A flow control center can include a barometric sensor, at least one ball valve assembly, and a computing device. The ball valve can be controllable among a plurality of discreet positions to selectively change a flow of fluid. The computing device can have a communication device configured to receive signals from the barometric sensor. The computing device can determine a first flow rate in response to the sensed pressure represented by the first signal. The computing device can also control a motor of the ball valve assembly to move a ball valve to a first of the plurality of discreet angular positions. The first of the plurality of discreet angular positions can correspond to the sensed pressure represented by the first signal.
