New in-line pumps for building services applications

At the ISH trade fair, to be held in Frankfurt in March, KSB will be launching a new series of fully integrated in-line water pumps. The EtaLine Pro series has been developed to offer extremely low energy consumption and the economical use of materials for intelligent and highly efficient performance.

By using a hydraulic system designed for high speeds, KSB’s designers were able to achieve a compact design. Thanks to a significant increase in output per size, the new pumps require up to 48% less aluminium, 49% less grey cast iron, 68% less magnetic steel sheet and 73% less copper, compared to conventional units.

The classic ferrite magnets used in the motors do not contain any rare earth metals, which are a cause of significant environmental damage during their extraction. Motor rating ranges from 0.8 to 2.6kW. With their wide voltage range of 380 to 480V at 50 or 60Hz, the pump sets can be used worldwide. International product certifications such as CE, UKCA and UR/UL are contributing factors to their suitability for worldwide acceptance.

Suitable for applications including heat transfer, cold water transfer (acclimatisation) and many types of water transportation, the new units offer a high degree of planning reliability, as they have several pump functions. Examples include dynamic control, sensorless control and multiple pump operation, as well as heat quantity measurement.

These intelligent functions allow adjustments to be made to the operation or operating points, even after the pumps have been installed. The pumps adjust their flow rate and head based on an algorithm, moving the operating point along a programmed control curve. Thanks to various digital interfaces, integration into modern building management systems is possible without any problems.

With just five hydraulic system sizes, the quiet running close-coupled pumps cover a broad selection range. Their maximum flow rate is 63.6 cubic metres per hour, with the maximum discharge head possible being 42.9m. The pumps and the mechanical seals are designed for operating pressures of up to 16 bar.
As standard, the pumps are fitted with mechanical seals selected for a maximum operating temperature of 120°C, depending on the application, and the fluid handled. A cathodic e-coating of the cast pump casings provides all the necessary corrosion protection. When designing the new series, KSB paid particular attention to ensuring that pump servicing is very easy. Standardised mechanical seals and a reduced variety of components, combined with an extensive global service network, ensure the rapid availability of spare parts when needed.