Project description
Butterfly Valves are used for isolating and regulating flow. The closing mechanism is a disc that allows for quick shut off, much like a ball valve. Butterfly valves are light in weight so they require less support. Unlike the ball valve, the disc is always present within the flow, therefore a pressure drop is always induced during flow, regardless of valve position. The disc is typically rotated a quarter turn when the valve is fully opened, but the valve may also be opened incrementally in order to throttle flow.
Butterfly valve consist of a disk which forms a seal against an elastomer or metallic seal. The disc rotates inside the body thereby restricting or allowing the flow. Butterfly valves are very versatile. It can be used for manual or process control, throttling on/off of liquids or gases. They are often used because of their shot take-outs and lower costs.
