50 55 60 65 70 75 750 1000 1250 1500 1750 2000 2250 [rpm] [dBA] dual flank gear pump, 200 bar pressure. internal gear pump, ELIKA pump. Noise comparison between standard external gear pump, vane pump, Dual Flank Gear Pump Standard Gear Pump Vane Pump Internal Gear Pump ® ELIKA First pump by Marzocchi in 1961 ® First ELIKA by Marzocchi in 2011 ® Low Noise, Low Pulsation Gear Pump Elika Helical Gear Pumps #DriveLineHarmony https://www.jbj.co.uk/elika_gearpumps.html 40
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