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Slide Gate valves are linear motion valves used for full bore fluid flow without any change in direction. They are designed to provide an efficient method for controlling the flow of free-flowing dry bulk materials. It is an ideal valve for transmission and interruption of fluid movement which is mainly suitable for crude, gas pipes, petrochemical oil depots, and other pipelines in the industrial process. The face of this type of valve is mostly parallel and hence they are often referred to as Parallel Slide Gate valves. They are generally either fully open or fully closed and are not normally used to regulate flow. However, slide gate valves can also be installed at the outlet of an oil pump to regulate and control the flow of liquid. A typical slide gate valve is shown in the figure