FlowVis is a revolutionary, patented solution for accurate and reliable flow and velocity rate measurement in fresh water applications such as swimming pools, spas, fountains, water features, ponds, irrigation systems, ground water applications, well water and solar systems. As flow increases, the flapper moves forward toward its fully open position. The flapper’s angular position is directly related to the flow rate through the valve body/tee/pipe. A calibrated scale on the valve’s lid provides a highly accurate reading of the flow rate and velocity.
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