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Michael Smith Engineers has developed the Hydra-Cell seal-less positive displacement pump, which is capable of pumping resinous glue at high temperatures — as required for manufacturing oriented strand board (OSB), a timber-based building product.

According to the company, OSB is an environmentally sustainable timber-based material, suitable for both structural and non-structural building applications, and is manufactured by compressing strands of wood with resins at high temperature to create strong and versatile panels.

Originally gear pumps were being used to deliver the resinous glue into a mixing chamber, where it is sprayed onto wood fibres in the early stages of the manufacturing process — but these pumps leaked through their mechanical seals, causing damage and resulting in the need for frequent replacements.

This problem was solved by installing a Hydra-Cell pump, whose seal-less design left no dynamic seals to leak, wear, or replace, while their spring-loaded, horizontal disk check valves enabled the pump to process liquids containing particulates up to 500 or greater microns in diameter without problems.

Key pump features

  • Covers flow rates from 0.4 litres/min up to 128 litres/min
  • Covers pressures up to 172 bar
  • Handles liquids that are dirty and that contain particulates
  • Leak-free and self-priming
  • Can be run dry

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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