None of the valves I already purchased have flow control. So you're saying that the 'master' valve I get for this needs to have flow control? Do I need to send the other valves back and get ones that have flow control? I guess I don't really understand how flow control works....I thought it was kind of like pressure regulation.
Flow control and pressure regulators both work on the same principle: create an adjustable restriction in the water flow to reduce the water pressure. In the case of the regulator, there are springs and things that continuously widen and narrow the restriction to keep the water on the output side at a constant pressure. Flow control, on the other hand, is a fixed restriction (you manually adjust the restriction by turning a screw). So as the incomming pressure changes so will the output pressure.