the item that I hope will save me the most flow is the 90° sweep ... I found it in the electrical isle, but it is plain 1" schedule 40 pvc
, just gray instead of white ... It does a complete 90 degree bend over about 8", which I'll use to transition from the vertical pipe coming up from the pump to the horizontal manifold for the spray bars.
although it takes a lot more space than a 90 or even 2 45s, it's perfectly smooth on the inside, no obstructions
also in piping from 1.5" to 3" they had something called a long 90 elbow, which looked similar to the sweep on the inside, but was more compact ... I could not find one in 1" piping however.