I need to split an existing sprinkler zone into two zones. The issue I have is I cannot remove the valve that currently controls to flow. So, I want to have the system turn on both the original valve and one of the new.
For example. Current zone 5 becomes zones 5 and 6. When the controller kicks on zone 5 or 6, the original valve also opens.
All I can come up with is using 2 relays to make an logical OR circuit.
I am wondering what the best way to wire this up would be?