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How did you chose ball valve and butterfly valve?

Writer:Fanny KangDate:2017-4-18 16:40

How did you chose ball valve and butterfly valve?

 

Ball valves and butterfly valves are commonly used valves. Some occasions can be universal, and some conditions can only be used in the meantime. The difference between the two lies in the construction and switching principle.

 

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First, the ball valve: plug valve evolved from the opening and closing pieces of the ball. feature is:

1. The fluid resistance is small, the full diameter of the ball valve is no flow resistance.

 

2. Simple structure, small size, light weight.

 

Tight and solid. It has two sealing surface, and now the ball valve sealing surface information widely used in a variety of plastic, good sealing, to complete a thorough seal. In the vacuum system has also been widely used.

 

4. Easy to operate, open and close, from full to full off as long as the rotation 90 °, easy to remote control.

 

5. Repair convenience, ball valve structure is simple, the seals are usually active, open replacement are more convenient.

 

6. When fully open or fully closed, the ball and valve seat sealing surface and the media isolation, the media through, will not cause the valve sealing surface corrosion.

 

7. Applicable to a wide range, diameter from small to a few millimeters, large to a few meters, from high vacuum to high pressure can be used.

 

8. Because the ball valve in the opening and closing process scrubbing, it can be used for suspension of solid particles in the medium.

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Second, butterfly valve: open and close pieces are disc-shaped open, characterized by:

 

1, simple structure, small size, easy to install;

 

2, flow resistance coefficient is small, open and close agile,

 

3, can be used for large diameter valves;

 

4, can use a different sealing surface, the use of a variety of environments, including powder, granular media;

 

5, open and close convenience agility, effort, fluid resistance is small, can often operate.

 

6, able to transport mud, in the pipeline mouth to keep the liquid at least.

 

7, low pressure, to complete the outstanding seal.

 

8, conditioning performance is good.

 

The summary:

Butterfly valve relative to the ball valve, the sealing is slightly worse, but the large diameter valve, the butterfly valve than the ball valve to have a unique advantage; as the conditioning flow when the butterfly valve conditioning is not large, and V-conditioning valve, In addition, in the high-pressure pipeline, the ball valve than the butterfly has an advantage.

TypeInfo: Technical Articles

Keywords for the information:butterfly valve  ball valve  pipeline  fluid machinery