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Precision that inspires

The compact stepper-motor pump, coupled with its intelligent drive concept, combines the big advantages of a solenoid-driven diaphragm dosing pump with the precision of a motor-driven diaphragm dosing pump.
The MEMDOS SMART LD series is available in five capacity ranges.
The MEMDOS SMART LD's drive is fully adjustable. Using position detection in the pump, after an unexpected shut down of the pump, overdosing can be prevented and downtime resulting from this can be excluded.



  • Output range from 2.4 – 30.7 l/h, up to 20 bar
  • Power supply unit 110 – 240 V, 50/60 Hz, IP65, 25 W
  • Microprocessor controlled drive
  • Integrated dosing head venting facility (only MEMDOS SMART LD 2, LD 5 and LD 10 with dosing head made of plastic)
  • Suitable for wall and floor mounting
  • Material finishes PVC, PP, PVDF and stainless steel
  • Stroke frequency can be precisely adjusted via the keyboard
  • Graphic display
  • Pulse input (increase and reduction)
  • Level input with early warning and main alarm
  • Release input for external start/stop
  • Calculation wizard for pulse operation available online
  • CSA and UL certified

Further product views

MEMDOS SMART LD 2510152030
Delivery capacity at max. back pressurel/h
ml/stroke 0.220.571.191.522.273.41
Max. delivery pressurebar 20 (16*)1610653
Delivery capacity at average back pressurel/h 2.65.711.314.421.231
ml/stroke 0.280.631.261.602.363.44
Average delivery pressurebar 108532.51.5
Nominal stroke frequencyRPM 150
Suction lift for non-gassing mediamWS 3
Max. supply pressurembar 800
Diameter of diaphragmmm 333954
Valve size DN3**/DN4DN4
Voltage supply 110 – 240 V, -10 % / +5 %, 50/60 Hz
Power consumptionW 25
Protection class IP65 (with covering caps on the connections)
Insulation class F
Material PVC, PP, PVDF, 1.4571
WeightPVC, PP, PVDFkg ~2,2
Stainless steel (1.4571) ~3,3
Permitted ambient temperature°C 5 – 45 (with PVC parts 5 – 40)
Permitted media temperature°C 80 (with PVC parts 35; with PP parts 60)

* PVC version
** DN3 only for double ball valves
Subject to technical changes