K-Rain RPS75 4-Inch 3/4-Inch Gear-Drive Rotor

K-Rain RPS75 4-Inch 3/4-Inch Gear-Drive Rotor

Brand: K-Rain | SKU: RPS75

Product Overview

The K-Rain RPS75 is a 4-inch gear-driven rotor for residential and light-commercial turf zones. Its adjustable 40°–360° arc, interchangeable nozzles, and 3/4-inch female NPT inlet make it suitable for medium-size areas that need longer-range coverage than a standard spray head.

The riser is designed to fit compatible Hunter PGP and PGP Ultra cans, which can simplify some retrofit projects. Before ordering, confirm the existing rotor body, inlet size, available pressure and flow, required radius, and nozzle needs. Compatibility with those cans does not guarantee that a worn or damaged buried body should be reused.

Key Features

• Adjustable part-circle or full-circle coverage
• Includes standard and low-angle nozzle options
• Fixed right start with top arc adjustment
• Non-flushing wiper seal helps limit startup water loss
• Riser fits compatible Hunter PGP and PGP Ultra cans

Common Uses

• Residential lawns and larger landscape zones
• Light-commercial turf irrigation
• Replacing a compatible 3/4-inch rotor
• Retrofitting a compatible Hunter PGP or PGP Ultra can

Technical Specifications

• Model: RPS75
• Pop-Up Height: 4 in.
• Inlet: 3/4 in. female NPT
• Arc Adjustment: 40°–360°
• Radius: Approximately 22–51 ft.
• Flow Range: Approximately 0.7–8.3 GPM
• Operating Pressure: 20–70 PSI
• Nozzle Selection: 8 standard and 4 low-angle nozzles

Dimensions

• Pop-Up Height: 4 in.

Compatibility & Installation Notes

Select the nozzle using the available dynamic pressure and flow, not radius alone. Use matched precipitation and head-to-head spacing throughout the zone. If reusing an existing Hunter PGP or PGP Ultra can, inspect its threads, body, and seal area before installing the RPS75 riser.

Frequently Asked Questions

Will the RPS75 fit every Hunter rotor body?
No. K-Rain identifies compatibility with PGP and PGP Ultra cans; verify the installed model and condition first.

Are nozzles included with the RPS75?
Yes. The standard configuration includes eight standard and four low-angle nozzle options.

Can this rotor provide full-circle coverage?
Yes. Its arc adjusts from 40° through 360°.

Does the rotor include a check valve?
Do not assume a check valve is included unless the selected model specifically states that configuration.

Why Buy the K-Rain RPS75 Rotor?

Big Frog Supply clearly organizes the inlet size, radius, flow, arc, nozzle options, and retrofit notes so homeowners, contractors, and maintenance teams can compare the RPS75 with other rotor SKUs before ordering.