Page 59 - Valve Selection Handbook
P. 59
46 Valve Selection Handbook
Each valve group represents a number of distinct types of .valves that
use the same method of flow regulation, but differ in the shape of the clo-
sure member. For example, plug valves and butterfly valves are both
rotary valves, but of a different type. In addition, each valve is made in
numerous variations to satisfy particular service needs. Figure 3-1 illus-
trates the principal methods of flow regulation and names the types of
valves, which belong to a particular valve group.
Figure 3-1. Principal Types of Valves Grouped According to the Method of Flow
Regulation.
