Problematic pumps: The influence of process conditions on pump performance

Every process has problematic pumps

Every production company has pumps that cause more problems than usual. Often the pump appears to be the bottleneck, without considering the influence of all relevant process conditions.

Process conditions and pump selections

To ensure that a pump runs at its 'best efficiency point' (BEP), factors such as suction and discharge conditions, valve control, fluid properties and operating temperatures must be taken into account when selecting a pump that perfectly matches your process.

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Important process conditions affecting pump performance

  • NPSH (required suction pressure): if the pressure on the suction side of the pump is too low, there is a risk of vapor lock. If the pressure then increases, these bubbles will implode (cavitation)
  • Valve control: Sudden valve closures can cause high pressure peaks to be 'bounced back' to the pump, potentially causing damage to the pump, piping and other components
  • Alignment: misalignment of the suction and / or discharge pipes in relation to the pump flanges leads to excessive stress on the piping
  • Medium properties: the viscosity, abrasiveness, chemical properties, solids and structure of the fluid handled has a strong influence on the operation of the pump
  • Temperature: the operating temperature of the medium and the rate at which the temperature changes also affect pump performance
  • And more!

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