Distance between pumps run in series?

Discussion in 'Geothermal Loops' started by mrlegoman, Sep 15, 2017.

  1. mrlegoman

    mrlegoman New Member

    I have a geothermal loop (1" PE) which I am running a set of pumps in series to attain my head height. I know from general rules of pump piping to leave 5-10 the diameter on the suction side to attain uniform velocity. But cannot find information on a min distance between pumps. I'd like to assume the same 5-10 times diameter. But with space considerations, I'd also like a simple nipple connection.
  2. urthbuoy

    urthbuoy Well-Known Member Industry Professional Forum Leader

    None. Flange to flange if required.
  3. docjenser

    docjenser Well-Known Member Industry Professional Forum Leader

    I might add that having to run 2 pumps in series is covering up an inherent design issue. Putting in a larger diameter loop, or splitting ups the loop between multiple circuits, would significantly lower pumping power and likely void the need for 2 pumps in series..... just saying....

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