Water above grade with Rain Bird 2045PJ Maxi-Bird, a plastic impact sprinkler mounted on a fixed riser. Its 1/2-inch male NPT connection, supplied blue #8 standard-angle nozzle and full- or part-circle pattern help match a slope or larger planting layout. Unlike a Maxi-Paw pop-up, the head remains exposed above the riser.
Key Features
Fixed-riser plastic impact head for above-grade irrigation.
1/2-inch male NPT inlet.
Blue #8 standard-angle nozzle supplied.
Full-circle operation or adjustable 20–340-degree part circle.
Precision Jet tube and straight-through flow path.
Interchangeable bayonet-mount nozzles.
Common Uses
Above-grade slope or landscape irrigation where an exposed fixed-riser head is appropriate.
Replacing a compatible Maxi-Bird after checking connection, support and nozzle demand.
Mounting: fixed riser; not a retracting pop-up body.
Body type: plastic impact sprinkler.
Arc: 360-degree full circle or 20–340-degree adjustable part circle.
Supplied nozzle: blue #8 standard angle, 23-degree trajectory.
Operating pressure: 25–60 psi.
Family radius: 22–45 ft, depending on nozzle and pressure.
Family flow: 1.5–8.4 GPM, depending on nozzle and pressure.
Blue #8 at 35 psi: 38 ft radius; 3.3 GPM.
Chart data is collected in zero-wind conditions; check actual coverage.
Compatibility & Installation Notes
Connect the 1/2-inch male NPT inlet to an appropriate female threaded fitting on a supported fixed riser. Mount high enough to clear planting while allowing the impact arm to move freely.
Choose full-circle or part-circle operation and set the trip mechanism and stops for the intended watering boundary. Check the pattern with the zone running.
Use the selected nozzle’s pressure-specific chart when checking flow and overlap. The supplied blue #8 does not provide the entire family’s radius range at every pressure.
Turn off the zone before nozzle service and use the Maxi-Bird’s applicable bayonet-nozzle procedure. Keep the flow path and nozzle clear; an impact design does not eliminate the need for maintenance.
Frequently Asked Questions
Does this sprinkler pop up?
No. 2045PJ is an exposed, fixed-riser Maxi-Bird impact head. Maxi-Paw is the separate closed-case pop-up family.
What inlet connection does it have?
It has a nominal 1/2-inch male NPT inlet for an appropriate female threaded riser fitting.
Which nozzle is included?
A blue #8 standard-angle nozzle with a 23-degree trajectory is supplied. At 35 psi, the manufacturer chart lists a 38-foot radius and 3.3 GPM.
Can it water a partial circle?
Yes. It offers an adjustable 20–340-degree part-circle pattern as well as full-circle operation.
Why Buy from Big Frog Supply?
Choose 2045PJ when an above-grade impact head with a 1/2-inch male NPT connection fits the installation. The supplied blue #8 nozzle is charted at a 38-foot radius and 3.3 GPM with 35 psi, providing a concrete starting point for checking the water supply. Its full-circle or 20–340-degree part-circle pattern follows the boundary without requiring a buried Maxi-Paw case.
Model: 2045PJ / 2045-PJ Maxi-Bird; manufacturer reference B4600008.
Connection: nominal 1/2-inch male NPT.
Mounting: fixed riser; not a retracting pop-up body.
Body type: plastic impact sprinkler.
Arc: 360-degree full circle or 20–340-degree adjustable part circle.
Supplied nozzle: blue #8 standard angle, 23-degree trajectory.
Operating pressure: 25–60 psi.
Family radius: 22–45 ft, depending on nozzle and pressure.
Family flow: 1.5–8.4 GPM, depending on nozzle and pressure.
Blue #8 at 35 psi: 38 ft radius; 3.3 GPM.
Chart data is collected in zero-wind conditions; check actual coverage.
