Novel heat-dissipation technology

Paul Boughton

The Wilden Typhoon plastic mag-drive pumps benefit from additional fluid flow path that cools the impeller bushing to prevent premature wear

Designed to handle a wide variety of chemicals and low-pH process fluids, the Wilden Typhoon plastic mag-drive pumps from Axflow are available from 0.75kW (1HP) through to 3.75kW (5HP).

Most importantly, they do this without the mechanical seals used in typical centrifugal pumps, thereby reducing the risk of leakage.

The Typhoon pump comes as standard with the latest heat-dissipation technology in the form of a patented fluid flow path around the bushing. This additional path allows the process fluid to cool the bushing of the impeller from the outside, while continuing to offer the internal spiral cooling channel offered on most magnetic-drive centrifugal pumps. Pump designers report that this innovative feature prevents the heat build-up that frequently damages or completely disables the shaft bushing.

Other notable features include a patented buffer system that absorbs vibrations and shock that can result from adverse operating conditions. At the same time, this buffer is self-adjusting to provide dampened face-to-face contact between the thrust ring and the wear ring, thereby minimising wear and prolonging service life. Furthermore, dry running conditions can be tolerated due to the inclusion of the heat dissipation capability.

Offering flow rates up to an impressive 800 litres/min, the Typhoon Mag-Drive is a compact unit that can help to increase productivity, reduce operating costs and give the leak-free performance that so many chemical duties demand. Applications where the typhoon has proved more effective than alternative designs - even when questions about the suitability of mag-drive pumps have been raised - include transferring copper acid, caustic soda, water with trace sulphuric acid and liquid ammonia.

According to Axflow, the five-model range gives current and potential users of mag-drive pumps a highly reliable, efficient and low-maintenance means to handle some of the more difficult liquids encountered.

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