Pressure Regulators

3/4" Regulator

The function of a pressure regulator is to reduce a varying inlet pressure to a constant outlet pressure, regardless of changes in the upstream pressure due to flow, elevation, pumping, etc.

Benefits of pressure regulation include a uniform depth of water application, and controlled sprinkler performance (flow and throw distance).

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Pressure Regulators

3/4" Regulator

3/4 Regulator

All New All-Flo

The newest regulator in the industry and winner of the 2020 Irrigation Association New Product Contest introduces maximum flow capacity, accuracy, and plug resistance.

  • One regulator for the entire pivot nozzle range: 0.5-20 gpm (0.1-4.5 m3/h) reduces inventory.
  • Efficient design saves energy by only requiring 5 psi pressure differential for accurate regulation.

Single Strut Seat Design Standard with Uni-Flo

The single-strut technology in the Uni-Flo regulator minimizes “hair-pinning” of debris around the inlet seat, providing more plug resistance for systems operating in dirty water conditions.

Patented Dampening System

The patented o-ring dampening system of all Nelson pressure regulators handles severe pressure surges to withstand water hammer.

Extended Performance and Precision Accuracy

Precision components coupled with an internally lubricated o-ring minimize frictional drag and hysteresis. Made of the toughest chemically resistant materials. 100% tested for accuracy.

Universal Square-Thread Connection Option

Integral adapter connects directly into all Nelson Pivot Sprinklers and creates an easy-to-assemble, economical pivot sprinkler package.


All-Flo PPR

Maximum flow capacity, accuracy, and plug resistance. One regulator for the entire pivot nozzle range: 0.5-20 gpm (0.1-4.5 m3/h)

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Accurate pressure regulation for center pivot and other irrigation applications from 0.5-12 gpm (0.11-2.72 m3/h).

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Accurate pressure regulation for high flows: 2-20 gpm (0.45-4.54 m3/h)

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Please read our Warranty information.

Sprinkler performance data have been obtained under ideal test conditions and may be adversely affected by wind, poor hydraulic entrance conditions, or other factors. Published radius and diameter of throw performance are at nozzle pressure when tested at 1,250 feet above sea level. Your results may differ from the test data results obtained by Nelson Irrigation Corporation and Nelson Irrigation Corporation makes no representation regarding droplet conditions, uniformity, application rate, or fitness for a particular purpose.