Pump Curves, VFDs and Pressure Reducing Valves

Understanding pump curves is critical to any submersible applications, whether it is controlled by a standard pressure switch, a variable frequency drive (VFD), or a pressure-reducing valve (PRV). In addition to helping you product the right amount of water, avoid conditions that may be harmful to the pump (e.g. upthroust), and maximize efficiency, understand pump curves can help you actually visualize and understand the differences between standard systems and VFD systems, and PRV systems. This issue of Franklin AID will walk you through the steps you need to do that. Continue reading