RK-40F Brass Impact Sprinkler – 1" FNPT Full Circle 27°

RK-40F – 1" FNPT Full Circle Brass Impact Sprinkler (27°)

The RK-40F is a 1" FNPT full-circle brass impact sprinkler with dual 9/32" x 3/16" nozzles, a flow range of 16.2–40.6 GPM, and a radius of 62.3–75.4 ft at 35–70 PSI. The female FNPT connection threads directly onto a male riser stub without an adapter, simplifying installation in systems designed around standard male threaded risers.

Key Features and Benefits

• 1" FNPT female connection — threads directly onto male riser ends, eliminating the need for a separate fitting adapter at installation.
• Large flow capacity (16.2–40.6 GPM) — suited to high-demand commercial systems with wide riser spacings.
• 62.3–75.4 ft radius — one of the longest throws in the brass impact range, reducing the number of risers required per acre.
• Dual nozzle set (9/32" x 3/16") — select from two flow rates to match system design requirements.
• Bronze body and arm — corrosion-resistant for heavy-use agricultural service.
• Brass nut and tube — precise nozzle alignment for uniform distribution across the large wetted circle.
• Stainless steel spring and pin — reliable impact drive for high-volume continuous-run applications.

Construction

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