Good day sirs!
I am an electrical engineer working as building maintenance engineer.. Well this one time, an outside auditor surveyed the building and noticed on this particular set-up (see figure). The visiting engineer suggested we redo the whole set-up as it does not work well with positive displacements pumps. I had no idea what he was talking about but decided to raise it to my bosses. Hope your expertise and experience could help me on this one.