The high-precision ZPDA dosing pumps are specifically designed for start stop dosing. The low pulsation gear design provides a constant flow with very rapid pressure build-up. Internal clearances based on fluid viscosities are held within a few microns to insure the highest efficiency possible, even at high differential pressures up to 200 bar. Depending on the application, DLC coatings are available for the wetted parts to provide additional corrosive resistance and abrasive particle resistance as well. Direct mounting of a VSE flow meter on the rear plate is also available for closed loop control.