RK-45 Brass Impact Sprinkler – 1" MNPT Part Circle 23° with Diffuser Screw

RK-45 – 1" MNPT Part Circle Brass Impact Sprinkler (23°) with Diffuser Screw

The RK-45 is a 1" MNPT part-circle brass impact sprinkler with a 23° trajectory, dual 9/32" x 1/8" nozzles, and a diffuser screw. With a flow range of 13.5–29 GPM and a radius of 50–69 ft at 35–70 PSI, it delivers the flow capacity of the RK-44 with the added flexibility of adjustable arc coverage — the preferred choice for boundary rows and perimeter positions in large-scale commercial irrigation layouts.

Key Features and Benefits

• Adjustable part-circle arc — limits coverage to the irrigated zone at field edges, roadsides, and around structures.
• Diffuser screw — reduces throw radius on-site without nozzle changes for fine-tuned edge coverage.
• High flow capacity (13.5–29 GPM) — matched to large 1" laterals with minimal pressure loss.
• 50–69 ft radius — wide coverage per riser in part-circle mode, minimizing head count for large boundary rows.
• Bronze body and arm — corrosion-resistant for demanding continuous-run service.
• Brass nut and tube — precise nozzle alignment for consistent distribution uniformity.
• Stainless steel spring and pin — reliable impact drive for low-maintenance field operation.

Construction

Bronze body and arm, brass nut and tube, stainless steel spring and pin. Spring arm impact drive.