New high-lift DWU pump from Weir Minerals
Latest Warman pump delivers enhanced performance for high-head dewatering applications
WEIR Minerals have the launched the latest addition to their range of Warman centrifugal pumps – the DWU dewatering pump. Specially developed for the European market, the new pump is designed to deliver increased efficiency where water needs to be lifted over greater heights, providing efficient operation at heads of up to 140m.
Four different sizes are available, with outlet diameters of 75mm, 125mm, 150mm and 200mm, while around 50% of the parts used in the new design are interchangeable with Weir Minerals’ popular Warman WBH slurry pump, to help customers simplify spare parts ordering and holding.
The DWU dewatering pump – which has been developed through computational fluid dynamics (CFD) – also features a new double-volute casing that reduces radial hydraulic loads and maintains internal pressures of up to 7,000kPA, allowing it to be configured in series to deliver even greater heights.
Other key features of the unit include: a thrust-reduction impeller design to minimize axial thrust loads; and external cooling fans to keep bearings cool. An impeller-release collar is available on the larger models.
Steve Sedgwick, Europe product manager for mine dewatering at Weir Minerals, said: ‘The dewatering system is a crucial part of almost every mining operation around the globe, and we’re committed to ensuring that our range of dewatering pumps is broad enough to deliver optimum efficiency, whatever the requirements.
‘We have used the latest computer-modelling technology to achieve a hydraulic design that is optimized for the high-head, high-efficiency dewatering challenges most commonly encountered by our customers while maintaining a proper, robust mining-type pump.
‘The DWU is designed specifically with heavy lifting in mind, so that it minimizes hydraulic loads on the internal parts, maximizing efficiency and increasing the longevity of wear parts. Mechanically, the pump has been designed with heavy-duty mining applications in mind. A one-piece frame ensures it stays correctly aligned, while ultra-heavy-duty bearings maximize wear life and reduce the whole-life cost of ownership.’
