What shape does a plug valve consist of?

A plug valve typically consists of a tapered or straight cylinder design. This valve operates by using a movable element, known as a plug, which can be rotated within the valve body to control the flow of fluid through the pipeline. The shape of the plug, whether tapered or straight, allows for effective sealing against the valve seat when the valve is closed, providing a reliable shut-off capability.

In its open position, the passage through the plug aligns with the flow path, allowing fluids to move freely. The tapered design is particularly beneficial as it can provide a more compact form and can better accommodate slight misalignments in the valve seat, enhancing the overall effectiveness and durability of the valve. Understanding this structure is important for application in systems requiring efficient flow control and minimal leakage.