HD

HD Series – Screw Centrifugal Pump

The HD Series is a screw centrifugal pump designed for demanding wastewater and industrial applications where conventional centrifugal pumps reach their limits.

Available for submersible and dry installation, the HD pump combines the advantages of centrifugal and positive displacement principles, making it ideal for handling liquids containing solids, fibers and high viscosities.

Typical Applications

• Sewage and wastewater treatment

• Activated sludge and biological processes

• Industrial waste liquids

• Pulp and paper industry (long fibers)

• Food products and biological media

• Abrasive and fibrous materials

Why Screw Centrifugal Technology

The screw-shaped impeller creates an inducer and displacement effect that allows the pump to operate efficiently where standard centrifugal pumps struggle.

Key advantages include:

• Excellent non-clogging performance

• High suction capability and low NPSH requirement

• Low shear force – gentle handling of biological media

• Reliable handling of viscous liquids

• Stable and steep pump curve

• Long service life and stable operation

Product Features

• Non-blocking hydraulic design with large flow channels

• Oil-cooled motor design for reduced motor temperature

• Compact, integrated construction

• Low noise and stable operation

• Double mechanical seal in oil bath

• High-quality bearings (SKF, FAG or NSK)

Operating Range

• Capacity: up to approx. 5,000 m³/h

• Head: up to approx. 100 m

• Solids content: up to 18%

• Liquid temperature: –10 °C to +80 °C

(Wider operating ranges available on request.)

Installation Options

• Submersible installation

• Dry-installed version available

For further information, please contact Kaiszer Pump Kft.