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hect911
07-14-2006, 07:49 PM
This is the first time that I use rotary heads.

I am watering a 64' x 22 area (all grass) and planning on using PGJ rotors spaced at 22 feet apart.

That comes out to 4 quarters and 4 half circles. with the #1.5 nozzle each.
1.5 GPM X 8 heads =12 GPM.


So I read the previous thread on rotary nozzle questons and it stated that the half circle nozzles need to be twice the size of the quarter nozzles to make sure you have a MPR.

Do you guys recommend I just keep the #1.5 nozzle on all heads or replace the half circles with the # 3 nozzle.

Any help is greatly appreciated.

Thanks
Hector G.
JeffY
07-14-2006, 08:22 PM
You can put 1 gal nozzles in the corners and 2 gal nozzles in the half circles. I know the 1 gal nozzles only throw 19 feet, but you'll also be covered by the half circle heads that will help throw into the corner as well.
Dirty Water
07-14-2006, 08:53 PM
I'd use PGP's with that spacing.
PurpHaze
07-14-2006, 10:11 PM
I'd use PGP's with that spacing.

Never seen a PGJ throw that far??? :)
Dirty Water
07-14-2006, 10:12 PM
Never seen a PGJ throw that far??? :)

No, I just dislike mini-rotors (PGM anyone?), and at that spacing, you could easily do it with a PGP and be able to sleep at night.
PurpHaze
07-14-2006, 10:20 PM
No, I just dislike mini-rotors (PGM anyone?)

Main problem I found with the PGM was that after they had run for some time their adjustment "screw" wouldn't function any longer; just couldn't readjust them if they got out of kilter for some reason.
hect911
07-14-2006, 11:53 PM
You can put 1 gal nozzles in the corners and 2 gal nozzles in the half circles. I know the 1 gal nozzles only throw 19 feet, but you'll also be covered by the half circle heads that will help throw into the corner as well.

It makes sense to use the 1 gpm nozzle and the 2 gpm nozzle with 22' spacing all in one zone.:cool2: