Did I purchase the wrong size pump?

[Planecrazy]

Yes I was looking at the 1.5HP you have now. And 3 GPM sounds more like it. So 3 sprinklers at 3 GPM is only 9 GPM. A 1HP jet pump like the Goulds J10S will pump 12 GPM at 50 PSI. A J15S would put out 17 GPM at that depth and 50 PSI. Lifting from that depth and needing 50 PSI, a jet pump will be much better.

Thank you for the information. I have already purchased a Redlion 2HP pump. My plan is to hook up the Redlion pump. If I don't get the results I desire, I will search for the Goulds pump. Thanks again.

 

[Valveman]

Those kinds of pumps are made to pump a lot of water at very low pressure. Lifting from 18' I doubt that 2HP pump can even build 40 PSI. So it might work with a 15/35 pressure switch if that is enough pressure to do what you want.