Retrofit FlowVis Flow Meter FVJ-R-LThe FlowVis is a revolutionary, affordable, and highly accurate Flow Meter. The best part is that the FlowVis is more than a Flow Meter; it is also a fully functioning Check Valve. Simply attach the Retro-Fit FlowVis to your existing Jandy Check Valve and as flow increases and decreases, the check valves flapper swings within its range of motion and indicates your flow rate. A specifically designed calibration spring, indicating arm, and an extended height valve body lid constitute the fundamentals of the FlowVis design concept.The FlowVis is a revolution in reliable flow measurement. It is the most advanced, affordable, and reliable precision Flow Meter designed specifically for pools, spas, fountains, and water features.FlowVis is built to last. It's robust, yet unobtrusive design means that unlike competing Flow Meters, FlowVis won't get kicked, tripped over, or broken. Unlike Pitot tube / Rotameter style devices, FlowVis will not stick, bounce, or provide inaccurate readings of flow. There are no saddle clamps to corrode, flat rubber seals to deteriorate, or small holes to become blocked.A factor that plagues the installation of flow meters is the manufacturers stated need to have a significant length of straight pipe available. Most often this is 15 x the pipe diameter. So, for a 2.5 inch diameter pipe, this would require 37.5 inch of straight pipe; anything less will induce even greater inaccuracy. FlowVis has no such restrictions; you can inThe FlowVis has undergone exhaustive testing and calibration to ensure long life, accuracy, and repeat-ability. No other Flow Meter at this price point is NSF certified or comes remotely close to its +/- 2 LPM accuracy. Note: Accuracy: of +/- 2 LPM from 40 to 400 LPM verified by NSF testing.
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