In recent years, with the continuous development and change of gate valve market economy, China's domestic gate valve market also fluctuates. The economic market has not been particularly stable, so is the domestic and foreign market. The relative export of flange gate valve industry has weakened. But in the next 5-10 years, with the enhancement of China's overall strength and the upcoming G20 Summit (International Economic Cooperation Forum), the overall economic level will show an upward trend. At the same time, mechanical gate valve industry will also slowly pick up.

In the next few years, authoritative people analyze that the development of gate valve industry will favor flange gate valve. Flange gate valve is a kind of valve which uses the ball with circular channel as the opening and closing parts, and the ball rotates with the valve stem to realize the opening and closing action. The opening and closing part of the gate valve is a sphere with holes, which rotates around the axis perpendicular to the channel, so as to achieve the purpose of opening and closing the channel. Gate valve is mainly used for opening and closing pipeline and equipment medium.

The types of flange gate valves are relatively diversified. Gate valves can be divided into floating gate valves, fixed gate valves, elastic gate valves and oil seal gate valves according to their structural forms; they can be divided into direct energy type, angle type and three-way type according to the channel, and the three-way type can be divided into T-shaped and L-shaped. It can be divided into thread connection, flange connection and welding type. According to the driving mode, there are stainless steel pneumatic gate valve, stainless steel electric gate valve and manual gate valve.

The main advantages of flange gate valve are as follows:

1. Simple structure, relatively small size, light weight, easy to maintain;

2. Good sealing performance;

3. Suitable for frequent operation, quick and light opening and closing;

4. The fluid resistance is small;

5. The flow direction of medium can be arbitrary without the limitation of installation direction;

6. No vibration and low noise.

The working principle of the flange gate valve lies in that the valve can be unblocked or blocked by rotating the valve core. The flange gate valve has the advantages of light switch, small volume, large diameter, reliable sealing, simple structure and convenient maintenance. The sealing surface and spherical surface are often closed and are not easy to be eroded by the medium. Therefore, it is widely used in various industries.

It is also because of the great advantages of the flange gate valve and the diversification of its types, it is predicted that the flange gate valve will be the most important product in the development of gate valve industry in the next few years. In addition, with the continuous improvement of people's living standards, stainless steel valves also play a huge role in the civil field, and the market is also expanding.