Flanged butterfly valve characteristics

The center of rotation of the butterfly plate (ie the center of the valve stem) is located on the centerline of the valve body and the sealing surface section of the butterfly plate. The valve seat is made of synthetic rubber. When closed, the outer circular sealing surface of the butterfly plate squeezes the synthetic rubber valve seat, which makes the valve seat elastically deform, thus forming an elastic force as the sealing pressure to ensure the sealing of the butterfly valve. The sealing structure of the flange butterfly valve adopts PTFE and synthetic rubber to form a composite valve seat. The life of the butterfly valve is improved.

The sealing principle and structural characteristics of the flanged butterfly valve are the same as those of the ordinary midline butterfly valve.

Picture of Lixun butterfly valve

Picture of Lixun butterfly valve

The sealing structure of the flange butterfly valve adopts PTFE, synthetic rubber and phenolic resin to form a composite valve seat, which makes the valve seat have better strength while having elasticity. At the same time, the butterfly plate is fully covered with PTFE, so that the butterfly plate has strong corrosion resistance.

The main features of flanged butterfly valve are:

1. Small and light, easy to disassemble and maintain, and can be installed in any position.

2. The structure is simple and compact, the operating torque is small, and the 90° rotation can be opened quickly.

3. The flow characteristics tend to be straight, and the adjustment performance is good.

4. The connection between the butterfly plate and the valve stem adopts a pin-free structure, which overcomes the possible internal leakage point.

5. The outer circle of the butterfly plate adopts a spherical shape, which improves the sealing performance and prolongs the service life of the valve. It still maintains zero leakage for more than 50,000 times of opening and closing under pressure.

6. The seals can be replaced, and the sealing is reliable and can achieve bidirectional sealing.

7. The butterfly plate can be sprayed with coating according to user requirements, such as nylon or PTFE.

8. The valve can be designed as flange connection and wafer connection.

9. The drive mode can be manual, electric or pneumatic.

Flanged butterfly valve is suitable for temperature ≤120℃ or ≤150℃, nominal pressure ≤1.6MPa water supply and drainage, sewage, food, heating, gas, ship, hydropower, metallurgy, energy system and light textile industries, especially suitable for two-way sealing and Where the valve body is easy to corrode, it is used for regulating flow and intercepting medium.