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K-Rain MiniPro Rotor 4" | 13003

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K-Rain MiniPro Rotor 4"

  • K-Rain MiniPro Rotor
  • Application: Residential
  • Pop-Up Height: 4 inches

K-Rain MiniPro Rotor

Features & Benefits

Perfect for small lawn and landscape areas, the MINIPROs uniform spray pattern makes it an economical replacement for fixed sprays. Since the MINIPRO nozzle flow rates are matched to the PROPLUS, it can be used in the same zone with full size rotors. When considering the industry leading MINIPRO gear driven rotor, think EFFICIENCY. With a wide selection of nozzles, the MINIPRO brings flexibility to system design.

The MiniPro is a gear-driven, rotary type sprinkler, capable of covering an area of 17' to 30' (5.2 to 9.1 M) radius at nozzle pressure of 30 to 50 PSI (2.1 to 3.4 bar) with a discharge rate of .75 to 3.3 GPM (2.84 to 12.5 LPM). The MiniPro is supplied with five (5) numerically coded interchangeable nozzles. Sprinkler nozzle trajectory is 26. The sprinkler has a stainless steel radius adjustment screw.

The MiniPro provides arc adjustment from 40 to 360. Sprinkler arc setting adjustment is carried out by rotation of a flat blade screwdriver within top cover adjustment slot. Sprinkler coverage pattern is indicated by degree graduations and an arrow located on top of the sprinkler. The MiniPro is adjustable in all phases of installation (i.e., before installation, after installation while static, and after installation while in operation).

  • Revolutionary Patented Easy Arc Set Simplified arc set allows for wet or dry adjustment in seconds
  • 1/2" Inlet Replaces all standard mini rotors and pop-up sprays
  • 2N1 Adjustable or Continuous Rotation - Provides a full range of adjustment from 40 to a continuous full circle.
  • Patented Arc Set Degree Markings Clearly indicates the current watering pattern and simplifies arc set adjustment
  • Arc Memory Clutch Prevents internal gear damage and returns rotor to its prior setting automatically if nozzle turret is forced past its stop.
  • Time Proven Patented Reversing Mechanism - Assures continuous reverse and return...over a 20 year history.
  • Ratcheting Riser Allows for easy adjustment of your left starting position with a simple turn of the riser.
  • Rubber Cover Seals out dirt and increases product durability
  • Wide Selection of Nozzles - Provides flexibility in system design.
  • Optional Check Valve - Prevents low head drainage.

Product Details

  • Inlet: 1/2" Threaded NPT
  • Arc Adjustment Range: 40 to 360
  • Flow Range: .75-3.3 GPM
  • Pressure Rating: 20-70 PSI
  • Precipitation Rate: .22 to .41 Inches Per Hour
  • (Depending on Spacing and Nozzle Used)
  • Overall Height (Popped Down): 6"
  • Recommended Spacing: 17' to 28'
  • Radius: 17' to 30'
  • Nozzle Trajectory: 26
  • Riser Height: 4", 6" or 12"

MiniPro Gear Driven Sprinkler Setting Overview

*For more information about how to change a nozzle, set the arc adjustment or install the sprinkler, see the "Instructions" PDF under the "Owner's Manuals" tab.

K-Rain MiniPro Rotor
Nozzle Pressure PSI Radius ft. Flow GPM Precip In/h Precip In/h
30 18' 0.8 .45 .51
40 19' 0.8 .43 .49
50 20' 0.9 .43 .50
30 26' 0.9 .26 .30
40 27' 1.2 .32 .37
50 27' 1.3 .34 .40
#1.5 Pre-installed
30 27' 1.5 .34 .40
40 27' 1.8 .32 .37
50 28' 2.0 .34 .39
30 29' 2.0 .39 .44
40 30' 2.3 .42 .49
50 31' 2.7 .42 .49
30 32' 3.0 .48 .55
40 33' 3.4 .45 .51
50 33' 3.8 .52 .60
*All precipitation rates calculated for 180° operation. For the precipitation rate for a 360° sprinkler, divide by 2.
Flow Rate:
.75 - 3.3 GPM
Spray Pattern:
40 - 360
Spray Radius (ft.):
17 - 30
Riser Material:
Pressure Range (PSI):
Inlet Size:
5 Years
Product Type:
Pop-Up Height:
Check Valve:
No Check Valve
Riser Material:
Radius (ft.):
17' - 30'
Part Circle Adjustable (40 - 360)
3.6 / 5.0
5 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great head
I love Krain products
May 23, 2014
over 3 years ago
We had 1 Sprinkler head at the of the line that was starved so much of pressure it would not work. I had tried Mini paw, rotor heads, and a 180 degree pop up. I read this head worked with as little as 20 pounds of pressure. I thought I would give it a try. I restricted the flow a little on a pop up that was on line and installed this head, it worked perfect. I admit this station had too many heads (9 total), but it worked great.
May 4, 2020
3 months ago
Works just fine. Would like to see a better description of spray patterns on the website
July 6, 2017
over 3 years ago
K Rain Mini Pro
The K Rain was very complicated to set up correctly. I eventually gave up and switched to a Toro T5 Rapid Set.
June 1, 2020
2 months ago
Item came without “key” even though it said it was included. Arrived scratched up. Looks used. Emailed customer service- no response. Disappointed.
June 29, 2020
1 month ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 10 questions Browse 10 questions and 28 answers
Why did you choose this?
SprinklerWarehouse.com Store
B I on Jul 16, 2018
Needed parts for repairs
B O on Jul 10, 2017
B I on Jul 16, 2018
Type used on my irrigation systerm except changed one for more water in certain part of lawn.
D L on May 12, 2018
Needed parts for repairs
B O on Jul 10, 2017
For use along drive instead of constant spray
Chris on Jul 6, 2017
Fits 1/2" inlet. Suitable for smelt to mid range rotor applications.
sisupoika on May 5, 2017
past customer
David W on Apr 24, 2017
Good for those areas between a full size rotor and spray
Michael K on Mar 2, 2017
Type used on my irrigation systerm except changed one for more water in certain part of lawn.
D L on May 12, 2018
For use along drive instead of constant spray
Chris on Jul 6, 2017
Where can I get djustment instructions for my Krain 13003 sprinkler head?
Xavier P on Jul 30, 2013
Place your finger on the top center of the nozzle turret. Rotate the turret
to the right until it stops and then back to the left until it stops. Notice
the position of the nozzle arrow. This is the “Left Start” position. The
sprinkler will begin spraying from this position and rotate clockwise until
it reaches the right “Arc Stop”.
Insert the K-Key in the keyhole on the top of the nozzle turret and turn
the key 1/4 turn to insure that the key does not slip out of the keyhole
when you pull it up. Being careful not to allow the nozzle turret to turn,
firmly pull up the entire spring-loaded riser. Hold the lower riser assembly
up with one hand. Now turn only the lower riser clockwise or counter-
clockwise until the nozzle arrow is pointing where you want the sprinkler
to begin spraying.
Insert the K-Key or a small flat blade screwdriver into the Arc Set
Adjustment slot. Turn clockwise to increase the arc or counter-clockwise
to decrease the arc.
The arc set arrow in the center of the nozzle turret rotates
to show the current setting.

Hope this helps,
you can also call KRAIN, they are very helpful
how do I order the check-valve option for the Mini-Pro series?
Ray C on Jul 7, 2015
Is this a good replacement rotor for an old R-50 rain bird?
Rod W on Apr 13, 2014
BEST ANSWER: Not the best. The MiniPro has a 1/2" inlet where the R-50 has a 3/4". Not only that, the MiniPro is slightly shorter, and will need a bigger than standard nozzle to match the water output of the R-50. It can be done, but I would go with a rotor that has the same (3/4") inlet and that is about the same height as your R-50. Several others would work as well without adapting.
do you have instuctions I can read for the K rain 13003 4in minipro adjustable rotor?
A shopper on Jan 6, 2015
BEST ANSWER: You can get them from K-Rain's website - search web for their site, then click professional rotars and then select minipro.
how much water do these heads use ?
Carl F on Apr 12, 2012
BEST ANSWER: Same as any other sprinkler head....just sprays the water out farther and in any part of a 360 degree arc you choose.
The watyer flow is controlled mostlyu by the size of your PVC line that feeds the water. It is suggested that you not mix standard heads with these rotors on the same valve because the water flow-ot of different design heads will be different.
I mix some and find thay are ok, I have eight heads for a single control valve and mix 6 rptors with two standard heads .
how can I get a manule on how to adjust this sprinkler head?
jay P on Jun 18, 2012
BEST ANSWER: Since I have lawn irrigation service I have not had to deal with trying to adjust the heads.
do you have the instruction for the k-rain mini pro adjustable rotor?sorry you gave it to me but I x out of it before I could print it off sorry.
A shopper on Jan 6, 2015
BEST ANSWER: Just go to the manufacturers website and put the model number in and u can reprint the directions out. Thanks
I plan on ordering 20 of the k rain mini pro sprinklers. Does each sprinkler come with its own set of nozzles?
A shopper on Oct 20, 2015
BEST ANSWER: Yes. Each head comes with its own set of nozzles.
Are these 13003 heads the same as k-1 heads?
thanks Al
Al G on Oct 25, 2013
BEST ANSWER: The MiniPro heads are not the same as the K1 heads but they appear to be virtually identical. I have both models and as far as I can tell, the only difference is the name on the top and the MiniPro have a gray band around the nozzle rather than the black.

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