Elga specifies Burkert for new water purifier

Published: 1-Nov-2003


Burkert Fluid Control Systems has supplied high purity control valves for the latest Purelab Ultra water purification system manufactured by Elga LabWater. The Purelab Ultra uses an energy efficient process to remove impurities from tap water and deliver the ultra-pure (18.2MV/cm [purity = 99.999%]) water required for bioscience and analytical requirements.

Burkert sensors and solenoid valves are used to control all the automated sequences in the water purification system, including water flow and re circulation, auto rinsing procedures, sanitisation operations and isolation from the feedwater. They also control the dispensing of purified water into a wide range of containers.

Alan Mortimer, Elga's r&d director said that because ultra-pure water is a very aggressive solvent the selection of materials was very important: 'Our specification included valve bodies made from inert materials and dry armatures designed with minimum hide-out areas where bacteria can grow. As our water purification systems are required to be safe and operate at 24V, we also specified solenoid valves from Burkert's low-voltage range. To ensure the precision control of the flow rate and re-circulation, we needed a multi-valve manifolding system, which Burkert manufactured specifically for the Purelab Ultra.'

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