Hunter Institutional Spray

Hunter Institutional Spray


Exceptional strength, innovative features…just the need for high traffic areas. Features like a positive-seal flush cap with an innovative pullup design that keeps debris out. A high quality, multi-functional, pressure-activated wiper seal. True pressure regulation under a wide range of environmental and pressure conditions to reduce water waste. An in-stem regulator that acts as a flow control device if the nozzle is removed. A super heavy-duty check valve assembly that eliminates the potential liability issues of low head drainage, the most powerful retraction  spring in its class. Sounds like a lot in a spray sprinkler? How about one more great feature – just like all other Hunter Institutional SeriesTM irrigation products, it carries a 5 year warranty.


  • In-stem pressure regulation built in.
    Maximum nozzle efficiency regardless of inlet pressure.
  • Heavy-duty body and cap construction.
    Multi-thread buttress design withstands the harshest envvironments.
  • Pressure activated, multi-function, no flow-by wiper seal.
    Easy to remove and clean; treated with UV inhibitors to ensure
    long life.
  • Compatibility with all female threaded nozzles.
    Accepts adjustable, fixed and specialty nozzles from Hunter and all major brands.
  • Optional Factory-installed drain check valve for up to 10 feet elevation change.
    Eliminates landscape damage from flooding and erosion.
  • Ratcheting riser for quick arc alignment.
    Make adjustments while sprinkler is operating.
  • Heavy-duty spring.
    For positive retraction under any conditions.
  • Innovative “pull ring” flush plug design.
    Allows limited flow permitting controlled directional flushing.


  • Recommended pressure range: 103 to 689 kPa
  • Flow-by: 0 at 68kPa or greater; 0.4l/min otherwise.
  • Precipitation rate: approximately 38mm/hour.

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