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Available from Michael Smith Engineers, the Finish Thompson DB5.5 plastic magnetic-drive seal-less centrifugal pump is suitable 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.

The pump covers flow rates up to 5m3/hr and differential heads to 6.5m, and is designed and built to provide seal-less, magnetic-drive pumping in the most corrosive and challenging environments.

The pump is designed for horizontal or vertical installation — vertical when equipped with an IEC motor. 

Key specifications

  • Can be specified in a choice of polypropylene or PVDF
  • Extended dry-running capability
  • Can be dry-run for hours when specified with a carbon bushing
  • Offer working pressure capability to up to 90psi
  • Fluids with a specific gravity of more than 1.8 can be easily pumped without the need for impeller trimming
  • Maximum operating temperature of 180ºF (82ºC) for the polypropylene model and 220ºF (104ºC) for the PVDF option
  • High operating efficiency and lower energy costs
  • Operating efficiencies up to 70 per cent
  • Available in a close-coupled design configuration
  • Feature evenly spaced impeller trims, enabling duty points to be precisely met
  • Two-piece impeller design
  • Impeller or inner drive magnet can be individually replaced without having to replace the inner drive                          
  • Non-metallic materials used for all the key wetted components

Michael Smith Engineers

Michael Smith Engineers Ltd,  the UK’s leading pump specialist for difficult liquid handling applications since 1971,  provide representation in the UK for specialist pump manufacturers, with particular emphasis on sealless leak free pump technology.  Our product range includes magnetically driven gear pumps, magnetically driven centrifugal pumps (including metal, plastic and lined centrifugals),  canned motor centrifugal pumps, peristaltic pumps, tubular diaphragm pumps, metering pumps, valveless piston pumps, turbine  pumps,  high pressure diaphragm pumps, vane pumps and barrel emptying pumps. We can supply pumps in a wide choice of wetted materials for liquids between 0.2 cP and 500,000 cP, temperatures between -50 oC and +400 oC,  capacities from nanolitres per hour to m3  per minute and can offer pumps for  high system pressures up to 350 Bar and high discharge pressures up to 500 Bar.  Corrosion resistant materials are available for many of our ranges include metallic options of stainless steel and high nickel alloys or plastic options of PVC,  polypropylene, PVDF and ETFE. The main markets we service with our ranges of pumps are the chemical, petrochemical, pharmaceutical and process sector with our larger pumps  as well as laboratories, research and development institutions and OEMs with our smaller pumps.  

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