How to distinguish between ball valve and butterfly valve

The well-known difference between a ball valve and a butterfly valve lies in its opening and closing parts. The opening and closing part of a butterfly valve is a plate, while that of a ball valve is a ball. In addition, there are obvious differences between the two in terms of cut-off method, structure and working principle.

Different deadlines

The ball valve blocks the channel through the sphere, so that the circulation of the pipeline is stopped; the butterfly valve is close to the butterfly wing, and the pipeline will not flow after it is diffused and closed.

Different structure

Ball valve is composed of valve body, valve core and valve stem assembly, only part of the components can be seen; butterfly valve is composed of valve body, valve seat, valve plate and valve stem. All accessories are exposed. Therefore, it can be seen that the sealing performance of the butterfly valve is not as good as that of the ball valve. When it comes to sealing, butterfly valves are also divided into soft sealing and hard sealing. The butterfly valve has a relatively simple structure and can only be used in low-pressure environments, with a maximum pressure of only 64kg. Compared with the ball valve, the ball valve can reach about 100kg.

Works differently

The ball valve has a 90 degree rotation action, just because its opening and closing part is a sphere, only 90 degree rotation can open or close, which is the most suitable for switch. But now V-shaped ball valves can be used to regulate or control the flow. Butterfly valve is a disc that opens and closes, and rotates 90° in the opposite direction. It is a valve that opens, closes or adjusts the flow of the medium. It has a good function of adjusting the flow and is one of the fastest-growing valve varieties.
The above is all about how to distinguish between ball valve and butterfly valve. In fact, understanding the working principle of the two is actually very easy to distinguish. You can choose according to actual needs during use.