Section 6: PUMPS AND DRIVERS
Section Overview. This section covers the operation of pumps used in
water supply facilities. It also covers the motors, engines, and accessories (together
called pump drivers) that provide the mechanical source of energy to pumps.
References. Several publications are referred to in this section as
including necessary or supplementary information on pumps and drivers. These
publications are listed below, along with the paragraph number corresponding to the
publication's listing in Section 2, Applicable Documents. For brevity, subsequent
references to each of these documents within Section 6 use only the Section 2
paragraph number. The following publications are mentioned in Section 6.
AWWA Standard for Vertical Turbine Pumps: Line Shaft and
Submersible Types (par. 2.2.35)
Centrifugal Pumps and Motors: Operation and Maintenance
Distribution System Maintenance Techniques (par. 2.2.41)
MIL-HDBK-1110, Paints and Protective Coatings (par. 220.127.116.11)
Principles and Practices of Water Supply Operations Series: Basic
Science Concepts and Applications (par. 2.1.1)
Principles and Practices of Water Supply Operations Series:
Water Transmission and Distribution (par. 2.1.4)
Pumps. Velocity pumps and positive-displacement pumps are the two
categories of pumps commonly used in water supply operations. Velocity pumps,
which include centrifugal and vertical turbine pumps, are used for most distribution
system applications. Positive-displacement pumps, which include rotary and
reciprocating pumps, are most commonly used in water treatment plants for chemical
metering and pumping sludge. Detailed descriptions of the pump types commonly used
in water supply systems, along with applications, operating characteristics, and a listing
of general advantages and disadvantages, can be found in par. 2.1.4.
Specific information on vertical turbine pumps is contained in par. 2.2.35.
Table 10 lists maximum capacity and discharge head values for several
general pump types.