The Hunter® PGP® is the rotor that started it all — the original gear-drive that put the company on every irrigation truck in America. The PGP-ADJ is the adjustable-arc workhorse in the PGP family: a 4 in. pop-up body, 3/4 in. inlet, factory-installed rubber cover, twelve standard red nozzles in the box, and an arc that swings anywhere from 40° to a reversing full 360°. Drop it into any residential or light-commercial zone and it just runs.

Why Irrigation Pros Pick the PGP-ADJ

• Adjustable arc, 40°–360° — one head covers part-circle and full-circle zones; reverses at the full-circle stop so it sweeps both ways
• Patented 3-spring reversing mechanism — sharp, crisp arc reversal at both stops (competitors’ 2-spring designs slide softly through the stop)
• 27 nozzle options across three racks — 12 standard red (25° trajectory, 0.5–14.1 GPM) ship in the box; the 8-nozzle standard blue rack and 7-nozzle gray low-angle (13°) rack sell separately
• QuickCheck™ arc mechanism — fast-forward the turret to verify both stops without disturbing the setting
• Through-the-top arc adjustment — set arc wet or dry, with the rotor up or down, using the Hunter wrench through the rubber cover
• Factory-installed rubber cover — membrane-protected adjustment sockets keep dirt and string-trimmer chips out of the gear stack
• Heavy-duty stainless retraction spring — one of the strongest in its class, so the turret pops down clean every cycle
• Water-lubricated gear drive — silent rotation, no impact clatter, no extra lube to service
• Advanced pressure-activated wiper seal with anti-microbial agent — resists slime buildup that plagues lower-tier rotors
• Large dirty-water screen, serviceable in place — clear it without pulling the body
• Ratcheting riser stem — pull up the riser to realign the right (fixed) arc stop without unscrewing the cap
• Radius reduction up to 25% — trim throw with the hex-end set screw without swapping nozzles
• 2-year manufacturer warranty

Where It Shines

• Residential lawn zones up to ~52 ft throw radius where the budget can’t stretch to the PGP Ultra
• Light-commercial property maintenance accounts that need a reliable, repairable rotor — same Hunter nozzle library, same swing-joint inlet, same gear-drive feel
• Retrofits replacing tired impact rotors, Toro Mini-Eight, or Rain Bird 5000-series — the PGP-ADJ drops onto the same 3/4 in. inlet swing joint
• Crews already stocking the PGP family — common parts, common nozzles, one wrench works on every head in the truck

Specifications

• Model number: PGP-ADJ (Hunter SKU PGP-ADJ)
• Type: 4 in. pop-up gear-drive rotor, 3/4 in. female NPT inlet
• Pop-up height: 4 in. (10 cm)
• Overall body height: 7-3/8 in. (19 cm)
• Exposed body diameter: 1-3/4 in. (4 cm)
• Radius: 22–52 ft (6.7–15.9 m)
• Arc: adjustable 40° to 360° (reverses at full circle)
• Flow: 0.5–14.1 GPM across the full nozzle line
• Recommended pressure range: 25–70 PSI
• Operating pressure range: 20–100 PSI
• Precipitation rate: ~0.4 in/hr
• Nozzle trajectory: standard red & blue = 25°, low-angle gray = 13°
• Nozzle choices: 27 (12 standard red, 8 standard blue, 7 gray low-angle)
• Warranty: 2-year manufacturer trade warranty
• UPC: 40611698100873

What’s in the Box

• One PGP-ADJ rotor body, factory-installed rubber cover
• Twelve standard red 25° nozzles on a snap-in rack: #0.75, #1.0, #1.5, #2.0, #2.5, #3.0, #4.0, #5.0, #6.0, #7.0, #8.0, plus a blank plug
• Printed install reference

Install Notes

Inlet: 3/4 in. female NPT — threads directly onto a 3/4 in. PVC riser or onto Hunter’s HSJ-Series prefabricated 3/4 in. PVC swing joint (sold separately). Apply 2–3 wraps of PTFE tape; hand-tighten plus a quarter turn with a wrench. Install at finished grade.

Nozzle selection: Pop the cap, lift the nozzle rack, and snap the chosen nozzle into the turret. Re-test radius and arc, then trim the radius with the hex-end set screw using the Hunter wrench (max 5 full turns — past that the screw can fall out).

Arc setting (Hunter wrench, plastic-key end): rotate the turret counterclockwise to clear any interrupted cycle, clockwise to the right (fixed) stop, hold the turret there, insert the key, and rotate clockwise to increase arc (90° per full turn) or counterclockwise to decrease. The mechanism ratchets at 40° minimum and 360° maximum.

Need a Check Valve?

The base PGP-ADJ ships without a check valve. For slopes up to ~3 ft of elevation change, drop Hunter’s drain check valve (P/N 142300SP, sold separately) into the inlet. For steeper grades or higher elevation change, step up to the PGP-ADV (factory-installed in-body check valve) instead of retrofitting the ADJ.

PGP-ADJ vs. PGP Ultra (PGP-04) — Which Should You Buy?

• PGP-ADJ — standard water-lubricated gear drive, reversing full-circle, 40°–360° arc, 2-year warranty. The right call for residential and light-commercial lawn zones where budget matters.
• PGP-04 Ultra — non-strippable drive (won’t damage gears if a kid forces the turret), automatic arc return, true continuous full-circle, 50°–360° arc, 5-year warranty. The upgrade for high-traffic turf, vandalism-prone properties, and crews who want one fewer service call per year.

Compatibility

The PGP-ADJ is family-compatible with every Hunter rotor accessory: HSJ-Series swing joints, MP Rotator nozzles (via the MP1000-PGP retrofit cap), short-radius black nozzles for tight beds, high-flow green nozzles for large open turf, and MPR matched-precipitation nozzles for mixed-flow zones. Nozzle rack replacement parts: red P/N 130900, blue P/N 665300, gray low-angle P/N 233200.

Stop by Garoppo’s to pick one up, or schedule local delivery within our service area.