The brand preeflow stands for precise, purely volumetric dosing of liquids in small and smallest quantities. Based on more than 20 years of experience all around fluid dispensing “preeflow” was established in 2008 – and in addition also microdispensing in perfection. preeflow products are integrated in dispensing applications worldwide.
The unique quality – Made in Germany – turns them to essential components, for example in adhesive dispensing like 1-component or 2-component adhesives. If it comes to dispensers like the eco-PEN or eco-DUO, to control devices and evaluation units: preeflow products comply with our principle “small, precise, economical“.
Optics & photonics
Biochemistry
Photovoltaics
Medical Technology
LCD / LED
Laboratories
SMD / SMT
Semiconductors
Electronic components
and many more
preeflow® eco-PEN
A volumetric dosing system for precise dispensing that is able to apply minimum quantities of one-component fluids. Due to the ViscoTec endless piston principle watery up to pasty fluids can be feeded perfectly.
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-PEN series next to many other features.
- Valveless sealed technology without dripping
- Dosing pressures of 16 to 20 bar are possible
- Smaller needle and nozzle cross-sections
- Pressure tank maybe dropped, depending on material
- Smallest dosing quantity: 0.001ml
- Dosing accuracy ± 1 %
- Repeat accuracy > 99 %
eco-PEN300
Smallest dosing quantity: 0.001 ml
Adjustable dosing flow: 0.12 – 1.48 ml/min
Weight: 380 g
The and innovative precision-volume-dispenser eco-PEN700 made by ViscoTec offers a wide range of applications for low to medium-viscosity dispensing.
Theory of function
preeflow eco-PEN 3D is a rotating and perfectly pressuretight displacement system. Self-sealing rotor/stator design. Conveyance action by medium displacement in the stator through controlled rotor rotation. Safe conveyance without any modification of the medium. With its suck back option, preeflow ensures clean and controlled material or medium cut-off while preventing post-dripping effects.
eco-PEN330
Smallest dosing quantity: 0.002 ml
Adjustable dosing flow: 0.2 – 3.3 ml/min
Weight: 410 g
The micro dispenser eco-PEN330 is the missing link in micro dispensing!
Theory of function
Like all products in the eco-PEN series also the preeflow eco-PEN330 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 material or medium. No drips, no mess!
eco-PEN450
Smallest dosing quantity: 0.004 ml
Adjustable dosing flow: 0.50 – 6.00 ml/min
Weight: 410 g
The eco-PEN450 precision-volume dosing unit made by ViscoTec covers many applications within the low to medium-viscosity dispensing range.
Theory of function
The preeflow eco-PEN450 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 material or medium. No drips, no mess!
eco-PEN600
Smallest dosing quantity: 0.015 ml
Adjustable dosing flow: 1.40 – 16.0 ml/min
Weight: 750 g
The eco-PEN600 precision-volume dosing unit made by ViscoTec covers many applications within the low to medium-viscosity dispensing range.
Theory of function
The preeflow eco-PEN600 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 material or medium. No drips, no mess!
eco-PEN700 3D
Smallest dosing quantity: 0.060 ml
Adjustable dosing flow: 5.30 – 60.0 ml/min
Weight: 750 g
The and innovative precision-volume-dispenser eco-PEN700 made by ViscoTec offers a wide range of applications for low to medium-viscosity dispensing.
Theory of function
preeflow eco-PEN 3D is a rotating and perfectly pressuretight displacement system. Self-sealing rotor/stator design. Conveyance action by medium displacement in the stator through controlled rotor rotation. Safe conveyance without any modification of the medium. With its suck back option, preeflow ensures clean and controlled material or medium cut-off while preventing post-dripping effects.
Control units
eco-CONTROL EC200-K
The control unit, eco-CONTROL EC200-K, made by ViscoTec, offers the precision-volume dosing unit of the eco-PEN series many application possibilities.
eco-CONTROL EC200-B
The control unit, eco-CONTROL EC200-B, made by ViscoTec offers the precision-volume dosing unit of the ecoPEN series many application possibilities.
Speed Control Plug’n’Dose
The preeflow Speed Control ‘plug’n’dose’ TP control unit allows you to control the eco-PEN using a simple time/pressure control unit.
preeflow® eco-DUO
The first purely volumetric dispensing system for precise mixing and applicating minimum quantities of two-component fluids and pastes (for example adhesive dispensing). 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.
Due to the integrated pressure sensors in the 2-component dosing head, combined with a flowscreen pressure evaluation, a safety shut down is guaranteed at any time.
- Valveless sealed technology without dripping
- Dosing pressures up to 40 bar are possible
- The pressure tank is not required with self-levelling fluids
- Repeat accuracy > 99 %
- Self-sealing: No pressure valves are necessary
- Dosing accuracy ± 1 %
- Guaranteed safety shut down
eco-DUO330
Smallest dosing quantity: 0.005 ml
Adjustable dosing flow: 0.1 – 6.6 ml/min
Weight: ca. 1,100 g
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!
eco-DUO450
Smallest dosing quantity: 0.010 ml
Adjustable dosing flow: 0.2 to 1 ml/min
Weight: 1,100 g
The 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!
eco-DUO600
Smallest dosing quantity: 0.030 ml
Adjustable dosing flow: 0.6 to 32 ml/min
Weight: 1,600 g
The eco-DUO600 2-components 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!
Control units
eco-CONTROL EC200-DUO
The control unit, eco-CONTROL EC200-K, made by ViscoTec, offers the precision-volume dosing unit of the eco-PEN series many application possibilities.
2K-Speed-Control Plug'n'Mix
The control unit, eco-CONTROL EC200-B, made by ViscoTec offers the precision-volume dosing unit of the ecoPEN series many application possibilities.
preeflow® eco-SPRAY
The precision volume spray dispenser eco-SPRAY, made by ViscoTec, is suitable for various applications in different spraying areas.
The revolutionary combination of the reliable endless piston principle and a low-flow spray chamber guarantees perfect spraying of low to high viscosity fluids – with high edge definition!
- Viscosity independent spraying
- Spraying of defined quantity
- High edge definition
- Regardless of primary pressure
- Controllable round spray
- Consistent spray-image
- Constant amount/area
eco-SPRAY
Smallest dosing quantity: 0.05 ml
Adjustable dosing flow: 0.5 to 6.0 ml/min
Dimensions: Length 228 mm, ø 35 mm
The innovative precision volume dispenser eco-SPRAY made by ViscoTec offers a wide range of applications for low to high viscosity fluids.
Theory of function
The preeflow eco-SPRAY guarantees a volumetric spray application based on the endless piston principle. The base of this new microspraying technology is still our proven rotor/stator technology. Due to a defined rotary motion of the rotor the medium in the stator is volumetrically replaced and conveyance is created. Thus a determined amount of medium is process controlled and directed to the special low flow spray chamber.
The precise nebulization and spraying can take place continuously or punctually. The revolutionary combination of the endless piston principle and the low flow spraying chamber guarantees perfect spraying of low to highly viscous media with high edge definition and lowest possible overspray.
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