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Gate valves are widely used in industrial pipeline systems. One of its main advantages is that it has very little fluid resistance. When the gate valve is fully open, the medium can pass through almost unimpeded, which is crucial for pipeline systems that require large flow rate transportation.   Another important advantage of the gate valve is its ability to adapt to the medium flowing in both directions. That is to say, regardless of whether the medium flows forward or backward in the pipeline, the gate valve can work normally without worrying about the direction.   Moreover, when the gate valve is in the fully open state, the erosion of the sealing surface by the working medium is relatively small, which helps to extend the service life of the valve.

Ball valves are a highly popular type of valve. Its core advantage lies in its extremely low flow resistance, which is almost negligible and, under ideal conditions, is zero. This enables it to work efficiently in various fluid transportation systems.   Ball valves can achieve a complete seal within a wide range of pressures and temperatures, thanks to the design of the ball and the valve seat. Moreover, ball valves can be opened and closed rapidly. For some ball valve structures, the opening and closing time is only 0.05 - 0.1 seconds, making them very suitable for use in automated control systems.   For users, one of the concerns is the sealing material of the ball valve. Usually, the valve seat sealing material of ball valves is mostly polytetrafluoroethylene. Although this material has many advantages, it also has some limitations. For example, it is prone to aging at high temperatures, thus affecting the sealing performance.

Electric valves play an important role in modern industrial automation. Its greatest advantage is the realization of automatic control. Through an electric actuator, the opening and closing of the valve can be remotely controlled, which greatly improves the degree of automation and the convenience of operation of the system.   Electric valves also have the ability of precise adjustment. They can accurately control the opening degree of the valve, thus precisely regulating parameters such as the flow rate and pressure of the medium. This is crucial for some production processes with strict requirements for process parameters.   However, users need to pay attention to some issues when using electric valves. Firstly, there is the power supply problem. Ensuring a stable power supply is a prerequisite for the normal operation of electric valves. Secondly, the electric actuator is relatively complex and requires regular maintenance to ensure its performance and reliability. In addition, in some harsh working environments, such as high temperature, high humidity or corrosive environments, it is necessary to select electric valves with an appropriate protection level to prevent the equipment from being damaged.

Butterfly valves are widely used in various industries. They have many remarkable advantages. Firstly, butterfly valves have a simple structure, small volume, and light weight. This makes them easy to install and maintain. Secondly, they have a low flow resistance, which can save energy and reduce operating costs. Thirdly, butterfly valves can be used in media with suspended solid particles, and can also be used in powder and granular media according to the strength of the sealing surface. They are widely used in gas pipelines and waterways of metallurgy, light industry, power and petrochemical systems. One of the user concerns about butterfly valves is their sealing performance. Although the sealing performance of butterfly valves is not as good as that of ball valves and stop valves, with the improvement of technology, the sealing performance of some high-quality butterfly valves has been greatly improved. Another concern is their application range. Due to the limitation of butterfly valve structure and sealing material, they are not suitable for high-temperature and high-pressure pipeline systems. The general working temperature is below 300 °C and PN 40. In conclusion, butterfly valves have their own unique advantages and application scenarios. When choosing butterfly valves, it is necessary to consider various factors such as working conditions and medium characteristics to ensure the normal operation of the pipeline system.