Jayco RV Utility Center Theory Of Operation

OMG could the utility center in the Jayco 26Y be any more confusing?

This research and these posts should make it easier to comprehend? 

https://www.jaycoowners.com/forums/f5/utility-manifold-valves-81133.html#post909713

https://www.jaycoowners.com/forums/f5/utility-manifold-valves-81133.html#post912067