I've done a bunch of research and I cannot figure out if I need a backflow/filter/pressure reducer for each zone or if I can get away with having the backflow/filter/pressure reducer at the main valve (right at the hose spigot) and then just use a valve for each zone.
Here's my setup:
My water source is a hose spigot which I measured at 378 gph.
I am planning to have three zones:
Zone 1 : Vegetable garden (consists of various rows of 12" spacing dripline, a total of 342' of dripline)
Zone 2 : Grapes (currently 2 grape plants which will be fed by 12" spacing dripline)
Zone 3 : Shrubs (viburnum,hydrangea,dogwood,plum yew, various flowers for a total of 207' dripline)
Could I set it up like this:
Hose spigot to backflow prevention, main valve, filter, pressure reducer then run about 15' to get to my garden. Once in my garden I have 3 valves, one for each zone. Or would I need a filter/backflow/pressure reducer for each zone?