Why do pumps fail?

Why do pumps fail?

According to a report by the Health and Safety Executive, mechanical sealimage 101s are widely regarded as the weakest point in any pumping system using them. They account for 80% of all pump failures, the remainder being leakage through static seals such as gaskets / O rings and bearing failure. It follows that if you eliminate the problem, you eliminate the failure.

HMD Sealless Pumps are magnetically driven, they have no mechanical seals, and only a
single, fully trapped gasket that ensures system integrity, even at high temperatures and


What are the advantages of magnetic drive over mechanically sealed pumps?

  • The mean time between failure (MTBF) for magnetic sealless drive pumps is typically three times that of mechanically sealed pumps.
  • Double mechanical seals require support systems and barrier fluid. These require constant monitoring and maintenance to work properly. Sealless pumps are far simpler and no complex support is needed. HMD
  • Mechanical seals leak across their faces (that is how they work). Magnetic drive pumps are a true zero leakage design. This eliminates potentially harmful emissions and odours associated with sealed pumps.
  • Sealless pumps are easier to maintain, have fewer working parts, no potential leak paths and no support systems to worry about.
  • There is less cost involved in system design and procurement, and no concerns regarding material compatibility or appropriate buffer liquids.

For further information, please contact CPI Technology on 021 487 4142 or info@cpitechnology.com

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