Page 144 - Centrifugal Pumps Design and Application

122 Centrifugal Pumps: Design and Application

Figure 9-9. Barrel-mounted pulf-out pump.

ally a face-type mechanical seal. The discharge head supports the driver,
which should preferably be of the solid shaft design, either as a direct
electric motor drive or a horizontal driver through a right angle gear. The
unit is typically supported under the top flange of the suction barrel and
bolted to an adequate foundation with a desired mass of five times the
total unit weight. If desired, the entire barrel can be embedded in con-
crete or thermally insulated for high or low temperature applications.

Applications
Weil Pumps
The most common applications for well pumps are:

* Water well, or bore hole installations, using either a surface-mounted
driver or a close-coupled submersible motor.
• Incline-mounted water pumps installed on lake or river banks and
driven by a conventional electric motor or a close-coupled submersible
motor.