Active Aqua Submersible Water Pump, 800 GPH
Possible homebrew uses: Recirculating draft line cleaner build or as part of a recirculating wort chiller setup.
I use a similar (completely different model and manufacturer) in my Recirculating Draft Line Cleaning Build.
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Make sure the components you use are compatible and rated for your intended application. Contact manufacturer with questions about suitability or a specific application. Always read and follow manufacturer directions.