Hello, I'm looking at setting up an irrigation system in my greenhouse and was looking for some input. I have 4 benches about 72' long each, each bench needs roughly 140 drippers/lines providing around 1L/minute. That's a total of 560L/min.
My pump is 2.5hp and has a max flow of 8800G/Hr. If I have a 2" line 30' long to get water to each table, would you use 4x2" branch lines up and along the tables or should that be reduced to 1.5"?
Ideally, the tables would each have their own ball valve for maintenance and potentially a few on the tables as well for pressure control.
The water reservoir is about 4.5' deep in the ground and the tables are 36" tall. So I believe total head is roughly 17'.
The attached picture is the chart provided though it doesn't show the 2.5hp model, just the 1.5-2.