The Proseries-M® MD-3 Hybrid Diaphragm Chemical Metering Pump is carefully engineered to provide precision chemical metering for treatment of municipal water and wastewater. MD-3 is NSF 61, CE, ETL and NEMA 4X certified. It has 2000:1 turndown, provides smooth chemical dosing with no pulsation dampener. With 380 strokes per minute, it provides steady flow. Output rates to 58 GPH (220 LPH), pressures to 145 psi. Equipped with conveniently built-in controls. PVDF wetted end fittings allow for over 14 inlet and outlet configurations. All-inclusive ordering means units are sold complete with necessary components for drop-in-place installation. Five-year warranty.