The butterfly valve is a disk that rotates around the valve shaft and is a valve for opening and closing the pipe. The butterfly valve opening and closing portion is disc-shaped on the axis of rotation of the valve body to achieve the purpose of opening or closing or adjusting. The full open state of the butterfly valve is usually less than 90°. The butterfly valve and the butterfly valve have no self-locking capability. For the positioning of the butterfly plate, the worm is mounted on the reducer. The use of a worm gear reducer not only allows the disc to have a self-locking capability, but also allows the disc to be parked in any position and also improves the valve's running performance. The special Hefei pneumatic butterfly valve is characterized by high temperature and pressure range. The valve has a large nominal diameter, the valve body is made of carbon steel, and the valve plate sealing ring uses a metal ring instead of a rubber ring. Large high temperature butterfly valves are welded by steel and are mainly used for high temperature media, smoke pipes and gas pipes.

Hefei pneumatic butterfly valve

Pneumatic hard seal ball valve

The advantages of the butterfly valve are as follows:

1. The opening and closing operation is simple and convenient, the fluid resistance is small, and it can be operated frequently.

2. Simple structure, small size and light weight.

3. When the mud is transported, the pipe mouth accumulates the least amount of liquid.

4, good sealing under low pressure

5, the adjustment performance is good.

The disadvantages of the butterfly valve are as follows:

1. The use pressure and working temperature range are small.

2. Poor sealing. According to the structure, the butterfly valve can be divided into a bias plate, a vertical plate, a slant plate and a lever type. According to the seal, it can be divided into two types: soft seal and hard seal. The soft seal type is usually sealed with a rubber ring, and the hard seal type is usually sealed with a metal ring. According to the connection method, it can be divided into flange connection and folding connection; through transmission, it can be divided into manual, gear transmission, pneumatic, hydraulic and electric.

The following matters should be noted when installing and maintaining the butterfly valve:

1. When installing, the valve flap should be stopped at the closed position.

2. The opening position should be determined according to the rotation angle of the disc.

3. Butterfly valve with bypass valve, open the bypass valve before opening.

4. It should be installed according to the installation instructions of the manufacturer. The heavy butterfly valve should be provided with a solid foundation.

Hefei Zibo Luo Industrial Control Equipment Co., Ltd. specializes in the research, development, production and sales of various types of valves. Welcome new and old customers to come and consult.

• prev：no information
• next：Whatarethehoststruct...