I have a pump on station 8. I have 5 zones 1-5. I use the master on adjust to 15s and master off adjust to -15s.
This way when zone 1 comes on, the pump kicks on 15s later.
then when zone1 shuts off, it actually turns off the pump 15s prior THEN turn off the zone 1 valve.
Here is my fear. what happens if one of the valves breaks and doesn’t turn on? then my pump kicks on and all zones are closed? Water pressure builds up and what pump breaks? pipe burst? any failsafe for this?
edit: is there some water pressure normally closed fail-safe valve? something that would auto open if water pressure increased above what it would be if another valve opened?