Series operation


The pumps are connected in series (one behind the other) with the discharge of the first pump entering the suction of the second pump.

This arrangement allows us to double the head (pressure) of the pump without increasing the capacity (flow). Multi-stage pumps perform the same function.


The most common use for this series arrangement is in petroleum pipeline applications or any time you need a booster pump to compensate for head losses in a long piping arrangement. The shaft speed and impeller widths must be the same in any series configuration or the difference in the pumps’ capacities could cause cavitation, or over heating problems.

  • In this illustration you can see the affect on the pump curve when two pumps are connected in series.
  • You can also see the affect if the same pumps are connected in parallel.


  • On February 17, 2018