What Causes Ragging in Sewage Pumps?

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Ragging in sewage pumps is primarily caused by the accumulation of solids, particularly fibrous materials, on the impeller, which leads to decreased efficiency and potential blockages. Key factors contributing to this issue include poor maintenance, broken seals, excessive usage, and impeller wear due to cavitation. Regular inspection and maintenance are essential to prevent ragging and ensure optimal pump performance. Understanding the materials that can cause ragging, such as rags and other non-biodegradable items, is crucial for effective sewage pump management. Proper disposal practices can significantly reduce the risk of ragging in sewage systems.
Mohiden
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Hello,

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
 
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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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