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Hunter Institutional Sprays

Quick Overview

Institutional spray sprinkler bodies with 1/2" inlet
All accepting Female Thread Nozzles

Product Name Price Qty
10cm (4") Pop-up Spray Body with Pressure Regulator
15cm (6") Pop-up Spray Body with Pressure Regulator
30cm (12") Pop-up Spray Body with Pressure Regulator

Availability: In stock


Hunter Institutional Spray sprinkler bodies with 1/2" inlet; accepts all female threaded nozzles

*Other sizes available upon request*

For long pipe runs with wide variations in available pressure, large elevation changes that make design difficult, or high and variable pressure situations that create nozzle performance problems, the Institutional Spray provides a comprehensive solution. Built-in pressure regulation to a true 30 PSI. You’ll get controlled, reliable pressure to Hunter’s wide array of available nozzles, as well as the elimination of misting, fogging or unwanted variation.

The pressure regulator is also dirt tolerant, handles extreme operating pressures up to 100 PSI, and will control flow rates by 70% if the nozzle is damaged or removed. Best of all, unlike pressure compensating screens, this regulator is built into the sprinkler, so it’s ready from the get-go to handle the extremes your site dishes out.


Features and Benefits:

In-stem pressure regulation:  

Maximum nozzle efficiency regardless of inlet pressure  

Heavy-duty body and cap construction:
Multi-thread buttress design withstands the harshest environments

Pressure activated, multi-function, no flow-by wiper seal:
Easy to remove and clean; treated with UV inhibitors to ensure long life

Compatible 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 14 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


Operating Specifications

  • Recommended pressure range: 15 to 100 PSI (1.0 to 6.9 bars; 103 to 689 kPa)
  • Flow-by: 0 at 10 PSI (.7 bars; 68 kPa) or greater; .1 GPM (0.02 m3/hr; 0.4 l/min) otherwise
  • Precipitation rates: approximately 1.5" (38 mm) per hour


Overall height:
-INST-04 – 57⁄8" (15.5 cm)
-INST-06 – 8¾" (22.5 cm)
-INST-12 – 161⁄8" (41 cm)
½" female inlet NPT
Exposed diameter: 2¼" (5.7 cm)


Additional Information

SKU LWHunter-InstitutionalSprays