Hunter I-20 stainless steel rotor
I-20 Family
Preview image for the video "Hunter ¾” Inlet Rotors".
Preview image for the video "Hunter I-Series Rotors Product Guide".
Specification builder chart.

I-20

The I-20 is loaded with upgraded features such as FloStop® control, check valves, and efficient nozzles that make it the perfect choice in a range of applications.
Radius 17' to 46'
Flow 0.36 to 14.8 GPM
Inlet Size ¾" NPT
  • Versatile: 34 nozzles and 6 body choices
  • Durable: Tough factory-installed rubber cover
  • Adjustable: 50º–360º arc setting with easy through-the-top adjustment
Product Line
Rotors

Models

Popular Models

i-20-04-prb_001_rt.jpeg

I-20-04-PRB

I-20 Rotor, 4", adjustable from 50° to 360°, ¾" inlet, check valve, pressure-regulated body, 1.5 GPM nozzle installed
I-20 Rotor, 10 cm, adjustable from 50° to 360°, ¾" inlet, check valve, pressure-regulated body, 1.5 nozzle installed
i-20-04-ss_clipped%202_blue%20band.jpeg

I-20-04-SS-PRB

I-20 Rotor, 4", adjustable from 50° to 360°, ¾" inlet, stainless steel riser, check valve, pressure-regulated body
I-20 Rotor, 10 cm, adjustable from 50° to 360°, ¾" inlet, stainless steel riser, check valve, pressure-regulated body

Filter

Filter

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Feature Options

Model Description Add to List
I-20-00 I-20 Rotor, shrub, adjustable from 50° to 360°, ¾" inlet, check valve +
I-20-00-R I-20 Rotor, shrub, adjustable from 50° to 360°, ¾" inlet, check valve, reclaimed ID +
I-20-04 I-20 Rotor, 4", adjustable from 50° to 360°, ¾" inlet, check valve +
I-20-04-NCV I-20 Rotor, 4", adjustable from 50° to 360°, ¾" inlet, no check valve +
I-20-04-R I-20 Rotor, 4", adjustable from 50° to 360°, ¾" inlet, check valve, reclaimed ID +
I-20-04-SS I-20 Rotor, 4", adjustable from 50° to 360°, ¾" inlet, stainless steel riser, check valve +
I-20-04-SS-NCV I-20 Rotor, 4", adjustable from 50° to 360°, ¾" inlet, stainless steel riser, no check valve +
I-20-04-SS-R I-20 Rotor, 4", adjustable from 50° to 360°, ¾" inlet, stainless steel riser, check valve, reclaimed ID +
I-20-06 I-20 Rotor, 6", adjustable from 50° to 360°, ¾" inlet, check valve +
I-20-06-R I-20 Rotor, 6", adjustable from 50° to 360°, ¾" inlet, check valve, reclaimed ID +
I-20-06-SS I-20 Rotor, 6", adjustable from 50° to 360°, ¾" inlet, stainless steel riser, check valve +
I-20-06-SS-R I-20 Rotor, 6", adjustable from 50° to 360°, ¾" inlet, stainless steel riser, check valve, reclaimed ID +
I-20-12 I-20 Rotor, 12", adjustable from 50° to 360°, ¾" inlet, check valve +
I-20-12-R I-20 Rotor, 12", adjustable from 50° to 360°, ¾" inlet, check valve, reclaimed ID +
Showing 1 - 14 of 14
I-20
I-20
I-20
User installed options

Contact your local distributor for product availability and ordering.

Specifications

Operating Specifications

  • Nozzle choices: 34
  • Radius: 17' to 46'
  • Flow: 0.36 to 14.8 GPM
  • Recommended pressure range: 25 to 70 PSI
  • Operating pressure range: 20 to 100 PSI
  • Precipitation rate: 0.4 in/hr approximately
  • Nozzle trajectory: standard = 25°, low-angle = 13°
  • Nozzle racks: 1.5 to 8.0 blue, 2.0 to 4.5 low-angle gray, 0.50 to 3.0 black, 6.0 to 13.0 green, MPR-25, MPR-30, MPR-35
  • Warranty period: 5 years

Factory-Installed Options

  • No drain Check Valve (NCV models)
  • Reclaimed water ID
  • Blue 1.5–4.0 nozzles

User-Installed Options

  • HSJ-0 prefabricated ¾" PVC Swing Joint

 Download Product Spec Sheet

  Download Written Specifications

Videos

Hunter ¾” Inlet Rotors

Hunter has a full range of rotors for any application. They are supplied with a full range of nozzles and have an extremely low warranty rate.

Dreamscapes Hunter Ep 2: PGP & I-20 Rotors

Watch this irrigation retrofit using Hunter PGP Ultra and I-20 Rotors to cost-effectively irrigate a large turf area, eliminate dead spots, and cut t

Hunter Rotors: The Most Efficient Way to Water Large Turf Areas

Learn why Hunter rotors are trusted by irrigation professionals worldwide.

Hunter I-Series Rotors Product Guide

Learn about recent product improvements that raise the bar for durability and performance, and why there is no better commercial sprinkler than Hunte

Hunter PGP Ultra and I-20 Rotor Nozzles Product Guide
Learn how to choose the right nozzle for your irrigation plan.
Cleaning a Filter on a Hunter Rotor

The most common reason for a sprinkler to stop rotating is the accumulation of debris in the filter.

All Product Videos

Features

With 34 nozzle options, 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.

Key Benefits

Patented automatic arc return feature returns the turret back to the original arc pattern if vandalized; adjustable arc from 50° to 360°
Non-strippable drive mechanism is protected from damage if turned in the opposite direction of travel
Part- and full-circle in one model for flexibility across landscapes and reduced inventory
Headed and slotted setscrew allows radius adjustment with a Hunter wrench or flat-blade screwdriver
FloStop® closes the flow of water from individual sprinklers to change the nozzle or perform repairs
Flat-top nozzles allow fast, easy insertion
QuickCheck™ Arc Mechanism for fast arc adjustment
Available stainless steel riser for extra durability
Drain check valve prevents low-head drainage (up to 10' of elevation)

Advanced Features

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

Advanced Feature - Auto Arc Return

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

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

Advanced Feature - Part- And Full-Circle in One Model

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

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.

Advanced Feature - FloStop Control

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

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

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

Charts

 
PGP Ultra / I-20 Blue Standard
Nozzle Performance Data
View Nozzle
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:

Bold = Recommended pressure.

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
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 27 2.1 0.55 0.64
40 30 2.5 0.53 0.62
50 33 2.8 0.49 0.57
60 35 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

Notes:


Bold = Recommended pressure.
 

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
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:

Bold = Recommended pressure.

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
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

Notes:


Bold = Recommended pressure.
 

All precipitation rates calculated for 180 degree operation. For the precipitation rate for a 360 degree sprinkler, divide by 2.
 
PGP ULTRA / I-20 MPR-25 RED NOZZLE PERFORMANCE DATA
Arc Pressure Radius Flow Precip in/hr
  PSI ft GPM
•
Red
90°
25 23 0.74 0.54 0.62
35 24 0.88 0.59 0.68
45 25 1.00 0.62 0.71
55 25 1.11 0.68 0.79
65 25 1.21 0.75 0.86
•
Red
120°
25 23 1.00 0.55 0.63
35 24 1.21 0.61 0.70
45 25 1.38 0.64 0.74
55 25 1.53 0.71 0.82
65 25 1.67 0.77 0.89
•
Red
180°
25 23 1.44 0.52 0.61
35 24 1.73 0.58 0.67
45 25 1.98 0.61 0.70
55 25 2.21 0.68 0.79
65 25 2.41 0.74 0.86
•
Red
360°
25 23 2.78 0.51 0.58
35 24 3.34 0.56 0.64
45 25 3.82 0.59 0.68
55 25 4.25 0.65 0.76
65 25 4.63 0.71 0.82
 
PGP ULTRA / I-20 MPR-30 LT. GREEN NOZZLE PERFORMANCE DATA
Arc Pressure Radius Flow Precip in/hr
  PSI ft GPM
•
Lt. Green
90°
25 29 1.03 0.47 0.54
35 30 1.23 0.53 0.61
45 30 1.40 0.60 0.69
55 30 1.56 0.67 0.77
65 30 1.69 0.72 0.83
•
Lt. Green
120°
25 29 1.34 0.46 0.53
35 30 1.62 0.52 0.60
45 30 1.85 0.59 0.69
55 30 2.06 0.66 0.76
65 30 2.24 0.72 0.83
•
Lt. Green
180°
25 29 2.15 0.49 0.57
35 30 2.59 0.55 0.64
45 30 2.96 0.63 0.73
55 30 3.30 0.71 0.82
65 30 3.60 0.77 0.89
•
Lt. Green
360°
25 29 4.24 0.49 0.56
35 30 5.08 0.54 0.63
45 30 5.78 0.62 0.71
55 30 6.39 0.68 0.79
65 30 6.92 0.74 0.85
 
PGP ULTRA / I-20 MPR-35 BEIGE NOZZLE PERFORMANCE DATA
Arc Pressure Radius Flow Precip in/hr
  PSI ft GPM
•
Beige
90°
25 32 1.40 0.53 0.61
35 34 1.67 0.56 0.64
45 35 1.92 0.60 0.70
55 35 2.13 0.67 0.77
65 35 2.31 0.73 0.84
•
Beige
120°
25 32 1.77 0.50 0.58
35 34 2.15 0.54 0.62
45 35 2.46 0.58 0.67
55 35 2.74 0.65 0.75
65 35 2.99 0.70 0.81
•
Beige
180°
25 32 2.75 0.52 0.60
35 34 3.33 0.55 0.64
45 35 3.81 0.60 0.69
55 35 4.23 0.66 0.77
65 35 4.62 0.73 0.84
•
Beige
360°
25 32 5.36 0.50 0.58
35 34 6.62 0.55 0.64
45 35 7.58 0.60 0.69
55 35 8.43 0.66 0.76
65 35 9.18 0.72 0.83

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CAD Installation Details

I-20-00 PGP-00 on grade with rigid riser and check valve DWG DXF PDF
I-20-00 PGP -00 On-Grade with Swivel Riser and Check Valve DWG DXF PDF
I-20-00 PGP-00 On-Grade with Rigid Riser DWG DXF PDF
I-20-04 PRB PGP-04-PRB with HSJ Swing Arm DWG DXF PDF
I-20-04-PRB PGP-04-PRB with Swing Arm DWG DXF PDF
I-20-06-PRB with HSJ Swing Arm DWG DXF PDF
I-20-06-PRB with Swing Arm DWG DXF PDF
I-20-12 with HSJ Swing Arm DWG DXF PDF
I-20-12 with Swing Arm DWG DXF PDF

CAD Installation Details

Training

Product Training
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Product Specialist
Hunter Product Specialist Program

The program covers the key benefits and competitive advantages of best-in-class Hunter irrigation products.Choose from two tracks to customize your learning experience according to the topics that are most important to you. The first track focuses on popular core products, while the second track covers advanced products.

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Title:
MPR-30 Nozzles
File:
mpr-30_nozzle.jpg
Classification:
Studio
Product Line:
Rotors
Products:
PGP® Ultra, I-20
Keywords:
rotor
,
nozzle
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By clicking download, you agree to our terms and conditions.

Photo Usage Disclaimer

Disclaimer: It is illegal to reproduce Hunter photographs or other copyrighted material without the express written permission of the company. When used and/or reproduced, photos must be accompanied by the credit line: "Photo courtesy of Hunter Industries Incorporated." Hunter photos may not be used in association with copy, logos, or other graphic elements that represent other manufacturers' products. If you are using Hunter photos to create any type of print or graphic piece or on a website, you must send a copy of your intended use to creative@hunterindustries.com. Hunter must approve the design prior to final production.

All images must be accompanied by the credit line "Photo courtesy of Hunter Industries Incorporated." The credit line must appear adjacent to the photo.

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Image
Title:
MPR-25 Nozzles
File:
mpr-25_nozzle.jpg
Classification:
Studio
Product Line:
Rotors
Products:
PGP® Ultra, I-20
Keywords:
rotor
,
nozzle
Image Page

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Medium Original
By clicking download, you agree to our terms and conditions.

Photo Usage Disclaimer

Disclaimer: It is illegal to reproduce Hunter photographs or other copyrighted material without the express written permission of the company. When used and/or reproduced, photos must be accompanied by the credit line: "Photo courtesy of Hunter Industries Incorporated." Hunter photos may not be used in association with copy, logos, or other graphic elements that represent other manufacturers' products. If you are using Hunter photos to create any type of print or graphic piece or on a website, you must send a copy of your intended use to creative@hunterindustries.com. Hunter must approve the design prior to final production.

All images must be accompanied by the credit line "Photo courtesy of Hunter Industries Incorporated." The credit line must appear adjacent to the photo.

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Title:
I-20 Reclaimed Water ID Cap
File:
i-20-r_clipped.jpg
Classification:
Studio
Product Line:
Rotors
Products:
I-20
Keywords:
rotor
,
cap
,
reclaimed
,
parts
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Medium Original
By clicking download, you agree to our terms and conditions.

Photo Usage Disclaimer

Disclaimer: It is illegal to reproduce Hunter photographs or other copyrighted material without the express written permission of the company. When used and/or reproduced, photos must be accompanied by the credit line: "Photo courtesy of Hunter Industries Incorporated." Hunter photos may not be used in association with copy, logos, or other graphic elements that represent other manufacturers' products. If you are using Hunter photos to create any type of print or graphic piece or on a website, you must send a copy of your intended use to creative@hunterindustries.com. Hunter must approve the design prior to final production.

All images must be accompanied by the credit line "Photo courtesy of Hunter Industries Incorporated." The credit line must appear adjacent to the photo.

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

View 1" and 1.5" Inlet Rotors >>

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 manufacturers' rotors are judged.

 

  SRM PGJ PGP-ADJ PGP® Ultra I-20
QUICK SPECS
Radius 15' - 34' 15' - 34' 22' - 52' 17' - 46' 17' - 46'
Flow Rate (GPM) 0.42 - 4.3 0.42 - 4.3 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 8 8 27 34 34
Precipitation Rate (in/hr) 0.6 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 Optional
Warranty 1 Year 2 Years 2 Years 5 Years 5 Years
ADVANCED FEATURES
Low-Angle Nozzle Choices    
Matched Precipitation Nozzles      
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        
Optional Pressure Regulated Body      
Applications
Residential
Commercial/Municipalities      
Athletic Fields        
High Vandalism Areas        
Low Pressure Areas  
Riser-Mounted Sprinklers    
Ground Cover and/or Shrubs    
Reclaimed Water    

 

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