Page 62 - Centrifugal Pumps Design and Application

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General Pump

Design

It is not a difficult task to design a centrifugal pump; however, design-
ing the right pump for a specific application related to a specific industry
and service requires an extensive knowledge of hydraulics. Also required
is experience with industrial specifications, end users, and contractors'
special requirements and many years of practical experience in engineer-
ing and marketing.
The variables that exist for pump requirements are so numerous that
the design of the right pump in the right service is a complex project.
There is no such product as the "universal pump."
As an example, let us take a pump that is required to produce 500 GPM
and 200-ft head, rotating at 2 or 4 pole speed. In any or all industries this
hydraulic requirement exists; however, the mechanical specifications are
entirely different for each and every industry. For instance, the type of
pumps used in the pulp and paper industry are entirely different from
pumps used in the petroleum industry, petrochemical industry, or chemi-
cal industry. Thus, the pump required to deliver 500 GPM and 200-ft
head, will be different for each of the following applications:

« Slurry
• Boilerfeed
• Pipeline
» Nuclear
• Municipal
• Agricultural
• Marine
• Cargo
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