Progressive cavity pumps

Continuous metering of abrasive materials

The progressive cavity pump is a high-precision volumetric metering system that operates continuously and pulsation-free. The rotational motion of the eccentric screw ensures highly precise, constant metering, particularly in the case of small output rates from 0.1 ml/min. The special rotorstator combination prevents excessive wear when processing abrasive materials. This guarantees a long service life and high cost-efficiency.

Progressive cavity pump technology is used to meter liquids and pastes with up to 60% filler content with high precision, enabling external integration of the metering pump independently of pressure regulators. The metering quantity can be adjusted completely linearly. This enables a metering precision of ± 1% and better.

Product properties

  • Variable discharge rate from 0.002 ml
  • Output rate of 0.1 to 4,400 ml/min
  • Speed of 1 to 150/400 rpm (depending on model)
  • Maximum input pressure of 6 to 8 bar
  • Maximum differential pressure of 10 to 20 bar
  • Ideally suitable for all viscosities from highly fluid to pasty 

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Technical Specifications

Size Flow volume ml/U Input pressure bar Operating
pressure* bar
Speed range min.
min ⁻¹
min. / max.
1 0,01 / 0,05 / 0,15 / 0,30 max. 6 max. 10 1 / 150
2 0,30 / 1,00 / 2,00 max. 8 max. 20 1 / 400
3 4,00 max. 8 max. 20 1 / 400
      * Depending on
viscosity
 

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