Suction side of pump or discharge ? Chlorine and Copper usually not a good combo in most Water treatment feed lines I have been around most were Schedule 80 PVC with glues that rated for chlorine. Looks like cavitaion to me the 90 is not helping. Just a guess. If its disharge on the pump any air bleeds installed?

Last edited by kk alaska; 03/31/21.
kk alaska

Alaska 7 months of winter then 5 months of tourists