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How to solve centrifugal pump discharge problems

If your centrifugal pump isn’t discharging properly, there are a number of potential faults and solutions. Here we examine some of the most common.

  • Impeller damage, often caused by cavitation, affects a pump’s discharge capacity – check the component and replace if necessary.
  • The suction piping may not be wide enough; if this is the case then the pump inlet should be made larger.
  • Check for air leaks in the suction line and repair with pipe sealing compound if necessary.
  • Is the foot valve large enough? It should be at least as large as the suction pipe.
  • The suction lift may be too high. If so, then a foot valve and prime may need to be installed.

If you have a pump problem you can’t solve, give Gibbons a call. We supply and repair swimming pool pumps, Lowara submersible pumps and grinder pumps to name just a few, so call Matthew Gibbons on 07970 676272 or email matthew@gibbonsgroup.co.uk for expert assistance.  

Pumps & Controls

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