DG Flow - Presflo Electric Pump ControllerINSTALLATION & USEThe PRESFLO pressure-sensing pump controller automatically starts and stops the pump,It is a substitute for traditional pressure switch/surge tank systems while offering important advantagesKEY FEATURES- Water Accumulator - Built-in- Non-Return Valve - Built-in- 3 Piece Union - Integrated- IP65 - Enclosure- Resin-protected PCB- Free Positioning - Vertical, Horizontal, or any angle- Excessively Frequent Starts - Protection with auto reset- Dry Run - Protection with auto reset3 Piece Union - integrated - Avoiding the need for expensive 3-piece unionsNon-Return Valve - built-in and with easy inspection - Avoid the need to install onePressure Gauge - easy-to-add - Optional: it can be added anytimePump Matching Essential CheckCarefully check the electric and hydraulic features and make sure they comply with those of the pump and the system, but in particular:Presflo 1.5 bars start pressure requires:- pump head of at least 2.5 bars