I recently replaced my Chugger Pump with a Blichmann Engineering RipTide and am SO glad I did. See why I switched and my review of both pumps!
Blichmann Engineering: https://www.blichmannengineering.com/
The RipTide: https://www.blichmannengineering.com/riptide-brewing-pump.html
RipTide Amazon Affiliate Link (throw me a bone): https://amzn.to/2BM8RCg
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(I get small commission from each purchase you make.)
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