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matt_brown_1

New Member

Posts: 3

Location: USA

1

Monday, June 19th 2006, 12:12pm

how many heads per circut?

Hi,

I'm trying to figure out how many heads I can have per circut to cover my back / front yard.

I have 70 PSI and 36 GPM at the point where my valves / manifold will connect. I am planning on using the hunter PGP-ADJ (LA) in the back yard ranging from 25' - 33' radius. Using 1" PCV to the manifold and then 1" Poly to the heads and funny pipe from poly to heads. I am using the Hunter PGV-101MB with flow control for my valves.

At this point I'm thinking 4 - 5 PGP-ADJ's for zones BLUE/PURPLE/GREEN and 12 small spray heads for zone RED (or maybe split to 2 zones). I have not done any shrub / flowerbed zones yet.

Drawing of house http://www.mjbdesignz.com/temp/house.jpg (I'm a noob)

I have no idea if my caculations are correct on how many heads I can get per zone... any advice would be very appriciated.

Thanks,
Matt Brown
--
Matt

Wet_Boots

Supreme Member

Posts: 4,060

Location: Metro NYC

2

Monday, June 19th 2006, 3:39pm

One more head for the inside corner near the house, in back. Use regular PGP nozzles, unless you live in a high-wind region. Figure a flow of closer to 15 gpm. Then you can use the one inch valves and pipe.

matt_brown_1

New Member

Posts: 3

Location: USA

3

Monday, June 19th 2006, 8:14pm

adding the extra head in the back must be for double coverage in that area... I was thinking maybe I should do that.

Will I be ok using the PGP-ADJ (LA) in the front or should I look at something else? I am in a high wind area so I think I should stick with the low angle heads.

Is the flow of closer to 15gpm because of the length of the poly pipe?


With the PSI of 70 and the GPM of 36, do you think I will be ok with (12) spray heads on the red circut? Or should I split that into 2 circuts?

Thanks for any help you can give,
Matt, Cheney, WA
--
Matt

xpedient

Active Member

Posts: 43

Location: USA

4

Sunday, June 25th 2006, 7:37pm

Well take how much each head uses (GPM) and add them up. If they total to less than 30 GPM then you are fine. Are you sure you have 36 GPM? Are you running off a fire hydrant?
Xpedient Irrigation Inc. is a locally owned company that delivers solutions to all your sprinker system needs.
We service both residential and light commercial customers.

We offer: Complete installations
All types of Repairs
Summer start-ups
Evaluation of coverage
Troubleshooting
Pressure loss
Vacuum breaker repair
Drip/Low-Pressure Irrigation Installation and Repair
and Much More!

If you would like free consultation or advice for your property, please feel free to contact us with any questions!

Call or email us now to schedule your summer-start up!


http://www.highlandsranch.com/class/display.html?id=3537

matt_brown_1

New Member

Posts: 3

Location: USA

5

Monday, June 26th 2006, 12:42pm

I checked it twice with an 18 gallon tub, only took 28-29 seconds to fill each time. It was coming out so fast we had trouble keeping it in the tub. I came off the main with 1 inch pipe, into my double check backflow and then to just before my mainifold. From there I hooked up a 10' piece of 1" poly and ran the GPM test. I have about 70PSI at the same spot.

Think I have too much water pressure / GPM? I bought valves with flow control.

Here's what I think is my final layout for the sprinkler system... with GPM calculated.
http://www.mjbdesignz.com/temp/house_v2.jpg
--
Matt

xpedient

Active Member

Posts: 43

Location: USA

6

Monday, June 26th 2006, 5:41pm

cool, looks good. I would add a head in the back doing a full 360. There are some spots right now that arent getting enough water that should be solved by adding a full circle head..
Xpedient Irrigation Inc. is a locally owned company that delivers solutions to all your sprinker system needs.
We service both residential and light commercial customers.

We offer: Complete installations
All types of Repairs
Summer start-ups
Evaluation of coverage
Troubleshooting
Pressure loss
Vacuum breaker repair
Drip/Low-Pressure Irrigation Installation and Repair
and Much More!

If you would like free consultation or advice for your property, please feel free to contact us with any questions!

Call or email us now to schedule your summer-start up!


http://www.highlandsranch.com/class/display.html?id=3537

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