A butterfly valve is a specialized valve used to control liquid or gas flow through pipes. The rotating disc in the valve is controlled by an exterior wheel, allowing it to be completely shut off when necessary.
There are several types of butterfly valves, each with a unique purpose. A high performance butterfly valve is used to control the flow in systems with extremely high pressure. A pneumatic butterfly valve, on the other hand, is optimal for pressurized air systems that operate at a much lower pressure. For more complex systems, butterfly valves with multiple shut-off points are necessary. A triple offset butterfly valve provides a tighter seal because it is mounted in three positions.
Further versions of the butterfly valve use a different method of pipe connection. A flanged valve, for example, has raised edges in the enclosure so that the valve can be bolted in between two pipes. Another type of valve called a wafer butterfly valve is installed in between two flanges with nuts and bolts. A traditional valve has a manually operated control lever, but electronic controls are also possible and even desirable for automated systems. Read More…
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Butterfly Valve Informational Video