hunter publishes an approximate radius range of 15 to 34 feet and a flow range of 0.42 to 4.3 GPM. Recommended pressure is 30 to 50 PSI, with an operating range of 20 to 100 PSI. The approximately 14-degree nozzle trajectory helps keep the stream lower than many larger rotor models. Through-the-top arc adjustment, the QuickCheck arc mechanism, and a headed/slotted radius setscrew support field setup using a Hunter wrench or flat-blade screwdriver. The standard PGJ-04 model does not include the optional drain check valve unless the model designation includes the appropriate V option. Hunter identifies a compatible check valve option for holding back up to 7 feet of elevation, while a separate HCV check valve can address greater elevation differences where properly applied. Key Features 4-inch pop-up compact gear-drive rotor Adjustable 40°–360° arc Approximate 15- to 34-foot radius range Approximate 0.42- to 4.3-GPM flow range Eight compatible nozzle choices Standard factory-installed 2.0 nozzle Recommended pressure range of 30–50 PSI Approximately 14° nozzle trajectory 1/2-inch female NPT inlet QuickCheck and through-the-top adjustment Common Uses Small and medium residential lawns Narrow turf areas requiring rotary coverage Zones combining smaller and larger compatible rotors Replacing a compatible Hunter PGJ-04 rotor Compatibility and Installation Notes Select the nozzle according to required radius, flow, spacing, and available pressure. Connect to a compatible 1/2-inch swing joint or threaded fitting. Install level with finished grade and provide clearance for the full 4-inch riser. The base PGJ-04 designation does not identify the optional drain check valve. Use the Hunter rotor tool or flat-blade screwdriver according to the current adjustment instructions. Frequently Asked Questions Can the PGJ-04 operate full circle? Yes. Its arc adjusts from 40 degrees through a 360-degree full-circle pattern. Does this model include a check valve? The base PGJ-04 designation does not identify the optional V check-valve configuration. Confirm the exact model when low-head drainage control is required. How is the PGJ different from the PGP? The PGJ uses a smaller 1/2-inch inlet and lower published radius and flow range, making it better suited to smaller landscape areas. Why Buy from Big Frog Supply? Big Frog Supply carries Hunter PGJ rotors, nozzles, adjustment tools, swing joints, check valves, and irrigation repair components.
