Liquid Feeders

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Coperion K-Tron

A versatile concept for the accurate feeding of liquids and pastes

Coperion K-Tron’s liquid loss-in-weight feeders provide accurate continuous volumetric or gravimetric flow control of liquids. The highly accurate gravimetric units combine the pump and tank with a suspension scale or platform scale; the feed pump for metering the material is located outside the scale area.

When feeding liquids, the special requirements of each application vary. A wide range of pumps and tanks can be combined to constitute a Liquid Feeder and satisfy the specific demands. The feed pump is selected according to the material and the required feeding capacity.

Benefits & Features

  • Versatile, modular liquid feeding concept through combination of a wide range of different pumps and tanks
  • Highly accurate feeding of liquids and pastes, especially with gravimetric units
  • Three scale sizes & types available, in relation to tank size
  • Outstanding 2 Sigma accuracy
  • Reliable feeding of temperature-sensitive material
  • Direct cost savings compared to other systems on the market

Related Industries

  • Plastics
  • Chemicals
  • Food & Pet Food
  • Pharmaceutical

Areas of Application

Owing to the wide range of available pumps and tanks, Liquid Feeders can cover a broad span of applications. They are suitable for different industries and many thousands of installed units prove their reliability in daily use feeding pastes or liquids to the production process. Acids, plasticizers, molasses or flavors are typical bulk materials fed by this type of feeder. Other applications are, for example, feeding meat slurry to the extruder in food or pet food processing or adding liquid additives in a polyethylene production line.

For highly accurate feeding of high value liquids and pastes, as for example flavors and aromatics in the food industry, gravimetric models implementing a suspension scale or platform scale are ideal. Heated units can be provided where material viscosity is an issue or for feeding temperature-sensitive materials. Depending on the needs of the application, additional downstream equipment such as mixers can be supplied as well.

Design Features

Liquid Feeder principle of operation

When feeding liquids the special requirements of each application vary. Although based on a modular design, our Liquid Feeders are therefore always custom designed. Please contact us for more details.

Feed rates are dependent upon the configuration.

The pump is located outside of the weighing area. A flexible connection line is required between tank and pump.

2 SIGMA Liquid Feeder sample test results

The 2 SIGMA sample test using a liquid phosphite antioxidant underlines the outstanding accuracy of Coperion K-Tron's liquid feeder concept.

Feed rate: 0-50 kg/h
Temperature: 50°C
Pressure: 10 bar
Viscosity: approx. 1000 mPa s
Duration: 60s sample

Available Models

LLW feeders are available in a wide range of configurations

Coperion K-Tron liquid loss-in-weight feeders are available in modular configurations, making it easy to configure the right feeder for your application.  All components are mounted and wired on a skid at the factory, making installation on site quick and easy.  A choice of two platform scales or a three-point weighing system are available, depending on the size of the system.

Product contact parts are manufactured of stainless steel.

Hazardous location options (ATEX, NEC) available.

Consult Product Specification Sheet for more details.

Download Product Specification Sheets

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