eco-DUO high precision volumetric dosing unit and controller
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preeflow® eco-DUO High Precision Volumetric Mixing and Dispensing System

The preeflow eco-DUO high precision volumetric dosing unit doses, mixes and dispenses a wide range of materials for two-component dispensing with absolute control. The preeflow eco-DUO 450 and eco-DUO 600 are two-component precision volumetric, positive displacement, dosing/mixing/dispensing systems that give you accuracy and repeatability.

The preeflow eco-DUO uses the precision dispensing technology of the preeflow eco-PEN; by integrating two eco-PENS through a manifold and a static mixing nozzle, the eco-DUO provides extremely precise metering, mixing and dispensing of critical two-part materials like epoxies and silicones.

We can integrate the preeflow eco-DUO 450 and eco-DUO 600 into any robotic dispensing system.



  1. Genuine volumetric meter, mix and dispense dosing
  2. Viscosity independent
  3. Suck back effect
  4. Easy to clean
  5. Controllable dosing flow
  1. Electronics packaging
  2. SMD/SMT
  3. Semiconductor
  5. Medical
  6. Biological chemistry
  7. Laboratory
  8. Photovoltaic
  9. Optics and photonics
Model Accuracy of dosing Repeat accuracy Mixture ratio Min. dosing quantity Volume flow
eco-DUO 450 ± 1% > 99% 1:1 to 10:1 0.01 millilitres 0.2 to 12 millilitres per minute
eco-DUO 600 ± 1% > 99% 1:1 to 10:1 0.03 millilitres 0.6 to 32 millilitres per minute
preeflow ecoDUO450 datasheet Download the preeflow ecoDUO450 datasheet
preeflow ecoDUO600 datasheet Download the preeflow ecoDUO600 datasheet

EC200 DUO controller
The eco-CONTROL EC200-DUO offers a wide range of applications for the eco-DUO450 and eco-DUO600.

Operating Principle
The eco-CONTROL EC 200-DUO control unit has been developed and tested for accurate work with the eco-DUO 2K precision volume dispenser. The control unit has a variety of configuration options such as dosing, dispensing time and mixing ratio. All production-related values can be stored and changed at any time. The operation takes place over an intuitive graphical user interface. An integrated pressure control ensures the optimum process safety of the system. There is also the possibility of data exchange with a USB interface.


  1. Quantity program
  2. Start / stop program
  3. Time program
  4. Mixing ratio up to 10:1
  5. Adjustable mixer sizes
  6. Adjustable individual pot life
  7. Flush out or empty shot
  8. Manual / automatic calibration
  9. Desired-volume display in grams or millilitres
  10. Dosage flow rate display in millilitres per minute or grams per minute
  11. Storage of PDM-supported dosing programs
  12. Desired-pressure and actual-pressure display in Bar or Psi
  13. Digital clock
preeflow ecoDUO controller datasheet Download the preeflow eco-CONTROL EC200-DUO datasheet
Part number Description
VIS20081 preeflow eco-DUO 450
VIS20048 preeflow eco-DUO 600
VIS20641 preeflow eco-CONTROL EC200 DUO dispense controller
preeflow catalogue Download the preeflow Product Brochure


See also our Technical Articles and White papers page to download “The “Endless Piston Pump – Technology for Precision Dispensing” – a whitepaper about this technology.


Contact Details

17 Station Field Industrial Estate,
Banbury Road, Kidlington
Oxfordshire, England

t 01865 842842

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August 2016 - Version 5.0