Preeflow Eco-Duo

The dosing principle of preeflow® dispenser is an endless piston dispenser. This special dosing geometry allows an endless and pulsation free dosing flow. The possibility of reversing the dosing flow (suckback) will prevent from dripping and leads to a perfect control of media stringing or dripping. Especially sensitive fluids with high viscosity and fillers inside experience a gentle treatment due to the low shear stress and the low pressure. Therefore, it is: many tasks – one principle !
Conformal coating Preeflow® one for all : Sealing – Bonding – Micro dot – Dam & fill – Underfill – Glob top

Benefits
The medium is unaltered by this process. And simply by switching to reverse-flow, preeflow® ensures a clean and controlled stop of material or medium. No drips, no mess – always!
Preeflow® products offer the ideal properties to ensure that all relevant 1 & 2 component applications in several industries are perfectly dosed !

The preeflow eco-DUO is a purely volumetric dispensing system for precise mixing and applicating minimum quantities of two-component fluids. With targeted controlling of the single components the mixing ratio can be adjusted up to the second place after the comma. Independent from viscosity fluctuations a clean and process reliable dosing can be realized. The controlled cutoff thanks to the suck-back effect marks the preeflow devices of the eco-DUO series next to many other features.

Precision mechanics coupled with the latest digital control – a combination designed to save your capital. Use it and you’ll soon find out.

Eco-DUO600 with a new safety feature: Through the newly integrated pressure sensor in the 2K mixing head in combination with the flowscreen pressure evaluation a safety shut down of the system is guaranteed at any time.

eco-DUO 330

Smallest dosing quantity: 0.005ml

Adjustable dosing flow: 0.1 bis 6.6 ml/min

Weight: approx. 1,100g

Description

The new eco-DUO330 precision-volume dosing unit made by ViscoTec doses smallest quantities which until now have not been achieved.

Theory of function

The preeflow® eco-DUO is a rotating, absolutely pressure-tight, positive displacement system with self-sealing rotor-stator arrangement. The controlled rotary motion of the rotor transfers the medium by displacement in the stator. The medium is unchanged by this process. And simply by switching to reverse-flow, preeflow® ensures a clean and controlled stop of materia or medium. No drips, no mess!

Data sheet
 
eco-DUO 450

Smallest dosing quantity : 0,010ml
Adjustable dosing flow : 0,2 bis 12 ml/min
Weight : 1.100g

Description

The new eco-DUO450 precision-volume dosing unit made by ViscoTec covers many applications within the low to medium-viscosity dispensing range.

Theory of function

The preeflow® eco-DUO is a rotating, absolutely pressure-tight, positive displacement system with self-sealing rotor-stator arrangement. The controlled rotary motion of the rotor transfers the medium by displacement in the stator. The medium is unchanged by this process. And simply by switching to reverse-flow, preeflow® ensures a clean and controlled stop of materia or medium. No drips, no mess !

Data sheet
 
eco-DUO 600

Smallest dosing quantity: 0,030ml
Adjustable dosing flow: 0,6 bis 32 ml/min
Weight: 1.600g

Description

The eco-DUO600 2components precision-volume dosing unit made by ViscoTec covers many applications within the low to medium-viscosity dispensing range.

Theory of function

The preeflow® eco-DUO is a rotating, absolutely pressure-tight, positive displacement system with self-sealing rotor-stator arrangement. The controlled rotary motion of the rotor transfers the medium by displacement in the stator. The medium is unchanged by this process. And simply by switching to reverse-flow, preeflow® ensures a clean and controlled stop of materia or medium. No drips, no mess!

Data sheet

 

Eco-CONTROL EC200-DUO

preeflow-dispenser2k-steuerung-ec200duoDescription

The innovative eco-CONTROL EC200-DUO, made by ViscoTec offers a wide range of applications for 2-K-precision-volume-dispensers.

Theory of function

The control unit eco-CONTROL EC200-DUO has been developed and tested for accurate work with the preeflow 2-K-precisionvolume-dispensers. The control unit has a variety of configuration options to 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 user guidance using a 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.

Data sheet

2K-Speed-Control plug’n’mix

preeflow-dispenser2k-steuerung-plugnmixDescription

The controller Speed-Control “plug’n’mix” from the brand preeflow was especially developed for 2-components applications.

Theory of function

Thanks to a standard terminal program can be programmed and configured the controller. In this case, the dispenser eco-DUO could be calibrated for different functions such as dosing speed or mixing ratio.
The volume speed, the dosing quantity and the suck back are be controlled the process by a 0 to 10 V signal. The integrated motor monitoring as overload protection for the dispenser can be processed as an error message.

Data sheet

  • Self-sealing at approx. 2 bar with water as medium – the self-sealing effect increases with the viscosity
  • Dosing pressures up to 40 bar are possible
  • Due to the self-sealing no pressure valves are necessary
  • A basic suction pressure can be applied (for high-viscosity media)
  • The pressure tank is not required with self-levelling fluids
  • Dosing accuracy ± 1 %
  • Repeat accuracy > 99 %
  • eco-DUO600: guaranteed safety shut down
  • Download PDF File
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