Big motor-driven diaphragm dosing pump

Double diaphragm dosing pumps of the MEMDOS GMR series can be supplied as single or duplex dosing pumps. The pumps are used to meter large quantities at relatively low back pressures. They are frequently used in waste-water treatment to meter pH-regulating chemicals or flocculents.



  • Double diaphragm dosing pump
  • Single or duplex dosing head pump
  • Capacity range from 82 to 1057 gph (single dosing head)
  • Medium side of EPDM separating diaphragm coated with PTFE
  • Single-ball valves
  • Drive: AC or DC motor
  • Stroke counter with inductive detector for charge-processes (optional)
  • Frequency converter controlling (optional)

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MEMDOS GMR 200030004000
Max. pressurepsig 432
Pump capacityml/stroke 460690920
Driven by continuous control:
Delivery capacitygph 82 ... 528122 ... 793164 ... 1057
Stroke frequencymin-1 11...72
Driven with 2850 min-1:
Delivery capacitygph 423634845
Stroke frequencymin-1 58
Drive powerkW 2.2
Diameter of diaphragmin 8.3469.921
Stroke lengthmm 232632
Suction liftft H2O 4
Max. ambient temperature°F 104°
Weight Plastic dosing headlb 320364
Weight Stainless Steel dosing headlb 342430

Subject to technical changes


BW: Operation instruction
MB: Dimension sheet


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Lutz-JESCO America Corp.
55 Bermar Park
Rochester, NY 14624
Toll-Free: +1-800-554-2762
Fax: +1-585-426-4025


Outside the U.S.
Tel.: +1-585-426-0990