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Irrigation / Re: Large Irrigation system
« Last post by Cary Austin on January 02, 2024, 03:54:04 PM »29 GPM is really too much for a 1-25 GPM CSV1A. But if the pump is large enough you can squirt that much water through it. Reduced pressure falloff is how much higher you have to set the CSV pressure at 3 GPM flow to get what you want at 29 GPM flow. With 30 PSI of falloff the CSV would need to be set at 90 PSI (using a 80/100 pressure switch) to get 60 PSI at 29 GPM flow for the big zones. There will also be more than 30 PSI friction loss, which means the pump must be able to do 29 GPM at 90 PSI to get 29 GPM at 60 PSI out of the CSV1A.
The CSV125 or the CSV3A2T would be much better for a 29 GPM zone/pump as they do not have reduced pressure falloff, and are larger valves with much less friction loss at 29 GPM flow.
If you can split up the zones and make them all smaller than 20 GPM the CSV1A will work fine.
The CSV125 or the CSV3A2T would be much better for a 29 GPM zone/pump as they do not have reduced pressure falloff, and are larger valves with much less friction loss at 29 GPM flow.
If you can split up the zones and make them all smaller than 20 GPM the CSV1A will work fine.