Hunter Sprinkler Head Guide: PGP Rotors, Pro-Spray Bodies & MP Rotator Nozzles

Hunter's sprinkler lineup splits into two families: rotors, which throw single rotating streams 15–50 feet for lawns, and spray bodies with nozzles, which cover 4–35 feet for beds, parkways, and small turf areas. Matching the right head to each zone is the difference between an even, efficient system and dry spots.

Rotors: PGP Ultra and I-20

The PGP Ultra is the best-selling rotor in the world for a reason: 16–46 ft radius, a huge nozzle selection, and a non-strippable drive. It's the default choice for residential lawns.

The I-20 is the step-up: same footprint but with a stainless-steel riser option, factory-installed check valve, and drain-check seals — specify it on slopes, high-traffic turf, or light commercial work. (If you've seen references to a "Hunter I-20" or "hunter 120 sprinkler head", they're the same product — the model is the letter I followed by 20.)

Set rotor spacing head-to-head: each rotor should throw far enough to hit the next head. Mixing rotors and sprays on one zone is the most common DIY mistake — their precipitation rates differ by 3–4×, so the same run time drowns one area and starves the other.

Spray bodies: Pro-Spray and PRS40/PRS30

The Pro-Spray body comes in 2", 4", 6", and 12" pop-up heights. The PRS40 version regulates pressure at the head to 40 PSI — the sweet spot for MP Rotator nozzles — and the PRS30 to 30 PSI for standard spray nozzles. Pressure regulation pays for itself: every 5 PSI over spec wastes roughly 6–8% more water as misting.

MP Rotator nozzles

The MP Rotator screws onto any spray body and delivers multiple rotating streams at a low 0.4 in/hr precipitation rate. Use the MP1000 (8–15 ft), MP2000 (13–21 ft), or MP3000 (22–30 ft) by throw distance. Because all MP models apply water at the same matched rate, you can mix them freely on one zone — ideal for irregular beds and narrow side yards, and the low application rate eliminates runoff on clay soils and slopes.

Which to buy

• Open lawn over 25 ft wide: PGP Ultra (or I-20 for slopes/commercial).
• Beds, strips, and turf under 25 ft: Pro-Spray PRS40 body + MP Rotator nozzle.
• Replacing a broken head: match the existing family and nozzle so precipitation stays even across the zone.

Shop the full range in Sprinklers & Valve Parts, or see Drip Irrigation for beds that would rather not be sprayed at all.