First, use: 

 The butterfly valve suitable for medium temperature ≤ 80 ℃, nominal pressure 1.0MPa the medium is water, oil pipeline. 

 Second, the structural characteristics: 

 The butterfly valve for my company to introduce products, design, manufacture, testing by the United States ANSI/AWWA-C504-80 standard flange size according to the standards of GB2555-81, the new structure, switch light and flexible, good sealing performance, the use of long life over the world. 

 Third, it works: 

 The valves are manual, worm gear rotation, electric, pneumatic and other drive through the stem disc rotates 90 ° to open and close and seal the role of regulating traffic.