Plug valves
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Plug valves
The plug valve is a quick-switching straight-way valve. Since the movement between the plug sealing surfaces has a wiping effect, it can completely prevent contact with the flowing medium when fully open, so it can usually be used for media with suspended particles. According to the structural form, it can be divided into four types: tight-fitting plug valve, self-sealing plug valve, plug valve and oil-filled plug valve. According to the channel form, it can be divided into three types: straight-through plug valve, three-way plug valve and four-way plug valve. There are also sleeve-type plug valves, which are classified according to their uses: soft-sealed plug valves, oil-lubricated hard-sealed plug valves, and lift-type plug valves.