Page 77 - Know and Understand Centrifugal Pumps
P. 77
One stage, end suction, back-pullout construction. See more
information on this in Chapter 7.
w The pump's weight and foot supports are mounted on the shaft
centerline.
- Designed for high temperature services above 350" F.
- This minimizes pipe strain and thermal expansion and distortion.
Utilizes a closed impeller with balance holes.
w The holes reduce stuffing box pressures and balance axial loading.
Vertical turbine pumps
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This type of pump is similar to others except that the impellers
discharge into a diffuser bell type housing instead of the volute. The
diffuser has multiple veins or ribs that direct the pumped liquid through
a column or into the next impeller (Figure 6-10).
w The diffuser equalizes radial loading on the shaft, impeller and
journal bearings.
Figure 6-10
