i do use pressure reg heads sometimes. am i being overdesigned here? cuz you can do so much with piping, but the first zone or two have higher pressures than the ones farther away. I wanted to regulate at the valve, dif from the prv at the tap. i was trying to find a cheaper way to do it than accusync. I regulate the pressure dif on dif installs according to the length of pipe, friction losses, you get the idea.
I guess i am just best off with an accusync here and there.