I dont even know...its about 1/3 of an acre all told. I figure based on the shape of things that I would need 4 sprinkler heads with a 30 foot watering radius. Most of the pumps I have seen online have a minimum 2" output. I assume it would be easy enough to step that down to an inch or inch and a half. Do I need to run that line into a manifold to split off to the four sprinklers, or can I just run them in series?
You could bush down to 1-1/4" if you like just to run four sprinklers. One inch would work also, but you might as well plan for future use. I wouldn't shrink the size of the suction, but the output is ok. Most normal (average) sprinklers that go 30 foot like at least 40 psi and will put out roughly 2.5 gpm. The smallest gas pump I have would do about 35 psi at that volume.
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