<a href=showthread.php?s=&postid=14490225#post14490225 target=_blank>Originally posted</a> by Dudester
Personally I think Sched 80 is only necessary for the bulkheads. Most of our applications don't require the high-pressure security that Sched 80 affords. I particularly don't like the fact that Sched 80 pipe has a smaller inner diameter than Sched 40, which restricts flow. All that being said, Sched 80 pipe does come in gray in the large local hardware stores, so it's easy to get without mail ordering which is often necessary for gray Sched 40. And you know how much I like gray PVC Steve!