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Liquiflo Poly-Guard brochure - .PDF file.

The Liquiflo Poly-Guard series PFA-lined magnet drive gear pumps available from Michael Smith Engineers are suitable for accurate and reliable pumping of challenging liquids such as hydrochloric acid, ferric chloride, sulphuric acid, hydrofluoric acid, sodium hypochlorite, nitric acid, sodium hydroxide and chromic acid.

The pumps feature non-metallic wetted parts and offer important characteristics such as zero leakage and therefore safer pumping. They are available in seven sizes in both DIN and ANSI flanged connections; they provide flows up to 47 litres per minute at differential pressures to 7 bar; and they can operate at temperatures to 90ºC.

The Liquiflo Poly-Guard series pumps have recently been used to pump hot hydrochloric acid into a chemical reactor at a speciality chemical manufacturer; to inject ferric chloride into a wastewater treatment process; and to circulate a hot mixture of solvents and hydrochloric acid at a speciality chemical manufacturer.

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Key features and benefits

  • The PFA-lined stainless steel housings do not suffer from the wicking problems associated with fibre-reinforced housings.
  • The effects of heat entrapment and corresponding thermal expansion issues are minimised, as are the effects of fluid absorption.
  • The stainless steel housings also increase the strength and durability required for process pump applications.
  • In addition to their corrosive resistance, Liquiflo Poly-Guard PFA-lined pumps provide smooth, pulseless flows so they are easy to monitor and control.
  • The accurate output (within ±2 per cent) of the Liquiflo Poly-Guard pumps means wastage is eliminated. 
  • The pumps are designed for easy servicing so downtime for routine maintenance is minimal.

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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