CENTER LINE DESIGN C022-5

CENTER LINE DESIGN C022-5

The illustration on the right shows a standard centrifugal pump with the feet attached to the bottom of the pump volute. Thermal expansion of the volute causes the volute to move straight up causing several problems:

  • Pipe strain of the suction piping.
  • The mechanical seal stationary face will move off center from the rotating seal face.
  • In a stationary seal design the stationary face will “wipe” across the rotating face.
  • The rotating wear ring can contact the stationary wear ring in closed impeller designs.

Now take a look at the illustration on the left that describes a “center-line” design.

This design allows the volute to thermally expand both up and down, eliminating the growth problems.

Category

Posted

  • On February 15, 2018