Hunter - I-20 - 4" Pop-Up Plastic Riser, Adjustable Arc With Check Valve

The Hunter I-20 rotor delivers versatile, high-efficiency irrigation for residential and commercial landscapes. Engineered for performance and durability, this rotor features a non-strippable drive, automatic arc return, and a built-in check valve for superior water-saving operation.

Key Features:

• Adjustable arc from 50° to 360° for full or part-circle coverage
• Non-strippable, vandal-resistant gear drive ensures long-lasting performance
• Automatic arc return protects against damage from over-rotation
• FloStop® control allows individual shutoff for easy maintenance
• Factory-installed check valve prevents low-head drainage (up to 10 ft elevation)
• Compatible with 34 interchangeable nozzles, including MPR, standard, low-angle, and short radius
• Water-lubricated gear-drive with through-the-top arc adjustment

Construction & Durability:

• High-impact plastic body with a factory-installed rubber cover
• Headed and slotted set screw for quick arc changes with a screwdriver or Hunter wrench
• Designed to withstand harsh conditions and reduce maintenance time

Performance & Functionality:

• Radius: 17' to 46'
• Flow rate: 0.36 to 14.8 GPM
• Operating pressure: 20–100 PSI (recommended 25–70 PSI)
• Precipitation rate: approximately 0.4 in/hr
• Nozzle trajectory: Standard = 25°, Low Angle = 13°
• FloStop® flow shutoff and automatic arc return improve maintenance efficiency

Ease of Installation & Use:

• Tool-free nozzle changes; slotted screw for arc/radius adjustment
• Quick check arc mechanism for rapid field inspection
• Factory-assembled with check valve and rubber cover for out-of-the-box use

Technical Specifications:

• Operating Pressure Range: 20–100 PSI
• Recommended Pressure: 25–70 PSI
• Flow Rate: 0.36–14.8 GPM
• Spray Radius: 17'–46'
• Arc Adjustment Range: 50°–360°
• Pop-Up Height: 4"
• Thread Type: Female-threaded
• UV-Resistant Components: Yes
• Nozzle Options: 34 total (Standard, Low Angle, Short Radius, MPR)

Installation & Application:

• Recommended Uses: Residential, commercial, parks, sports fields, mixed landscape types
• Installation Method: In-ground, connects to standard PVC or poly tubing systems
• Soil & Climate Suitability: Effective in sandy soil, sloped areas, and high-sun environments

Compatibility & Optional Accessories:

• Compatible with all Hunter standard and MPR nozzles
• Optional Hunter wrench for arc/radius adjustment
• Compatible with reclaimed water ID caps