All subsidiaries of

Rowametric - Optimized Dosing

We are happy to advise you personally for selecting the right ROWAMETRIC Dosing System!

Rowametric Dosing Systems

Peristaltic Pumps

The peristaltic or hose pumps respectively as standard device for liquid color dosing.

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Progressive Cavity Pumps

For high-precision und pulsation free dosing from 0.1 g/min.

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Gear Pumps

The linear conveying gear pumps for continuous applications.

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Comparison of the ROWAMETRIC Systems

  Peristaltic Pump Progressive Cavity Pump Gear Pump
Dosing Principle volumetric or gravimetric volumetric or gravimetric volumetric
Application injection molding/extrusion injection molding/extrusion extrusion
Dosing Position above main hopper above main hopper above main hopper or in polymer melt
Dosing Range from 1 g/min from 0.1 g/min from 1.5 g/min
Color Change switch hose switch or purge pump head purge pump head
Key Benefit fast color changes pulsation free also at low dosages color injection downstream with up to 300 bar
Field of Use frequent color changes, high color diversity, small batches few color changes, limited color diversity continuous processes, few color changes
Dosing Principle
Peristaltic Pumpvolumetric or gravimetric
Progressive Cavity Pumpvolumetric or gravimetric
Gear Pumpvolumetric
Application
Peristaltic Pumpinjection molding/extrusion
Progressive Cavity Pumpinjection molding/extrusion
Gear Pumpextrusion
Dosing Position
Peristaltic Pumpabove main hopper
Progressive Cavity Pumpabove main hopper
Gear Pumpabove main hopper or in polymer melt
Dosing Range
Peristaltic Pumpfrom 1 g/min
Progressive Cavity Pumpfrom 0.1 g/min
Gear Pumpfrom 1.5 g/min
Color Change
Peristaltic Pumpswitch hose
Progressive Cavity Pumpswitch or purge pump head
Gear Pumppurge pump head
Key Benefit
Peristaltic Pumpfast color changes
Progressive Cavity Pumppulsation free also at low dosages
Gear Pumpcolor injection downstream with up to 300 bar
Field of Use
Peristaltic Pumpfrequent color changes, high color diversity, small batches
Progressive Cavity Pumpfew color changes, limited color diversity
Gear Pumpcontinuous processes, few color changes

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