I would like to trench in an irrigation pipe from the house to 20 Pecan trees. I want to get some of that black pipe in long rolls, but the guy at the hardware store said that was for dairy farm use only and not able to handle PSI for home use.
Another hardware guy said my only choice is PVC or steel.
What PSI rating do I need? I saw TSC has some rated at 160 PSI, is that high enough?