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.
Thanks to eccentric screw pump technology, liquids and pastes with up to 60% filler content can be metered with high precision. 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 and medium)
- 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/ref | 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 | * Depending on viscosity |