Tuesday Tip: Proper Sump Design

Proper sump design on wet wells and collection ponds help avoid air entrainment in pumps. That air entrainment can lead to cavitation, loss of efficiency, increased maintenance, and shorter pump life.

Below are some suggestions to better design sumps to avoid problems. 

Use a straight sump with low average velocity and pumps set near the rear wall. For pumps larger than 4000 GPM, more detailed design may necessary.
The same concepts as above apply to pipe fed sumps. Slow velocity changes reduce vortexing.
Never predispose a flow to rotation. Do not place obstructions such as posts or walls in the flow path.
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