If you have a stand to copy or modify as desired how would a sketch help?
You are right, just wanted to see if someone knows or has done it before.
My last system had one hot and one cold supply from the tanks to all 4 pumps. If you had to work on one bay, all 4 bays would have to be shut off. So I made sure the new design incorporated enough valves to isolate the problem bay without turning off the rest of the bays...It seemed like a simple solution to me.
IB Washing, good call. Did you used to be a detective? There's a lot of used stuff out there now.