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Leak-free pumps suit tough tasks

Leak-free pumps suit tough tasks
The DB22 model, which is capable of handling capacities up to 50m3/hr at maximum differential heads up to 45m, has been added to the Finnish Thompson range of plastic magnet-drive centrifugal pumps. Available through Michael Smith Engineers, these leak-free pumps are suitable for most challenging liquids transfer applications occurring in corrosive and challenging environments.

As a result of the non-metallic materials used for both the housing and all the key wetted components, they are ideal for pumping corrosive liquids in chemical manufacturing, metal plating, surface treatment, wastewater treatment, electronics manufacture or wherever hazardous liquids need to be transferred safely. They are available in a close-coupled design configuration for optimum magnet alignment and provide extended dry-running capability when specified with a carbon bushing and are therefore protected from system upsets.

Other features include: high operating efficiency resulting in lower energy consumption; improved hydraulic coverage for both 50 and 60Hz operation; evenly spaced impeller trims enabling duty points to be precisely met; and a two-piece impeller design that allows the impeller or inner drive magnet to be individually replaced.

DB Series pumps offer high working pressure capability, which means fluids with a high specific gravity can be pumped without the need for impeller trimming. The pumps are designed for either horizontal or vertical installation (vertical when equipped with an IEC motor), have a maximum operating temperature of 82degC for the polypropylene model and 104degC for the PVDF option.
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