A pneumatic ball valve is a type of quarter-turn valve that uses pneumatic actuators to control the flow of fluids through a pipe or system. These valves are widely used in various industries for their reliability, efficiency, and ease of operation. In this article, we will explore the functionality of pneumatic ball valves, their advantages, and the common applications where they are utilized.
What is a Pneumatic Ball Valve?
A pneumatic ball valve consists of a spherical ball with a hole (port) drilled through its center. When the valve is open, the port aligns with the pipe’s flow path, allowing the fluid to pass through. When the valve is closed, the ball rotates 90 degrees to block the flow. The key characteristic that distinguishes pneumatic ball valves from traditional manual valves is the use of a pneumatic actuator, which is powered by compressed air to move the valve’s ball. The actuator is typically connected to the valve via a shaft and is controlled by an air supply, which can either be single-acting or double-acting. Single-acting actuators require air pressure to move the valve in one direction (either open or closed) while a spring returns it to the opposite position. Double-acting actuators require air pressure to both open and close the valve, providing more control and precision.
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