What is a Butterfly valve?

A butterfly valve is a valve that controls opening and closing by rotating a disk-shaped valve body. It is called a butterfly valve because the shape of the valve body resembles a butterfly. It can be used for small to large diameters, and if the inside of the valve is lined with PFA, etc., it can be applied to corrosive fluids. In addition, since the flow rate can be adjusted compared to ball valves, pressure loss is also lower than that of globe valves. However, it is difficult to use for high pressure fluid. It is also easy to operate and cheap, so it is used in various places.

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