Motor-driven Diaphragm Dosing Pumps
The MEMDOS series is an economical line of motor driven, mechanical diaphragm metering pumps. This versatile line offers two versions to meet a variety of applications:
  • The base model, MEMDOS E, is a manually operated version.
  • For applications requiring control by an external control signal, the intelligent MEMDOS DX offers state-of-the-art microprocessor control. By integrating the speed control, the MEMDOS DX eliminates the need for the further expense of additional variable speed controllers
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​MEMDOS E
Classic motor-driven diaphram dosing pump. The MEMDOS E combines the properties of the MEMDOS series working reliably for many years with the latest requirements in dosing technology. Two models of the MEMDOS are available. The smaller version can be used for capacities from 0...4 to 0...160 l/h and the larger version for capacities from 0...160 to 0...380 l/h. Pressures are admissible between 4 and 10 bar, depending on the size.
Features
  • Suitable for accurate mixing tasks
  • Capacity range from 1.2 to 92 gph, max. back pressure 150 psig
  • Linear development of the dosing quantity
  • According to the stroke length
  • Tappet drive with manual and automatic capacity adjustment
  • Wide range of dosing head materials
  • Double-diaphragm system optional
  • Small stand, requires little space
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​MEMDOS DX
Electronic motor-driven diaphragm dosing pump
The microprocessor-based MEMDOS DX combines the properties of the MEMDOS series with the latest requirements in dosing technology. Two models are available. The smaller version can be used for capacities from 0...4 to 0...160 l/h and the larger version from 0...380 l/h. Pressures are admissible between                                                     4 and 10 bar. The MEMDOS DX is used if the                                                     pump is to be integrated in controls or                                                                 automatic  control systems. It allows the                                                               adaption to a large number of different control                                                     signals and system monitoring equipment.
Features
  • Suitable for accurate mixing tasks
  • Capacity range from 1.2 to 92 gph, max. back pressure 150 psig
  • Minor dependence of the back pressure
  • Linear development of the dosing quantity
  • According to the stroke length
  • Wide range of dosing head materials
  • Double-diaphragm system optional
  • Small stand, requires little space
  • Network connection optional
  • Batch dosing optional
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MEMDOS LB
Riding on the crest of the waves
The MEMDOS LB is used when the integration of the pump into controls or control circuits is required. Thanks to the sturdy tappet drive with manual or automatic capacity adjustment, the conveyed media such as acids, lyes, coagulants and flocculants are dosed reliably and precisely. To adapt the dosing capacity, either the stroke length can be adjusted mechanically or the speed of the three-phase                                                       motor can be regulated by means of a                                                                 separate frequency converter. On request, the                                                     MEMDOS LB pumps can also be supplied                                                           with a double-diaphragm system.
Features
  • Capacity range 1.06 – 324 gph, up to 232 psig
  • Power supply 115 V, 230 V or 400 V
  • Material finishes PVC, PP, PVDF and stainless steel
  • Infinitely variable stroke length from 0 – 100 %
  • A variety of three-phase and alternating current motors
  • ATEX versions are available for Zones 1 and 2
  • Also suitable for frequency converter operation
  • Double-diaphragm system (optional)
  • Automatic stroke length adjustment (optional)
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MEMDOS LA
Riding on the crest of the waves
The MEMDOS LA is equipped with a diverse range of inputs and outputs and can thus be deployed for complex dosing tasks. It can be controlled via a 0/4 – 20 mA current input and an external release input. At the same time, it indicates its current operating state via a fault output (alarm relay) and an optocoupler output (stroke feedback). The pump is fitted with a 0 – 20 mA analogue output. 
The MEMDOS LA is compatible with all conventional control systems.
                                                    The pump is also fitted with a level input, can                                                      evaluate suction lines directly using a low                                                            level alarm and its large functional scope                                                           means that it can be deployed in a number of                                                     areas.
Features
  • Capacity range up to 270 gph, up to 232 psig
  • Power supply 115 / 230 V, ± 5 %, 50/60 Hz
  • Material finishes PVC, PP, PVDF and stainless steel
  • Stroke frequency manually settable via a potentiometer
  • Release input for external start/stop
  • Analogue input 0/4 – 20 mA
  • Level input with a switching point
  • Analogue output 0 – 20 mA
  • Alarm relay output
  • Stroke feedback output
  • Double-diaphragm system (optional)
  • CSA and UL certified
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MEMDOS LP
Riding on the crest of the waves
The MEMDOS LP is used when the integration of the pump into controls or control circuits is required. For integration into demanding automation networks, a version with an Ethernet-based MODBUS interface is available. Thanks to the sturdy tappet drive with manual or automatic capacity adjustment, the conveyed media such as acids, lyes, coagulants and flocculants are dosed reliably and precisely. On request, the MEMDOS LP                                                       pumps can also be supplied with a double-                                                        diaphragm system.
Features
  • Capacity range from 1.1 to 270 gph, max. back pressure 232 psig
  • Power supply 230 V, ± 5 %, 50/60 Hz
  • Material finishes PVC, PP, PVDF and stainless steel
  • Stroke frequency can be precisely adjusted via the keyboard
  • Precise pump adjustment via the keyboard
  • Graphic display with multi-language menu
  • Analogue input 0/4 – 20 mA
  • Pulse input (increase and reduction)
  • Level input with early warning and main alarm
  • Release input for external start/stop
  • Supply amount displayed in various units
  • Maximum delivery rate can be limited
  • Stroke feedback output
  • Batch dosing with interval and timer functions
  • Dosing control input
  • Alarm relay output
  • Analogue output 0/4 – 20 mA
  • Diaphragm rupture detection and reporting (optional)
  • Double-diaphragm system (optional)
  • Ethernet interface (optional)
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MEMDOS MR / 2300
 
Powerful motor-driven diaphragm dosing pump 
Diaphragm dosing pumps of the MEMDOS MR / 2300 series have been developed for a broad range of applications. Thus they are used in the industrial sector, in process engineering and very frequently in water and waste water treatment. They are leakproof. Standard versions are with the head located on the left-hand side. dosing pumps with the head on the right-hand side                                                         can be supplied. Duplex dosing pumps are                                                         available with the head combinations                                                                   shown in the following tables. The heads                                                             are arranged in diagonals.  
Features
  • Capacity range from 17 to 310 gph (single head)
  • max. back pressure 150 psig
  • PP and stainless steel dosing heads
  • Double-ball valves (up to MR 290)
  • Spring-loaded flat-seat valves (starts with MR 400)
  • Spring-loaded single-ball valves (optional)
  • Separation chamber between dosing head and gearbox, with drainage pipe
  • Stroke adjustment either manually or electrically (ATE)
  • Dublex head pumps (optional)
  • Stroke counter with inductive detector for charge-processes (optional)
  • Frequency converter controlling (optional)
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MEMDOS GMR
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.
Features
  • 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)