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Edition 3
Section 17
Gate
Valves
The wedge gate valve provides uninterrupted passage for the flow of fluid. Body
ends are inline and gate is moved between body seats by a spindle, whose axis
is at right angles to that of the body ends. It may be either inside screw, in which
the actuating thread of the spindle is contained inside the valve and thus in
contact with the line fluid, or outside screw, in which the actuating thread of the
spindle is exterior to the bonnet. The valve is used extensively where a straight
flow is required with minimum pressure drop. It is not recommended for flow
regulation and should only be used fully opened or closed.
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