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preeflow® eco-PEN
Precision volumetric dosing pump
for highly accurate repeatable dispensing

  • Precision, process stable dosing
  • Gentle product dosing process
  • Linearly proportional control characteristics
  • Wide control and application range
  • Controlled reverse flow and clean product break
  • Easy system integration
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The preeflow eco-PEN is a precision volumetric, positive displacement, dosing/dispensing system that gives you accuracy and repeatability by means of a rotor which turns inside a stator. The preeflow eco-PEN doses and dispenses a wide range of material viscosities with no stress to the material, and absolute control.

We can integrate the preeflow eco-PEN into any robotic dispensing system.The preeflow eco-PEN delivers optimum results when used with Micron-S Precision Nozzles.

preeflow ecopen combined to a benchtop robot     preeflow eco-pen

Key Features Ideal for
  • Pulsation-free dispensing/dosing
  • Viscosity up to 7,000,000 mPas
  • Consistent results, independent of ambient temperature
  • Proportional dosing quantity and speed
  • Valveless technology
  • Extremely gentle on product
  • Dispensing and dosing of most difficult products (abrasive, shear-sensitive media with solids)
  • Adjustable reverse-flow prevents dripping and stringing
  • Up to 30% saving on material
  • Ability to select material weight or volume
  • Ability to dial in quantity and speed
  • Electronics packaging
  • Semiconductor
  • Medical
  • Biological chemistry
  • Laboratory
  • Photovoltaic
  • Optics and phototronics

The endless piston pump principle of preeflow dispensers

Very accurate volumetric dispensing with the preeflow eco-PEN 300
- 1 µl dispense with suckback

preeflow eco-PEN selector guide TOP
The new eco-PEN precision-volume dosing unit covers many applications from the lowest to the highest material viscosities, where the highest volumetric accuracy is required.

  • Dot-dosing
  • Bead application with dispensing rate adjustable to the run speed
  • Encapsulation
preeflow dispensing pens

Model Smallest dosing unit
Adjustable dosing unit
eco-PEN300 0.001 ml 0.12 - 1.48 ml/min 380g
eco-PEN450 0.004 ml 0.5 - 6.00 ml/min 410g
eco-PEN600 0.015 ml 1.4 - 16.00 ml/min 750g
eco-PEN700 0.060 ml 5.3 - 60.00 ml/min 750g
For two part formulations
0.010 ml 0.2 - 12.00 ml/min 1100g
For two part formulations
0.030 ml 0.6 - 32.00 ml/min 1600g

preeflow® eco-PEN700 is a rotating and perfectly pressure-tight displacement system

preeflow Control Systems TOP

The eco-CONTROL EC200 control system provides total control of the dispensing process. It is designed for either benchtop or rack mounted location, dependent on the model.

Operating principle
The unit is microprocessor-controlled. It is simple to operate, without submenu, and has graphic support. External signals can be connected via I/O ports to a PLC for control in automated lines. A wide variety of dosing programs with part management can be stored.

The supply pressure (with pressure sensor kit) is monitored and can be displayed digitally in bar or psi.

Error messages for filling level and motor current are also monitored (an RS232 interface is provided).

It is possible to control two eco-PEN precision-volume dosing units (as a factory-fit option).

  • Quantity program
  • Start/stop program
  • Time program
  • Teach IN function (external and navi)
  • Set-volume readout in g or ml
  • Dosing flow readout in ml/min and g/min
  • Storage of dosing programs with part management
  • Set pressure / actual pressure reading in bar/psi
preeflow dispensing system

Preeflow eco ec200-b built in control unit

preeflow is easy to clean
preeflow eco-PENs are very easy to clean and maintain.

Ordering information
Part number Description
VIS20505 preeflow eco-PEN 300
VIS20092 preeflow eco-PEN 450
VIS20048 preeflow eco-PEN 600
VIS20081 preeflow eco-DUO 450
VIS20048 preeflow eco-DUO 600
VIS20120 preeflow eco-CONTROL EC200-K desktop unit
VIS20121 preeflow eco-CONTROL EC200-B built in unit
VIS20143 preeflow eco-PEN stand
VIS20145 preeflow holder for eco-PEN 300/450

Other Information

Preeflow dispensing catalogue  View the preeflow brochure
preeflow white paper Our Technical Bulletins, White Papers & Articles page has a white paper to download about this technology:

The "Endless Piston" Pump - Technology for Precision Dispensing
by Peter Swanson

See also! See also!
  Dispensing needles and tips
 Best value liquid dispensing machine
 Manual dispensing syringes

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March 2016
Version 2.3

adhere - better bonding from intertronics
17 Station Field Industrial Estate, Banbury Road
t +44 1865 842842  e
Statements, technical information and recommendations contained herein are based on tests we believe to be reliable but they are not to be construed in any manner as warrantees expressed or implied. The user shall determine the suitability of the product for his intended use and the user assumes all risk and liability whatsoever in connection therewith.
© INTERTRONICS 1997, 2016