This is a flanged gate valve, which is mainly used in industrial piping systems to open or cut off the pipeline medium (such as water, oil, steam, etc.). It belongs to the open stem gate valve. When you turn the handwheel, the valve stem will rise and fall. You can intuitively judge the opening degree of the valve through the height of the valve stem. There are disc-shaped flanges on the left and right sides of the bottom for connecting with pipes by bolts. There is a ram inside, and its movement direction is perpendicular to the fluid direction. It is usually only fully open or fully closed use, but not suitable for regulating flow (throttling), because the fluid in the half-open state of the ram erosion will be very serious.

Valves are control components in fluid transport systems, with functions such as shut-off, regulation, diversion, prevention of backflow, stabilization, diversion, or overflow pressure relief. Valves used in fluid control systems have a wide variety of varieties and specifications, from the simplest globe valves to various valves used in extremely complex self-control systems.