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south central IOWA | I recently seeded this 2.5 acre lawn and the people are in the same boat as you. I feel bad for them cause it's just not possible to water the entire thing properly with 2 spigots.
On rural water, in ground irrigation requires 1" supply line to run 4 sprinklers at a time but I think the psi is around 45-50 but don't quote me on that. Your higher psi with ¾" line might get you up to 3 or maybe 4 sprinklers but I have my doubts since half the psi can still run 2 per spigot with the ½" line.
I've got 1 customer pulling out of a pond with probably a similar setup as your pump. 1½" or 2" main line to the valves boxes, then from there it's 1" line to the sprinklers. He can run 10 at a time.
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Homeowner irrigation
