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The butterfly valve has a small structural length and overall height, a fast opening and closing speed, a small fluid resistance when fully open, and a sensitive flow control when open to about 15 ¡ã to 70 ¡ã, the structure of the butterfly valve is most suitable for the production of large-bore valves. Butterfly valves are recommended under the following operating conditions:

1 requires throttling, regulating control flow;

2 mud media and media containing solid particles;

3 requirements of a short length of the valve structure of the occasion;

4 requirements of the opening and closing speed of the occasion;

5 small pressure difference occasions.

In the two-position adjustment, necking channel, low noise, cavitation and gasification phenomenon, a small amount of leakage to the atmosphere, there is abrasive medium, you can choose the butterfly valve.

When using butterfly valve under special working conditions such as throttling regulation or demanding strict sealing, or severe wear, low temperature (cryogenic) and so on, special butterfly valves with triple or double eccentricity requiring specially designed metal seals with regulators.