G990

Covering 73' to 103', the G990 is the perfect combination of performance and reliability.

Hunter G900 Series golf rotors feature the perfect combination of durability, efficiency and user flexibility. Available in a variety of TTS and DIH configurations, they offer a solution for any long-range on-course watering need. Patented TTS technology allows for every serviceable element of the rotor to be accessed through the top. Mechanical and electrical, big and small, you can get to every component simply from the playing surface. That means there’s no more digging, and no more unsightly scars. And contrary to competitors, all Hunter golf rotors are manufactured in the United States of America.

Product Tabs

Features

Full circle water lubricated gear-drive
Exclusive PressurePort™ technology delivers uniform and consistent coverage
Closed-case design helps prevent sticking riser and leaking seals
Flexible performance with 16 nozzles to choose from

TTS G900 Series Advanced Features [1]

Hunter's revolutionary TTS (Total Top Servicing) design offers exclusive and unique features and benefits that are designed with serviceability and innovation in mind. Click here [2] to see all the TTS Advanced Features and why a Hunter Golf system is the right choice for your course.

Large & Flexible Yardage Marker Options [3]

Standard recessed area for
placard markers.

Optional raised marker for popular engraved and paint-filled markers.

Dual Trajectory Color-Coded Nozzles [4]

All G900 Series rotors have color-coded nozzles for easy identification and, the nozzle numbers approximate the flow in gallons per minute. Choose from the eight standard 22.5 degree trajectory nozzles or the eight 15 degree nozzles for low-angle applications.

Standard 22.5 degree trajectory nozzles

Low-angle 15 degree trajectory nozzles

Exclusive DIH Capability [5]

Factory configured Decoder-In-Head (DIH) rotors are available for all 800 Series and 900 Series valve-in-head TTS rotors. All DIH rotors include Hunter's patented Total Top Programming technology. Whether on the workbench or after installation, the decoder station can be programmed without rotor dis-assembly.

Models

G990 SPECIFICATION BUILDER

MODELS

VALVE OPTIONS

NOZZLE OPTIONS

REGULATION

OPTIONS

G990 = Full Circle

C =	Check-O-Matic *
D =	Decoder Valve-In-Head **
DD =	2-Station Decoder Valve-In-Head **
E =	Electric Valve-In-Head

*	Converts to N.O. Hydraulic Valve-In-Head
**	SSU configuration only

25 to 73 = Installed
Nozzle*

* SSU = #25 or #53

P8 =	80 PSI*
P1 =	100 PSI
P2 =	120 PSI

* SSU = P8 / #25
or P8 / #53

S = SSU *

* Standard
Stocking Unit

EXAMPLES

G990 - E - 53 - P8 - S

G990 full-circle - Electric Valve-In-Head - installed #53 nozzle - 80 PSI regulation - standard stocking unit model

G990 - C - 73

G990 full-circle - Check-O-Matic - installed #73 nozzle

G900 Series Comparison Chart

	[6] G990 [6]	[7] G995 [7]
FEATURES
ACME Threaded Inlet Size	1½"	1½"
Radius (ft.)	73' - 103'	75' - 104'
Flow Rate (GPM)	30.5 - 83.3	29.5 - 83.8
Recommended Pressure Range (PSI)	80 - 120	80 - 120
Precipitation Rate (in/hr, 360°)	0.55 - 0.88	0.50 - 0.88
Dual Trajectory Capability	22.5º & 15º	22.5º & 15º
Check Height (ft., C.O.M. Models)	25'	25'
Nozzle Options	16	16
Component Exchange Warranty	3 Years	3 Years
ADVANCED FEATURES
Contour "Back-Nozzle" Capability
Full-Circle Opposing Nozzles
Exclusive PressurePort™ Nozzle Technology
Yardage Marker Capable
Check-O-Matic Models
Electric Valve-In-Head Models
Exclusive - DIH Decoder-In-Head Models
Exclusive - TTS Total Top Serviceability
Exclusive - Made in The USA

Specifications

MODEL SPECIFICATIONS

Full Circle

MODEL VARIATIONS

C =	Check-O-Matic checks up to 25' in elevation change and readily converts to Normally Open Hydraulic with through the top connections

D =	Decoder Valve-In-Head with all "E" specifications below

DD =	2-Station Decoder Valve-In-Head with all "E" specifications below

E =	Electric Valve-In-Head with adjustable pressure regulation, on-off-auto selector, 190mA (350mA inrush) solenoid with captive plunger and internal downstream bleed.

OPERATING SPECIFICATIONS

Discharge rate: 30.5 to 83.3 GPM
Radius: 73' to 103'
Pressure range: 80 to 120 PSI
Pressure rating: 150 PSI

G990 Dimensions

	G990
Overall Height	13-1/4"
Pop-up Height	3"
Flange Diameter	7-1/2"
Inlet Size	1-1/2" Female ACME

G990 Nozzle Performance Data*

Nozzle	Pressure (PSI)	Radius ** (ft.)	Flow (GPM)	Precip in/hr
Nozzle	Pressure (PSI)	Radius ** (ft.)	Flow (GPM)
25 Lt. Blue	80	73	30.5	0.55	0.64
	90	75	32.4	0.55	0.64
	100	76	34.3	0.57	0.66
	110	78	36.5	0.58	0.67
	120	79	38.4	0.59	0.68
33 Gray	80	77	36.3	0.59	0.68
	90	78	38.4	0.61	0.70
	100	80	40.6	0.61	0.71
	110	81	42.7	0.63	0.72
	120	82	44.9	0.64	0.74
38 Red	80	80	40.6	0.61	0.71
	90	82	42.9	0.61	0.71
	100	83	45.3	0.63	0.73
	110	85	47.7	0.64	0.73
	120	86	50.2	0.65	0.75
43 Dk. Brown	80	83	46.2	0.65	0.75
	90	84	48.6	0.66	0.77
	100	85	50.9	0.68	0.78
	110	86	53.4	0.69	0.80
	120	87	55.9	0.71	0.82
48 Dk. Green	80	86	49.6	0.65	0.75
	90	89	52.5	0.64	0.74
	100	90	54.8	0.65	0.75
	110	91	57.3	0.67	0.77
	120	92	59.5	0.68	0.78
53 Dk. Blue	80	89	54.2	0.66	0.76
	90	90	56.7	0.67	0.78
	100	92	59.2	0.67	0.78
	110	93	61.7	0.69	0.79
	120	94	64.2	0.70	0.81
63 Black	80	92	63.2	0.72	0.83
	90	94	65.9	0.72	0.83
	100	96	69.4	0.72	0.84
	110	97	72.0	0.74	0.85
	120	98	74.9	0.75	0.87
73 Orange	80	96	72.1	0.75	0.87
	90	98	75.0	0.75	0.87
	100	99	77.8	0.76	0.88
	110	102	80.5	0.74	0.86
	120	103	83.3	0.76	0.87
* Complies to ASAE standard. All precipitation rates calculated for 360° operation. All triangular rates are equilateral. ** For low angle nozzle performance, reduce radius by 15%

Resources

Literature

[8]

USA

[8]

Metric

[9]

简体中文

[10]

[11]

Hunter Golf Catalog [8]

[12]

USA

[12]

[11]

G900 Series Brochure [12]

Manuals

[13]

USA

[13]

Español

[14]

Français

[15]

[11]

TTS Owner's Manual [13]

Photos

[16]

USA

[16]

[11]

Golf Photos [16]

Specifications

[17]

USA

[17]

[11]

Golf Rotors Installation Details (DWG) [17]

[18]

USA

[18]

[11]

Golf Rotor Written Specification [18]

[19]

USA

[19]

[11]

Golf Rotors Installation Details (PDF) [19]

[20]

USA

[20]

[11]

Golf Rotors Installation Details (DXF) [20]

Support

Topic	Title [21]	Rating [22]
Installation Procedures	Control Tubing Connections – C.O.M Models Converted To Hydraulic Configuration >> Read More [23]	0.05
Adjustment, Installation Procedures	Stator Adjustments – Why and When Are They Needed? >> Read More [24]	0.05
Adjustment, FAQs	ON-AUTO-OFF Selection - Electric VIH Models >> Read More [25]	4
FAQs	Solenoid Connections - Electric VIH Models >> Read More [26]	5
Adjustment, Installation Procedures	Upper Snap-ring Removal – G900 Series >> Read More [27]	5
Adjustment, Installation Procedures	Stator Adjustments – G90 and G95 Risers >> Read More [28]	5
FAQs	What's the difference between an Acme thread and a NPT or BSP thread? >> Read More [29]	5
FAQs, Replacement Guides, Troubleshooting	Golf Product Warranty Date Code Locations >> Read More [30]	5

G990

G990

Product Tabs

TTS G900 Series Advanced Features [1]

Large & Flexible Yardage Marker Options [3]

Dual Trajectory Color-Coded Nozzles [4]

Exclusive DIH Capability [5]

G990 SPECIFICATION BUILDER

G900 Series Comparison Chart

MODEL SPECIFICATIONS

MODEL VARIATIONS

OPERATING SPECIFICATIONS

G990 Dimensions

G990 Nozzle Performance Data*

25

33

38

43

48

53

63

73

Literature

Manuals

Photos

Specifications