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How to Install a Butterfly Valve

Butterfly valves are most commonly found between sections in tubes and pipes. Their purpose is to either isolate or regulate the flow of whatever materials pass through the tubes or pipes. Butterfly valves are a type of quarter-turn valve, so named for the way the metal disc moves in a manner similar to a butterfly flapping its wings back and forth. A butterfly valve contains a pivoting metal disc mounted on a rod that is connected to an actuator located on the outside of the valve. The disc is designed to fit flush with the tube or pipe and allows for quick shut off if necessary. In the open, or parallel, position, the disc is turned a quarter past the original position. This will allow for materials to pass through the tube or pipe. When the valve is closed, turned perpendicular ... Read more

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