
10 Practical Centrifugal Pumps
and operate with low noise levels. These pumps are self-priming with good efficiency.
These pumps are also ideal for highly viscous liquids.
Figure 1.14
Three-spindle screw pump – Alweiller pumps
1.5 Centrifugal pumps
The centrifugal pumps are by far the most commonly used of the pump types. Among all
the installed pumps in a typical petroleum plant, almost 80–90% are centrifugal pumps.
Centrifugal pumps are widely used because of their design simplicity, high efficiency,
wide range of capacity, head, smooth flow rate, and ease of operation and maintenance.
The ‘modern’ era pumps began during the late 17th and ...