The STG-900-KIT has been replaced by the ST-1600-KIT.
Application Synthetic Turf Sports Fields
Radius 103' to 120'
Flow 74.5 to 92.0 GPM
Year Discontinued 2024
Inlet Size 1½" Acme
Product Line
Discontinued Models




Inlet Size

Model Opis Dodaj do listy
STG-900-83 Rotor do murawy syntetycznej, część wynurzalna: 8 cm, regulacja w zakresie od 40 do 360°, plastikowa wieżyczka, gwinty wlotowe Acme 1½″ (40 mm), technologia pełnego serwisowania odgórnego, zainstalowana dysza 83; do użytku z zestawem STG-900-KIT +
ST-173026-B Akcesoria do murawy syntetycznej, kompozytowa obudowa, odlewane otwory na rotor i port szybkiego dostępu do szybkozłącza; do użytku z zestawem STG-900-KIT +
ST-2008-VA Akcesoria do murawy syntetycznej, pionowe złącze obrotowe PVC, 7 punktów obrotowych, wlot wewnętrzny pasowany 5 cm, wyjście z gwintem wewnętrznym Acme 1½″ (40 mm); do użytku z zestawem STG-900-KIT +
ST-VBVF-K Akcesoria do murawy syntetycznej, złączki Acme 1½″ (40 mm) × 1½″ (40 mm) NPT, zawór ICV-151G, złączka klejona 1½″ (40 mm) NPT × 1½″ (40 mm), zawór kulowy kolektora 1½″ (40 mm), złączka klejona 1½″ (40 mm) × 1½″ (40 mm) Acme; do użytku z STG-900-KIT +
HQ-5-RC Szybkozłącze HQ, wlot żeński 1″ (25 mm), 1 gniazdo, 1-częściowy korpus; zgodny z kluczem HK-55 i złączami obrotowymi do węża HS-1 lub HS-2 oraz żółtą pokrywą +
Opcje instalowane przez użytkownika

Skontaktuj się z lokalnym dystrybutorem w celu uzyskania informacji o dostępności i zamawianiu produktów.


The STG-900-KIT was discontinued in 2024. The recommended replacement for the kit is the ST-1600-KIT, which offers a larger size for easier installation and servicing. It also provides comprehensive coverage of flow ranges as low as 23.3 to 236 GPM (88.2 to 893 l/min).

The obsoleted components included in the STG-900-KIT are listed below, and each is warrantied for five years from the manufacturing date code.  

STG-900-KIT components being obsoleted:

ST-173026-B Composite Vault

ST-2008-VA PVC Swing Joint

ST-VBVF-K Valves and Fittings

239800 Acme Elbow Fitting

Visit the ST-1600-KIT page for a list of components to order for replacement.

Operating Specifications

•    Radius: 103' to 120'
•    Flow: 74.5 to 92.0 GPM
•    Operating pressure range: 100 to 120 PSI
•    Precipitation rate: 1.25 in/hr approximately
•    Warranty period: 5 years for component parts


The Hunter STG-900-KIT is the first and only fully integrated irrigation solution for mall-to-midsize synthetic turf fields. This unique, cost-effective offering combines our legendary gear-driven rotor technology with a special multi-axis swing joint, low-pressure-loss valves, and feature-packed vault for reliable, long-term performance.

All irrigation components, including the swing joint point of connection, are accessible through the top for flexible and easy installation, servicing, and maintenance. This complete access also eliminates any need for excavation when restoring the field, saving a significant amount of time and money. Ordering is a snap too, thanks to the kit’s handy reference sheet that lists everything you need.

ST-900-KIT Components

1STG-900-831Pop-up, top-serviceable, adjustable arc (40° to 360°), 1½" Acme inlet
2ST-173026-B1Composite vault, pre-cast hole for rotor and quick coupler
3ST-2008-VA1Vertical alignment PVC Swing Joint, seven pivot points, 2" female slip inlet, 1½" female Acme outlet
4ST-VBVF-K1ICV-151G Valve, manifold ball valve, 1½" Acme inlet, 1½" Acme outlet
523980011½" elbow, female Acme to male Acme, connects STG-900 Rotor to ST-VBVF-K
6473900SP1STG-900 Rubber Cover Kit
7HQ-5RC1Quick coupler, 1" NPT inlet, 1¼" outlet for key


Flexible arc adjustment from 40° to 360° offers narrow-to-wide coverage
QuickCheck™ Arc Mechanism lets you verify the arc setting without waiting for the sprinkler to finish its rotation
Through-the-top arc adjustment allows you to easily set the arc at the sprinkler head
Water-lubricated gear drive delivers reliable operation without clogging
Factory-installed rubber logo cap increases athlete safety on the field
Nozzle trajectory: 22.5°

Funkcje zaawansowane

Designed for small to midsize synthetic turf field layouts, the kit’s STG-900 rotor offers a radius range up to 120'. Featuring a slightly larger exposed surface area, it includes through-the-top access to the riser assembly for easy maintenance. This versatile option can be installed in a vault system within the synthetic field or in the natural turf adjacent.

Traditional swing joints will cause the rotor to move back and forth as the elevation of the rotor is raised and lowered. While appropriate for natural turf installations, synthetic turf systems require a completely different approach. The best way to support the rotor's tremendous lateral thrust during operation is to place the rotor in a snug fitting hole within the vault's cover set. In order to set the rotor perfectly to grade and in this very specific location the swing joint must provide flexible movement in every direction, not only up and down, but also forward, backward, left and right. Ideally, this flexibility would include the ability to "reset" the elevation grade of the rotor should the enclosure settle downward during the vibratory compaction of the surrounding field base material. Enter the Hunter Vertical Alignment (VA) swing joint. Offering the ultimate in flexibility, our vertical alignment swing joint includes six pivot points for multi-axis movement plus a seventh pivot at the outlet for rotational adjustments of the valve and rotor assembly. Constructed of rugged 2"  PVC pipe and fittings, this 315 PSI rated swing joint dramatically reduces dangerous water velocities and performance robbing pressure loss through the ST System's components.

ST Accessories

The Hunter ST vault's complementary blend of features include construction grade fiberglass in the body, high impact polymer-concrete on the exposed upper rim and a near indestructible polymer-concrete cover set. Together, they form a 20,000+ lb. rated enclosure that is durable, yet easy to install at 105 lbs. with the covers removed.

The exclusive 2” thick three-piece polymer-concrete cover set has a perfectly located cast-in hole for the STG-900 rotor on one side. This design allows the rotor to be held perfectly to grade within the hole while the enclosure is back-filled from the exposed opposite side. Quick couplers are a must-have around every synthetic field. The cast-in quick coupler port and cover on the opposite side eliminates the need for separate quick coupler enclosures around the playing field.

Quick Coupler

All ST Vaults include convenient quick access ports. Quick-couplers provide a convenient source of water for washing down spills and water-soluble paint. Integrated in-vault design eliminates the need for additional quick-coupler enclosures.



Clear Advantage of the Hunter ST Vault


Have you ever tried to bore a hole into polymer-concrete? It is near impossible. How about installing and setting a 400 lb. polymer-concrete enclosure? Not very much fun.

We designed the ST vault to be as lightweight and easy to install as possible without sacrificing durability. From the functionality perspective, the three-piece cover, large interior space and total top access to all components make servicing easier and the system less expensive to maintain.

Sports Turf Irrigation System

For some, the preferred approach to designing synthetic turf irrigation systems is the "block" type configuration with remotely located valves that are off the synthetic surface. The benefit of this configuration is that it removes all high-pressure mainlines from beneath the synthetic surface. Through the use of a remotely located isolation valve, constantly pressurized supply lines to the quick couplers can be removed from beneath the synthetic surface as well.

For others, the preferred approach is to use valve-in-head (VIH) rotors. However, typical VIH rotors have an unacceptably high-pressure loss at the high flows and pressures that are inherent in all synthetic turf irrigation systems. As a result, the Hunter ST System utilizes a valve adjacent to head (VAH) configuration. This design lowers the pressure loss down to a very acceptable 3.9 PSI at 75 GPM through the valve assembly. 

Sports Turf Valve


STG-900 Nozzle Performance Data
Nozzle Pressure
Precip in/hr
100 103 74.5 1.35 1.56
110 109 77 1.25 1.44
120 115 79.6 1.16 1.34
100 112 84.2 1.29 1.49
110 116 88.1 1.26 1.46
120 120 92 1.23 1.42

All precipitation rates calculated for 180 degree operation. For precipitation rate of 360 degree sprinkler divide by 2.
Requires minimum 100 PSI dynamic pressure supplied to swing joint inlet.


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