Brand: Hunter Industries SKU: I25-04
Product Overview
The Hunter I25-04 is a 4-inch pop-up commercial gear-drive rotor with a plastic riser, 1-inch female NPT inlet, adjustable 50- to 360-degree arc, and a factory-installed drain check valve. Although the existing Shopify product title describes this model as full circle, Hunter’s current I-25 design combines adjustable part-circle and non-reversing full-circle operation in one rotor. This allows the same model to be configured for landscape edges, corners, broad turf areas, or complete 360-degree coverage.
The I-25 platform is designed for larger residential, commercial, municipal, and recreational turf zones. Depending on the installed nozzle and operating pressure, Hunter publishes a radius range of approximately 37 to 71 feet and a flow range of 3.8 to 31.5 GPM. Recommended and operating pressure is 40 to 100 PSI, and the standard nozzle trajectory is 25 degrees. Color-coded nozzle options allow the installer to match the rotor output to the available zone capacity and required spacing.
Automatic arc return helps restore the programmed watering pattern if the turret is forced out of position, while the non-strippable drive mechanism helps protect the internal gearing. The QuickCheck arc mechanism supports through-the-top adjustment, and the standard check valve is designed to hold back up to 10 feet of elevation to reduce low-head drainage after the zone shuts off. Nozzle-package contents can vary, so confirm whether a specific nozzle is included before ordering.
Key Features
- 4-inch pop-up plastic riser
- Adjustable 50- to 360-degree arc
- Part-circle and full-circle operation in one model
- Automatic arc return
- Non-strippable, vandal-resistant drive mechanism
- QuickCheck through-the-top arc adjustment
- Standard drain check valve for up to 10 feet of elevation
- 1-inch female NPT inlet
- Approximate 37- to 71-foot radius range
- Approximate 3.8- to 31.5-GPM flow range
Common Uses
- Commercial and municipal turf areas
- Parks, athletic fields, and large lawns
- Landscape zones requiring part- or full-circle coverage
- Replacing a compatible 4-inch Hunter I-25 rotor
Compatibility and Installation Notes
- Select the nozzle according to required radius, flow, spacing, and available pressure.
- Use a compatible 1-inch swing joint or threaded connection.
- Install the rotor level with finished grade and provide clearance for the full 4-inch pop-up.
- Confirm the irrigation zone can supply the selected nozzle flow at the required pressure.
- Use Hunter adjustment procedures for arc setup and nozzle installation.
- Confirm nozzle-package contents if a specific nozzle is required.
Frequently Asked Questions
Is the I25-04 a full-circle-only rotor?
No. Hunter’s current I-25 platform supports an adjustable arc from 50 degrees through a non-reversing 360-degree full-circle pattern.
Does the I25-04 include a check valve?
Yes. The standard check valve is designed to help prevent low-head drainage for elevation differences up to 10 feet.
What determines the final radius and flow?
The installed nozzle, operating pressure, spacing, and field adjustment determine actual performance.
Why Buy from Big Frog Supply?
Big Frog Supply carries Hunter I-25 rotors, replacement nozzles, swing joints, adjustment tools, valves, and commercial irrigation repair components.
