Time：2021-03-17 13:16 Browse：
Advantages of butterfly valve
1、Easy to open and close quickly, labor saving, fluid resistance is small, can often operate.
2、Simple structure, small volume, light weight.
3、Can transport mud, minimum liquid accumulation at pipe mouth.
4、Good sealing can be achieved under low pressure.
5、Good adjustment performance.
Disadvantages of butterfly valve
1、Use pressure and operating temperature range is small.
2、Poor tightness.
Installation and maintenance of butterfly valve
1、During installation, the disc should stop in the closed position.
2、The opening position should be determined according to the rotation Angle of the disc.
3、Butterfly valves with bypass valves should be opened before opening.
4、According to the manufacturer's installation instructions for installation, heavy butterfly valve, should be set up a solid foundation.
5、The disc of the butterfly valve is installed in the diameter direction of the pipe. In the cylindrical passage of the valve body of the butterfly valve, the disc-shaped disc rotates around the axis at a rotation Angle of 0°~90°. When the valve is rotated to 90°, the valve is fully open.
6、If butterfly valves are required for flow control, it is important to choose the correct valve size and type.
The structure principle of butterfly valve is especially suitable for the manufacture of large diameter valve. Butterfly valve is not only widely used in petroleum, gas, chemical industry, water treatment and other general industries, but also in thermal power plant cooling water system.
7、Commonly used butterfly valve has a pair of butterfly valve and flange butterfly valve. The wafer butterfly valve is connected between two pipe flanges with double head bolts. The flange butterfly valve is equipped with a flange on the valve, and the two ends of the valve are connected to the pipe flange with bolts.