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Sewage pump ragging

  1. Jan 27, 2013 #1

    I would like to know what causes a RAGGING in sewage pump?

    Here are some causes that I can think of but I need more.

    Poor maintenance
    Broken seal
    Exessive usage
    impeller wear-cavitation

    Many thanks
  2. jcsd
  3. Jan 27, 2013 #2


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    Hi Mohiden. Pump ragging is the buildup of solids on the impeller, causing the pump to loose efficiency or to become blocked. Ragging refers to rags or other fibrous materials that people might flush down a toilet.
    See for instance:
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