How To Choose The Correct Flange Ball Valve?

Introduction to the basic structure and working principle of flange ball valve

As a practitioner in the steel industry, you must know the importance of flange ball valves in the production process. But, do you really understand its basic structure and working principle? If you don’t understand, then let me take you to explore together!

1. Basic structure of flange ball valve

First, let’s take a look at the basic structure of the flange ball valve. It consists of flange, valve body, valve cover, valve core, valve seat, sealing ring and other components. Among them, the flange is the part that connects the pipes, while the valve body and valve cover are key parts that protect internal parts and control fluid flow. The valve core is the core component that controls the fluid switch. It can change the flow direction by rotating. The valve seat and sealing ring play a sealing role to ensure that the fluid does not leak.

2. Working principle of flange ball valve

Next, let’s take a look at the working principle of the flange ball valve. When the handle or electric device rotates, the valve core will also rotate. When rotated to the same direction as the pipe, the fluid can pass through smoothly; when rotated perpendicular to the direction of the pipe, the pipe will be blocked, making it impossible for the fluid to pass. In this way, control of the fluid is achieved.

3. Why choose flange ball valve?

Now that you understand the basic structure and working principle of the flanged ball valve, why should you choose it? First of all, it has the advantages of simple structure, convenient operation, and good sealing performance. Secondly, it has strong pressure resistance and can adapt to high pressure and high temperature environments. In addition, flange-type ball valves also have the characteristics of small fluid resistance and long service life, and can meet the steel industry's requirements for high quality and high efficiency.

How to choose appropriate materials and sealing materials according to the working environment

1. Understand the characteristics of the work environment

Before choosing appropriate materials and sealing materials, you must first understand the characteristics of the working environment. Different working environments may have different factors such as temperature, pressure, medium, etc., which will affect the performance and requirements of the ball valve.

2. Choose materials with good corrosion resistance

The steel industry has strict requirements for ball valves because steel itself is corrosive to a certain extent. Therefore, when choosing a suitable material, you must first consider its corrosion resistance. Generally speaking, materials such as stainless steel and cast iron have strong corrosion resistance and can meet the requirements of the steel industry for the use of ball valves.

3. Consider temperature and pressure factors

The commonly used temperature range in the steel industry is generally around -20°C to 200°C. Therefore, when choosing a suitable material, you need to consider its high and low temperature resistance. At the same time, the steel industry also has certain requirements for pressure, so when choosing a ball valve, you should pay attention to whether its pressure range meets the needs of the working environment.

4. Select sealing material according to medium

The media used in the steel industry are mostly oil, water, gas, etc. Therefore, when selecting sealing materials, their oil resistance, water resistance and gas resistance should be considered. Generally speaking, materials such as fluororubber and polytetrafluoroethylene have good media resistance and can meet the requirements of the steel industry for ball valves.

5. Consider explosion protection requirements

As an important industrial field, the steel industry has very high safety requirements. Therefore, when selecting a ball valve, you should also consider whether it has explosion-proof function. Some special occasions may require the use of explosion-proof ball valves to ensure the safety of the working environment.

6. Choose the appropriate brand according to the actual situation

When choosing a suitable flange ball valve, in addition to the above points, you should also choose a brand with high visibility and reliable quality based on the actual situation. This ensures that the ball valve has a long service life, low maintenance costs, and has professional technicians to provide after-sales service.