Irrigation: How big should the irrigation valve & main line be?

9 years ago

Hi,

I am planning to install an irrigation system. We are on city water with static pressure ranging from 66 to 74 PSI and the flow is about 11 GPM. The water mainline seems to be 3/4" copper.

I am in Canada and the ground freezes in winter. From what I read the best material for us would be Poly pipes. I also read that it is a good idea to have an irrigation main line slightly bigger that the main house line. Can any one tell me what size valve and Poly I should use.

Thank you in advance for your time and advices.

Comments (3)

homr
9 years ago
Keep it simple. 1" mainline (providing distance is not a factor) 1" valves. Stick to approx. 10 gpm
homr
9 years ago
Keep it simple. 1" mainline (providing distance is not a factor) 1" valves. Stick to approx. 10 gpm
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Jimmy Forester
9 years ago
I ran 1" on mine even though I only have a 3/4 main in the house, that is so corroded up, it probably only is really 1/2". I did it for 2 reasons. I couldn't afford to lose any more flow on my already limited supply and the other reason is someday in the future, the mainline will eventually be replaced with something bigger and my irrigation system will already be ready for it.

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Irrigation: How big should the irrigation valve & main line be?

Comments (3)

homr

homr

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