What Is The Difference Between Pneumatic Ball Valves And Pneumatic Butterfly Valves?

According to the valve type, the pneumatic actuator valve could be divided into pneumatic ball valves and pneumatic butterfly valves.

Pneumatic ball valve is a valve that uses a ball with a circular channel as the opening and closing part, and the ball rotates with the valve stem to realize the opening and closing action. The opening and closing part of the ball valve is a sphere with holes, which rotates around the axis perpendicular to the channel, so as to achieve the purpose of opening and closing the channel.

Pneumatic butterfly valve is a quarter valve used to open, close and regulate fluid flow. It has a simple operation. A 90-degree rotation of a valve or actuator completely opens or closes fluid flow.

Working Principle

Pneumatic ball valve has a 90-degree rotation action, just because its opening and closing part is a sphere, it can be opened or closed only by operating a 90-degree rotation, which is the most suitable for switching. But now the V-shaped ball valve can be used to regulate or control the flow.

Pneumatic butterfly valve is a kind of valve that uses a disc-type opening and closing member to reciprocate about 90° to open, close or adjust the flow of the medium. It has a good function of adjusting the flow and is one of the fastest-growing valve varieties.



Pneumatic ball valves always rotate, no matter how much pressure is applied. Once opened, the pressure hardly drops because the hole in the ball allows 100% flow of gas or liquid.

Pneumatic butterfly valves are constructed so that a portion of the valve flap always interferes with the flow of liquid or gas. This means that there is always a pressure drop when using a butterfly valve. This also means that the butterfly valve may be difficult to open



Pneumatic ball valves are more effective at sealing than pneumatic butterfly valves, so ball valves are generally better suited for projects involving gas flow.

Pneumatic butterfly valves are typically less expensive to build and maintain, so they are commonly used in large municipal water and sewer projects. They are also common in projects that control the flow of water in rivers or streams.

Any demand for pneumatic ball valves or pneumatic butterfly valves, feel free to consult us at sales@covnaactuator.com for a suitable valve solution.