The automated valves 1, 2 and 3 provide single button control of the water features from the control panel inside your house. For example, if I wanted to turn on just the bubblers, I could push the "Bubblers" button and valves 1, 2 and 3 would automatically move to divert flow to just the Bubblers. In this example the valve configuration would be set as indicated by the yellow "T" on the picture. The handles on valves 1 and 2 would move to shut off flow to the Laminars and the Waterfall while leaving the path to the Bubblers open. Note that valve 1 is positioned at an angle, which allows water to flow both left to the Bubblers and right.