Hunter I-25 4 in. Pop-up Rotor with Check Valve

The Hunter I-25 4 in. pop-up rotor delivers commercial-grade coverage and reliability for large turf and landscape applications. Designed for easy arc adjustment and long service life, the I-25 combines a compact footprint with powerful performance and multiple installer options.

• Adjustable arc & quick adjustment: 50°–360° with QuickCheck for fast, accurate arc setting.
• Nozzle versatility: 11 available nozzles; five standard nozzles included for flexible radius and precipitation control.
• Performance & pressure range: Radius 37'–71'; flow 3.8–31.5 GPM; recommended operating pressure 40–100 PSI; precipitation ≈0.4 in/hr.
• Built-in check valve: Prevents low-head drainage and helps preserve turf on slopes; available on check-valve models.
• Riser & material options: Standard plastic riser or optional stainless-steel riser; 1" female inlet and HSJ-1 swing joint compatible.
• Durability & warranty: Non-strippable drive mechanism, patented automatic arc return, and a 5-year limited warranty for commercial use.

Color-coded nozzles simplify selection and maintenance; the non-strippable drive resists damage from manual rotation and the patented automatic arc return restores the original pattern if disturbed. Use the included nozzle charts and performance tables to match precipitation rates and spacing for efficient coverage.

Choose the I-25 variant that matches your project — 4 in. or 6 in. pop-up height, standard or stainless riser, and optional high-speed rotation or reclaimed water ID. Consult the product cutsheet and installation card for nozzle charts, installation details, and maintenance recommendations before installation.