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  1. joefiegl

    Liquid Rheostat vs VFD

    Thanks for the response. We are looking at variable speed pumping because we would like to simulate gravity flow, since there are sensitive downstream hydraulic issues that would make flow surges associated with constant speed pumping unattractive. I knew that liquid rheostats were becoming...
  2. joefiegl

    VFD vs Liquid Rheostat Controls

    For a variable speed pumping application, what are the main advantages of variable frequency drive (VFD) over liquid rheostat controls? Are there any advantages of liquid rheostats over VFDs? Any help would be much appreciated. Thanks.
  3. joefiegl

    Liquid Rheostat vs VFD

    For a variable speed pumping application, what are the main advantages of variable frequency drive (VFD) pumping over liquid rheostats? Are there any advantages of liquid rheostats over VFDs? Any help would be much appreciated. Thanks.

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