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Rain Bird Adjustable Arc Impact Rotor 3" | 2045-PJ

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Sale Price $14.98
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Rain Bird 2045-PJ Pop-Up Impact Rotor

The Maxi-Paw's powerful throw breaks up the stream of water for more close-in watering. It is used for slope and large-area, above-grade applications. The Maxi-Paw has an adjustable arm spring for low-gallonage and low-pressure operation. This feature-packed impact rotor portrays superior performance for maximum coverage of large-area landscapes.

  • Includes:
    • 1 complete set of standard nozzles per rotor
    • 1 Set of Instructions (1 per shipment)
  • Proven impact drive.
  • Straight-through flow for superior performance in dirty water.
  • Five interchangeable; color-coded MPR nozzles with standard trajectory.
  • Two interchangeable low angle (LA) nozzles.
  • Easy to adjust; easy to service.
  • No tools required to change nozzles.
  • Double-weighted arm for slower rotation and increased distance of throw.
  • Powerful reverse action.
  • Adjustable arm spring for low-pressure and low-gallonage operation.
  • Full-circle or part-circle arc 20 degrees to 340 degrees.
  • Precision Jet tube (PJ) minimizes side splash.
  • Hooded bearing for longer life.
  • Distance control diffuser pin allows up to 25% radius reduction without changing nozzles.
  • FP trip for full- or part-circle operation.
  • Precipitation Rate: 0.28 to 0.92 inches per hour (7 to 24 mm/h)
  • Radius: 22 to 45 feet (6;7 to 13;7 m)
  • Radius with Radius Reduction Screw: 18 feet (5;4 m)
  • Pressure: 25 to 60 psi (1;7 to 4;1 Bars)
  • Flow: 1.5 to 8.4 GPM (0;34 to 1;91 m3/h; 0;09 to 0;53 l/s)
  • 1/2" (15/21) male threaded inlet nozzles: 06-red; 07-black; 08-blue; 10-yellow; 12-beige
  • Low angle (LA) nozzles: 07 LA-black; 10 LA-yellow
  • Nozzle outlet trajectory is 23 degrees for 06; 07; 08; 10; and 12 nozzles.
  • LA nozzle outlet trajectory is 11 degrees.
  • For 08 nozzle; highest point of stream is 6 feet (1;8 m) above grade.
Impact Rotor
Flow Rate:
1.5 - 8.4 GPM
Trajectory Angle:
Spray Pattern:
20 - 340
Spray Radius (ft.):
22 - 45
Riser Material:
Pop-Up Height:
Pressure Range (PSI):
Body Height:
Inlet Size:
1/2 or 3/4
3 Years
Rain Bird
Pop-Up Height:
Part Circle Adjustable (20 - 340)
Radius (ft.):
22' - 45'
Riser Material:
Check Valve:
No Check Valve
Average Rating:
4 Stars , 3 Stars , 2 Stars , 1 Star
4.5 / 5.0
12 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Maxi-Paw fix
This impact rotor makes repair of maxi-paw quick and painless especially having around 90 like I do .Good price.
May 30, 2017
1 year ago
Wrong product
I ordered these but I ordered the wrong product. my fault however for a 200 dollar order they charged me 60 just to restock when I sent back...
August 15, 2017
1 year ago
Excellent piece
Like different nozzles. Use them to water horse arena
October 15, 2018
5 months ago
Including all the different nozzle sizes allows for good flexibility for different applications..
July 3, 2017
1 year ago
Rain Bird 2045-PJ Maxi
Have used these for a couple of weeks now without a single problem. I really like the choice of nozzles that come with the sprinkler head, as you can size your nozzles to your well output.
July 2, 2018
9 months ago
Domestic workhorse
This head has been my favorite for many years. Easy to install and adjust . . . no Mickey Mouse springs and cute adjustments . . . simple easy to work with in the hot sun or rain on your hands and knees. Exposed parts don't crumble in the UV like many plastic heads. Only gripe is that the spray adjustment screw tends to work loose. A good workhorse. Buy 'em, and from Sprinkler Warehouse, as I have done for years now.
July 4, 2018
8 months ago
Longest lasting
Works well even though using gritty irrigation water with only 20 lbs pressure.
September 1, 2018
7 months ago
Ended up getting 50 of these maxi-birds for our HOA . So many nozzle options for any watering situation . The service at Sprinkler Warehouse is second to none . Prices were hugely competitive with prompt shipping . You can't go wrong doing business with Sprinkler Warehouse .
June 27, 2017
1 year ago
Top of the line
Best sprinkler head we have used. Many different spray options help with different watering needs. Will be the only sprinkler head supplier we use.
March 22, 2018
1 year ago
Excellent product
Do not bother with the entry level Rainbird or Champion impact sprinklers, upgrade immediately to the maxi bird Hides well, no annoying colors to catch your eye. Distributes the water well, all the water doesn't end up at the end of the stream. Very sensitive to low pressure, just won't work right
July 28, 2014
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 29 questions Browse 29 questions and 92 answers
Why did you choose this?
SprinklerWarehouse.com Store
We use these sprinklers for Aerobic Treatment Plants. Sewer
B R on Nov 20, 2018
it works excellent and is very durable. use it to water logs at a sawmill from May until November.
Stephen L on Nov 2, 2018
We use these sprinklers for Aerobic Treatment Plants. Sewer
B R on Nov 20, 2018
These are the spray nozzles that we use. Plus the pricing. This is a pretty good price for the nozzles. I am hoping that I have a great experience with working with your company. Look forward to working with you.

Thank You,
Cynthia A. Keenan
W A on Nov 8, 2018
it works excellent and is very durable. use it to water logs at a sawmill from May until November.
Stephen L on Nov 2, 2018
adjustable nozzles and passed expierance
david M on Oct 8, 2018
Nozzles can be changed. Use for Horse Arena to wet grounds and do not need a lot of water during rainy seasons. Have used these for about 10 years at home and arena and really like them
Michael R on Sep 29, 2018
Works great for me.
A Z on Sep 10, 2018
seems to be more resistant to the sand and grit in the water continuing to operate without constant cleaning
S U on Sep 5, 2018
I have 36 of these to maintain....
M P on Sep 3, 2018
Superior Performance
K M on Aug 13, 2018
gritty irrigation water, although it destroys the rotor, the Rain Bird out lasts all others that I have tried.
John O on Aug 11, 2018
replacing orchard sprinklers
P J on Aug 1, 2018
very dependable and easy to clean
W M on Jul 25, 2018
Saved money plus avoided waste
C R on Jul 15, 2018
These are good sprinklers that work every time and under low or high water pressure. Easy to adjust easy to replace I have some of these that are 10 years old and working just fine.
Randy H on Jul 12, 2018
enjoy these heads in temp sprinkler systems. use above ground installation on 12 inch riseers. when done with job, break down and move on, will handle dirty water and easy to clean
J A on Jul 5, 2018
These are a great product,perform flawlessly,and last a long time. Probably the best impact sprinklers made. Hands .dowm.
J B on May 30, 2018
I have many years experience with various heads these are consistently the best
I N on May 29, 2018
Filling a customer's order request
M E on May 14, 2018
Need a quality sprinkler for sloped back yard with low water pressure, rotor valves do not seem to provide good coverage
F I on Apr 18, 2018
Have used it at the Nursery for YEARS
Janet P on Apr 16, 2018
I like it
G D on Apr 10, 2018
I work at a Nursery and we order 100's of them they are good for what we need them for
Janet P on Apr 4, 2018
I have used this railbird for several years and like it better than any other railbird that I have tried.
C H on Mar 26, 2018
We use this on our Aerobic Systems. Best value least amount of having to replace sprinklers.
B R on Mar 13, 2018
what we have used for years
M K on Mar 7, 2018
Replacement for existing.
A D on Jan 2, 2018
To replace impact rotor sprinklers not working well.
D M on Sep 16, 2017
need sprinklers
L Y on Sep 13, 2017
To see if a replacement rotor works in place of a current rotor that is not rotating 360 degrees.
Mark T on Jul 17, 2017
works well at very low pressure
Kevin M on Jul 15, 2017
I needed a full-circle 1/2" sprinkler head that is adjustable for low water pressure.
D A on Jul 8, 2017
Replace worn out sprinkler heads
D P on Jun 14, 2017
Have had great success with these sprinklers for many years.
A Z on Jun 4, 2017
Distance; various nozzles.
Debbie K on May 5, 2017
Used these in the past. Easy to install and setup. Has good water delivery and different nozzles.
Dan G on Apr 30, 2017
Because my husband told me this was the one he needed
P E on Apr 29, 2017
Recommended by your staff
T A on Apr 24, 2017
Match existing sprinklers. They are easy to adjust.
H O on Apr 23, 2017
I put in Areobic treatment plants (sewer systems) and these work the best for me.
B R on Mar 27, 2017
These are the spray nozzles that we use. Plus the pricing. This is a pretty good price for the nozzles. I am hoping that I have a great experience with working with your company. Look forward to working with you.

Thank You,
Cynthia A. Keenan
W A on Nov 8, 2018
adjustable nozzles and passed expierance
david M on Oct 8, 2018
I need some impact adjustable circle low volume sprinkler heads less than 2 GPM at 30 psi with as large a diameter as possible?
Ron B on Jul 2, 2015
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Did this product last more than 1-season?
J F on Apr 18, 2011
BEST ANSWER: Yes, This model always lasts more than one year. I can expect about 4 - 5 years out one of these. First of all, this thing is mostly plastic and it does fail.
Out of all the plastic models, this is the most durable and delivers the most dependable service. After all the experience with the other junk on the market, at least for the price and being plastic, this model
is now the only impact rotor I will order. They do get clogged with algae and particles, but are easily cleaned. I keep spares so I can rotate in and out because I have an algae in my lines. (white pvc creates algae)
Maxi-Paw nozzle set -- When I go to checkout, this term came up and said I needed to fill that in-- what is this and where is it?
A shopper on Jun 1, 2013
BEST ANSWER: A set of different GPM nozzles to be able to adjust your flow rate to the amount of water
to be laid down. a sprinkler that is set to a quarter circle pattern will put down water in the small area at a rate of 4 times a full circle pattern these nozzles allow some rate adjustment to compensate for this
Will this work as a replacement rotor for the Maxi Paw 2045A pop up sprinkler? If so, does the rotor come with the cover?
Dan G on Apr 19, 2016
BEST ANSWER: The rotor does not come with the cover. It is the same rotor, but I have never had to replace one in a pop up sprinkler. Don't be afraid to try. If the rotor is threaded into the pop up piston, simply unscrew the rotor and replace. I believe the cover has a removeable plug in the center that you can then pinch the tabs on the top of the rotor to remove and replace the cover.
can the legth of spray be abjusted ?
Lake R on Sep 25, 2011
BEST ANSWER: Yes, there is a needle valve just downstream of the nozzle that screws in or out which adjusts the length of spray.
It is like holding your finger in a hose stream.
This causes the stream to shorten or lengthen depending on how far the needle is inserted which disrupts the flow a little or a lot.
where is your location ?
A shopper on Jul 28, 2017
BEST ANSWER: I believe they are located in Texas. Look under about us or contact us on their website. They products out quickly and at a competitive price.
Is there any repair kits for these?
Doug J on Jun 30, 2015
BEST ANSWER: I don't think there's a repair kit but I believe you might be able to get worn out washers for the sprinkler. However, it's likely the plastic where the impact arm hits is already worn out by the time the washers are worn out. I use the 2045-PJ Maxi-Bird sprinkler to replace the sprinkler in the Max-Paw pop-up sprinkler.
I have 45 psi and ~6 gpm flow; does this sprinkler come with the nozzles included?
A shopper on Apr 11, 2012
BEST ANSWER: We buy 20 at a time and they do come with all nozzles.
do all the sprinklers unscrew in the maxi paw rotor?
A shopper on Sep 8, 2018
BEST ANSWER: If your referring to the rotor head - yes, it can be removed from the threaded base.
I use these rotor heads to replace worn out units without having to purchase the whole sprinkler.
how are these heads removed ?
A shopper on Jun 28, 2016
BEST ANSWER: With a special sprinkler wrench. Sometimes they spin out easy and sometimes you have to work at it.
How hard is it to replace the internals of the Maxipaw?
A shopper on Jun 30, 2015
BEST ANSWER: This is the most reliable plastic sprinkler head I have ever used and have not had a need to replace any parts. They work great. The manufacturer may have better input
Is there a replacemnt internals for the Maxi paw canister and if so what is its name and number?
JOhn B on Jul 20, 2014
BEST ANSWER: The Sprinkler Warehouse people were entirely clueless. They were unable to help me at all. These heads i bought, that they said i needed, don't fit. So, I now have 6 or so heads that don't work. I recommend dealing with RainBird corporate, not SW.
What should the spacing be between these?
A shopper on Jul 9, 2013

I have mine spaced @ 45' but spacing really depends on flow and pressure. This web interface wont let me attach a link, but if you Google maxi-paw data sheet, you can get the spec sheet that shows the specs. Hope this helps.
Does the yellow nozzle not come standard with this unit?
A shopper on Jul 2, 2012
BEST ANSWER: The blue is the standard nozzle that comes on this unit. You do get the others nozzles free, when you check the option for the nozzle.
Larry M
these impact heads will fit the LG-3 mini-paw impact sprinkler ?
A shopper on Apr 24, 2017
BEST ANSWER: Hi, the 2045-PJ will not replace the internal assembly on the LG-3. Thanks!
I want to install a sprinkler system that i can use in the backyard for my kids to get wet in the hot weather. What system do I need?
Annie on Feb 21, 2017
BEST ANSWER: I would not use this sprinkler. It shoots out a single stream that rotates around a circle or an adjustable arc. The stream can be pretty rough if it is pointed at you. I'd recommend an adjustable fan nuzzler a mp-rotator with a radius that fits your yard. They will provide a more continuous flow and a much gentler experience than an impact rotor.
LG-3 model?
A shopper on Sep 6, 2013
BEST ANSWER: I would possibly answer, but what is the question?
Is this part a replacement for the internals of a MAXPAW ? I'm confused, please straighten me out.
Notfordman D on Aug 2, 2012
BEST ANSWER: It is the basically the same impact assembly but is designed for use on risers, not in the Maxi Paw
While adjusting the wire ring for left and right stopping, I pulled the wire ring off
I've been trying and trying to get it back, is there a special way to fix it ?

Thank You,

Dick Wingard.
Dickie D on Sep 2, 2011
BEST ANSWER: Try putting the body GENTLY in a vise, then use 2 pair of pliers (one in each hand) to hold the spring open as you fit it in the groove.
I'm buying Rain Bird Maxi-Paw AG-5 sprinklers to replace existing heads on a grey water system when they wear out. At present, I purchase the entire head/body - unscrew the internal impact sprinkler & place into an older existing body...throwing out the new exterior body. This seems like a wasteful/pricey way to do things ...do you sell the EXACT interior impact sprinkler part only?
Andy B on Jul 22, 2017
How do you adjust the stream? Mine is just a stream of water and doent spray like the rest of them
Stacey C on Apr 4, 2016
Need to replace cap and head of said model. Head still functional but tabs that connect the cap are busted. Found the necessaries on your site except the caps. Do you carry the caps?
Paul B on Oct 16, 2015
will this fit in the 2045 housing case?
A shopper on Jul 29, 2015
I have trouble with plastic sprinklers plugging up because of small nozzle hole, , is the nozzle size large enough that small grit from a canal can pass through it?
C Dean T on Jun 5, 2012
Will this rotor fit maxi paw AG5?
A shopper on Aug 24, 2011
Bob P on Aug 17, 2011
is this the replacement impact rotor "guts" for the standard seal-a-matic pop-up rotor?
A shopper on Sep 5, 2012
I use these to rebuild my worn out Maxi-Bird pop-up sprinklers.
Why buy the lid and canister when all you need is the sprinkler mechanism.
How do you adjust pattern of spray?
A shopper on Aug 6, 2011
BEST ANSWER: hi am from mauritius
i use the domestic network to irrigate my field approx 0.4221ha
the hose diameter is one cm
will the rain bird 2045 pj maxi bird be ok