I-20

A High Performance Rotor with the Diversity and Efficiency for Any Site

With 22 nozzle choices, a 17’ to 46’ radius, and 6 body choices, the I-20 is an indispensable rotor. Whether you’ve got a small area, sandy soil, or a mix of shrubs and grass, the I-20 is ready to water with efficiency and reliability. Recent improvements include automatic arc return; non-reversing 360, from 50 to 360 degrees; and a non-strippable, vandal-proof drive mechanism that prevents gear stripping and saves repair costs. Adding FloStop® control, easy through-the-top arc adjustment, and a standard drain-check valve all equate to a rotor that stands second-to-none in its class.

Product Tabs

Features

Models: Shrub, 4", 6", 12"
Models stainless riser: 4", 6"
Arc setting: 50 to 360 degrees
Factory installed rubber cover
Through-the-top arc adjustment
Quick check arc mechanism
Water lubricated gear-drive
Warranty period: 5 years
Nozzle choices: 22
Nozzle racks: 1.5 to 8.0 blue, 2.0 LA to 4.5 LA gray, 0.50 to 3.0 black, 6.0 to 13.0 green

Automatic Arc Return [1]

This feature returns to the original arc regardless of where the turret is turned. This ensures vandal protection in any environment.

Non-Strippable Drive [2]

The patented, non-strippable, vandal proof drive mechanism enables the turret to be turned without causing damage.

Part- and Full-Circle in One Model [3]

Patented non-reversing 360 for part- and full-circle in one model, from 50 to 360 degrees.

Headed and Slotted Set Screw [4]

Use a slotted screwdriver or the Hunter wrench for easier and simpler adjustments as needed.

FloStop® Control [5]

FloStop closes the flow of water from individual sprinkler heads while the system is running. This is ideal for changing nozzles or turning off specific heads during maintenance and construction.

Optional Reclaimed Water ID [6]

Purple caps indicate where non-potable irrigation water is being used.

Stainless Steel Riser [7]

For unforgiving soil conditions, unpredictable climates, or heavy foot traffic, stainless steel is the best choice

Drain Check Valve (up to 10 ft. of elevation) [8]

The drain check valve keeps lines from draining when the system is shut off. This saves water, reduces liability, and increases system life.

Models

I-20-00

Overall Height: 7¾"
Exposed Diameter: 1¾"
Inlet Size: ¾" female NPT

I-20-04

Overall Height: 7-1/8"
Pop-up Height: 4"
Exposed Diameter: 1¾"
Inlet Size: ¾" female NPT

I-20-06

Overall Height: 9-7/8"
Pop-up Height: 6"
Exposed Diameter: 1¾"
Inlet Size: ¾" female NPT

I-20-12

Overall Height: 17"
Pop-up Height: 12"
Exposed Diameter: 1¾"
Inlet Size: ¾" female NPT

I-20 (Plastic) - Specification Builder: Order 1 + 2 + 3 + 4

2 Models

I-20-00 = Shrub

I-20-04 = 4" Pop-up

I-20-06 = 6" Pop-up

I-20-12 = 12" Pop-up

4 Standard Features

Adjustable arc, plastic riser, check valve, 8 standard nozzles, and 4 low-angle nozzles

1 Feature Options

NCV = Without check valve (only available on 4" model)

R = Reclaimed water ID

3 Nozzle Options

1.5 to 4.0 = Factory installed nozzle number

I-20 (Stainless Steel) - Specification Builder: Order 1 + 2 + 3 + 4

2 Models

I-20-04-SS = 4" Pop-up

I-20-06-SS = 6" Pop-up

4 Standard Features

Adjustable arc, stainless steel riser, check valve, 8 standard nozzles, and 4 low-angle nozzles

1 Feature Options

NCV = Without check valve (only available on 4" model)

R = Reclaimed water ID

3 Nozzle Options

1.5 to 4.0 = Factory installed nozzle number

Examples:

I-20-04 = 4" pop-up, adjustable arc

I-20-12 - R - 4.0 = 12" pop-up, adjustable arc, with reclaimed water ID, and 4.0 nozzle

I-20-06-SS - R - 3.0 = 6" pop-up, adjustable arc, stainless steel, reclaimed water ID, and 3.0 nozzle

1/2" and 3/4" Inlet Rotor Comparison Chart

View 1" and 1.5" Inlet Rotors >> [9]

A Standard that Has Yet to be Matched Hunter made its reputation on the quality, reliability and innovative features found in its rotary sprinkler line and continues to set the benchmark by which other manufacturer’s rotors are judged.	[10]	[11]	[12]	[13]	[14]
	SRM [10]	PGJ [11]	PGP-ADJ [12]	PGP Ultra^® [13]	I-20 [14]
QUICK SPECS
Radius	15' - 30'	15' - 37'	22' - 52'	17' - 46'	17' - 46'
Flow Rate (GPM)	0.42 - 3.4	0.64 - 5.3	0.5 - 14.1	0.36 - 14.8	0.36 - 14.8
Inlet Size	1/2"	1/2"	3/4"	3/4"	3/4"
FEATURES
Nozzle Options	6	8	27	22	22
Precipitation Rate (in/hr)	0.45	0.6	0.4	0.4	0.4
Recommended Pressure Range (PSI)	30 - 50	30 - 50	25 - 70	25 - 70	25 - 70
Operating Pressure Range (PSI)	20 - 100	20 - 100	20 - 100	20 - 100	20 - 100
Check Valves	Available	Factory Option	Available	Factory Option	Pre-Installed
Specialty Nozzles	N/A	N/A	N/A	Factory Option	Pre-Installed
Check Height (ft.)	7'	7'	4'	10'	10'
Factory-Installed Check Valve		Optional		Optional	10'
Warranty	1 Year	2 Years	2 Years	5 Years	5 Years
ADVANCED FEATURES
Low Angle Nozzle Choices
Automatic Arc Return
Non-Strippable Drive
Part and Full Circle in One Model
Headed & Slotted Set Screw
Reclaimed Water ID
Available Short Radius Nozzles
Available Factory Installed Check Valve with up to 10' Elevation Change
FloStop Control
Stainless Steel Riser Option
Applications
Residential
Commercial/Municipalities
Athletic Fields
High Vandalism Areas
Low Pressure Areas
Riser-Mounted Sprinklers
Ground Cover and/or Shrubs
Reclaimed Water

Specifications

Operating Specifications

Radius: 17' to 46'
Flow Rate: 0.36 to 14.8 GPM
Recommended pressure range: 25 to 70 PSI
Operating pressure range: 20 to 100 PSI
Precipitation rates: 0.4 in/hr approx.
Nozzle trajectory: Std = 25 degrees, Low angle = 13 degrees

PGP Ultra / I-20 Blue Standard Nozzle Performance Data View Nozzle [15]

Nozzle	Pressure	Radius	Flow	Precip in/hr
	PSI	ft	GPM
1.5 • Blue	25	29	1.2	0.27	0.32
	35	31	1.4	0.28	0.32
	45	31	1.5	0.30	0.35
	55	32	1.8	0.34	0.39
	65	32	1.9	0.36	0.41
2.0 • Blue	25	33	1.4	0.25	0.29
	35	33	1.7	0.30	0.35
	45	34	2.0	0.33	0.38
	55	34	2.1	0.35	0.40
	65	34	2.3	0.38	0.44
2.5 • Blue	25	33	1.7	0.30	0.35
	35	35	2.1	0.33	0.38
	45	35	2.5	0.39	0.45
	55	35	2.6	0.41	0.47
	65	35	2.9	0.46	0.53
3.0 • Blue	25	35	2.2	0.35	0.40
	35	36	2.7	0.40	0.46
	45	38	3.0	0.40	0.46
	55	39	3.4	0.43	0.50
	65	39	3.7	0.47	0.54
4.0 • Blue	25	37	3.0	0.42	0.49
	35	39	3.5	0.44	0.51
	45	40	4.0	0.48	0.56
	55	41	4.5	0.52	0.60
	65	41	4.8	0.55	0.63
5.0 • Blue	25	37	3.7	0.52	0.60
	35	39	4.5	0.57	0.66
	45	42	5.0	0.55	0.63
	55	42	5.7	0.62	0.72
	65	42	6.2	0.68	0.78
6.0 • Blue	25	38	4.3	0.57	0.66
	35	40	5.6	0.67	0.78
	45	43	6.0	0.62	0.72
	55	44	6.7	0.67	0.77
	65	44	7.3	0.73	0.84
8.0 • Blue	25	37	6.0	0.84	0.97
	35	41	7.0	0.80	0.93
	45	44	8.0	0.80	0.92
	55	46	9.0	0.82	0.95
	65	46	9.8	0.89	1.03
Notes: All precipitation rates calculated for 180 degree operation. For the precipitation rate for a 360 degree sprinkler, divide by 2.

PGP Ultra / I-20 Grey Low Angle Nozzle Performance Data View Nozzle [15]

Nozzle	Pressure	Radius	Flow	Precip in/hr
	PSI	ft	GPM
2.0 LA • Grey	30	25	1.6	0.49	0.57
	40	27	1.9	0.50	0.58
	50	28	2.1	0.52	0.60
	60	30	2.3	0.49	0.57
2.5 LA • Grey	30	25	2.1	0.55	0.64
	40	27	2.5	0.53	0.62
	50	28	2.8	0.49	0.57
	60	30	3.0	0.47	0.54
3.5 LA • Grey	30	29	2.8	0.64	0.74
	40	32	3.1	0.58	0.67
	50	35	3.5	0.55	0.64
	60	37	3.8	0.53	0.62
4.5 LA • Grey	30	29	3.4	0.78	0.90
	40	32	3.9	0.73	0.85
	50	35	4.4	0.69	0.80
	60	37	4.7	0.66	0.76
Bold = Recommended pressure Notes: All precipitation rates calculated for 180 degree operation. For the precipitation rate for a 360 degree sprinkler, divide by 2.

PGP Ultra / I-20 High Flow Nozzle Performance Data View Nozzle [16]

Nozzle	Pressure	Radius	Flow	Precip in/hr
	PSI	ft	GPM
10 • Dk. Green	40	42	8.4	0.92	1.06
	50	43	9.5	0.99	1.14
	60	45	10.5	1.00	1.15
	70	47	11.4	0.99	1.15
13 • Dk. Green	40	43	10.9	1.13	1.31
	50	44	12.3	1.22	1.41
	60	45	13.6	1.29	1.49
	70	47	14.8	1.29	1.49
6.0 LA • Dk. Green	30	31	4.2	0.84	0.97
	40	35	5.0	0.79	0.91
	50	37	5.8	0.82	0.94
	60	39	6.3	0.80	0.92
8.0 LA • Dk. Green	40	37	6.7	0.94	1.09
	50	39	7.7	0.97	1.13
	60	41	8.5	0.97	1.12
	70	41	9.2	1.05	1.22
Notes: All precipitation rates calculated for 180 degree operation. For the precipitation rate for a 360 degree sprinkler, divide by 2.

PGP Ultra / I-20 Black Short Radius Nozzle Performance Data View Nozzle [17]

Nozzle	Pressure	Radius	Flow	Precip in/hr
	PSI	ft	GPM
.50 SR • Black	30	17	0.36	0.24	0.28
	40	17	0.43	0.29	0.33
	50	18	0.50	0.30	0.34
	60	19	0.57	0.30	0.35
1.0 SR • Black	30	17	0.78	0.52	0.60
	40	17	0.90	0.60	0.69
	50	18	1.0	0.59	0.69
	60	19	1.1	0.59	0.68
2.0 SR • Black	30	17	1.4	0.93	1.08
	40	17	1.7	1.13	1.31
	50	18	2.0	1.19	1.37
	60	19	2.2	1.17	1.35
.75 SR • Black	30	23	0.58	0.21	0.24
	40	24	0.68	0.23	0.26
	50	25	0.75	0.23	0.27
	60	26	0.83	0.24	0.27
1.5 SR • Black	30	23	1.1	0.40	0.46
	40	24	1.3	0.43	0.50
	50	25	1.5	0.46	0.53
	60	26	1.6	0.46	0.53
3.0 SR • Black	30	23	2.5	0.91	1.05
	40	24	2.7	0.90	1.04
	50	25	3.0	0.92	1.07
	60	26	3.1	0.88	1.02
Bold = Recommended pressure Notes: All precipitation rates calculated for 180 degree operation. For the precipitation rate for a 360 degree sprinkler, divide by 2.

Resources

Literature

[18]

Topic	Title [47]	Rating [48]
Adjustment, FAQs	How do I obtain a Hunter adjustment wrench? >> Read More [49]	3.5
FAQs	Can I replace another brand's sprinkler with the Hunter brand? >> Read More [50]	3.55
Troubleshooting, Video	Why has my rotor stopped rotating? >> Read More [51]	3.8
Adjustment, Installation Procedures	I-20 Rotary Sprinkler Adjustment Instructions >> Read More [52]	4.15
Installation Procedures	I-20 Rotary Sprinkler Installation Detail >> Read More [53]	1
Charts, Replacement Guides	Replacement Guide: PGP Ultra / I-20 Rotors >> Read More [54]	0.05
FAQs, Troubleshooting, Video	What are some troubleshooting tips for a rotor that doesn't fully pop-up? >> Read More [55]	4.6
Adjustment, FAQs	How do I adjust the arc on my Hunter rotor? >> Read More [56]	2.35
Adjustment, FAQs, Video	How do I adjust the radius or distance of throw on my Hunter rotor? >> Read More [57]	4
Installation Procedures, Video	Rotor Nozzle Installation Procedure >> Read More [58]	4.85

I-20

I-20

Product Tabs

Automatic Arc Return [1]

Non-Strippable Drive [2]

Part- and Full-Circle in One Model [3]

Headed and Slotted Set Screw [4]

FloStop® Control [5]

Optional Reclaimed Water ID [6]

Stainless Steel Riser [7]

Drain Check Valve (up to 10 ft. of elevation) [8]

1/2" and 3/4" Inlet Rotor Comparison Chart

Literature

Manuals

Photos

Specifications

Video

View All Support Articles for This Product [59]