impeller.net The Online Pump Magazine

19.08.2011

Leak-free, Plastic Mag-drive Pump Range Expanded

Michael Smith Engineers

A new pump model DB5.5 has been added to the established range of Finish Thompson DB Series of Plastic Magnetic-Drive Sealless Centrifugal pumps.

This new model DB pump covers flow rates up to 5m3/hr and differential heads to 6.5 metres and is designed and built to provide the important benefits of sealless, magnetic-drive pumping, such as optimum efficiency and reliability, even in the most corrosive and challenging environments.

Available from pumping specialists Michael Smit Engineers, DB5.5 pumps can be specified in a choice of polypropylene or PVDF and have extended dry-running capability. In fact, when specified with a carbon bushing DB pumps can be dry-run for hours, making them less prone to operator error or system upset.

DB pumps offer high working pressure capability (up to 90psi) which means fluids with a high specific gravity (over 1.8) can be easily pumped without the need for impeller trimming. They have a maximum operating temperature of 180F (82C) for the polypropylene model and 220F (104C) for the PVDF option.

High operating efficiency and lower energy costs are key objectives for all pump operators and DB pumps make an important contribution with operating efficiencies up to 70%. For example, DB pumps with electric motors use significantly less energy whilst accomplishing the same work as an equivalent air-operated pump.

The DB5.5 pump is available in a close-coupled design configuration for optimum magnet alignment and they feature evenly spaced impeller trims enabling duty points to be precisely met. Also a two-piece impeller design allows the impeller or inner drive magnet to be individually replaced without having to replace the inner drive.

As a result of the non-metallic materials used for all the key wetted components they are ideal for handling corrosive liquids in chemical manufacturing, metal plating, surface treatment, wastewater treatment, electronics manufacture or wherever hazardous liquids need to be transferred safely and efficiently. Finally, the pump is designed for either horizontal or vertical installation (vertical when equipped with an IEC motor).

Picture: Michael Smith Engineers

Source: Michael Smith Engineers

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