ABSTRACT
Pumps are classified into various categories based on
their principle of operation, the types of products they
can handle, the regulatory requirements they meet, and
other criteria. However, the most common classification
of pumps is based on its principle of operation. Based on
this criterion, pumps are classified into two broad cate-
gories-dynamic Table 1 and displacement Table 2.
In dynamic pumps, energy is constantly supplied to the
product and the speed of the product within the pump
reaches a value much higher than that at the discharge
port so that a reduction in speed at or beyond the discharge
port causes an increase in pressure. In a displacement
pump, energy is intermittently supplied to the product by
applying force to one or moving parts of the pump that
directly increases the pressure of the product to the value
required to move the product to the discharge port.
Karassik et al.[1] and Perry et al.[2] have described various
types of pumps in detail.
