October 29, 2020

How does the high pressure valve work? What are the advantages of a high pressure ball valve?

Everyone knows that we learned about this aspect of high-pressure gas valves during the high school period, so it must be said that it will not be unfamiliar. With the continuous development of the current production, many smart air valves have appeared in the market. The high pressure air valve is such a type of air valve. Then let's take a look at the working principle of the high-pressure gas valve and the relevant content of the high-pressure ball valve.

High pressure valve works

1. In general, we need to use high-pressure gas valves in many places in our lives. This device is actually designed for the flow of liquids and gases. It is mainly controlled by a coil. When the coil is energized, the magnetic field is created and the plunger in the coil moves with it. The design of the valve allows it to turn any one of the heuristics off. After the current has been removed from the coil, it will return to off. status. The common high-pressure gas valve generally has two ports, namely, an inlet and an outlet. The two ports can allow the gas to be controlled more freely by people, and the reliability of operation is also very high.

2. Generally speaking, in the process of using high-pressure gas valve, we can adjust the pressure of the gas valve. We need to directly adjust the pressure using the spring, then the spring stiffness must be too large. When the flow rate changes, the output pressure fluctuates greatly. The size of the structure will also increase. In order to overcome these disadvantages, a pilot-operated pressure reducing valve can be used. The working principle of the pilot operated pressure reducing valve is basically the same as that of the direct acting type. The regulator gas used in the pilot pressure reducing valve is supplied by a small direct-acting pressure reducing valve. If the small direct-acting pressure reducing valve is installed inside the valve body, it is called an internal pilot pressure reducing valve. If a small direct-acting pressure reducing valve is installed outside the main valve body, it is called an external pilot pressure reducing valve.

3. If the interior of the high-pressure gas valve is a pilot-operated pressure reducing valve structure, compare it with a direct-acting pressure reducing valve. The high-pressure gas valve also adds a nozzle 4, a baffle plate 3, and a fixed throttle hole 9, The chamber b is composed of a nozzle baffle amplification section. When the distance between the nozzle and the baffle slightly changes, the pressure in the chamber B will change significantly, causing the diaphragm 10 to have a large displacement. To control the movement of the spool 6 up and down, so that the intake valve port 8 to open large or small, increased the sensitivity of the control of the spool, which improves the accuracy of the regulator. The main valve of the external pilot pressure reducing valve works in the same principle as the direct acting type. There is also a small direct-acting pressure reducing valve outside the main valve body, which controls the main valve. This type of valve is suitable for applications where the diameter is over 20mm, long distance, high point, dangerous place, and difficult pressure adjustment.

What are the advantages of high pressure ball valve?

1. Advantages of High-Pressure Ball Valves Let's take a closer look. First of all, among the types of valves, the ball valve is the smallest in terms of fluid resistance. Even a reduced diameter ball valve has a relatively small fluid resistance. The switch is quick and convenient. As long as the valve stem rotates by 90°, the ball valve can be fully opened or fully closed. It is easy to open and close quickly. Sealing performance is good, ball valve seat seals generally use PTFE and other elastic materials, easy to ensure that the seal, and the ball valve sealing force increases with the increase of the medium pressure.

2. The advantage of the high-pressure ball valve is that its stem seal is very good. When the ball valve is opened and closed, the valve stem is only used for rotation. Therefore, the packing seal of the valve stem is not easily damaged, and the sealing force of the valve stem back seal increases with the increase of the medium pressure. Ball valve opening and closing only 90 ° rotation, it is easy to achieve automatic control and remote control, ball valve can be configured pneumatic device, electric device, hydraulic device, gas-liquid linkage device or electro-hydraulic linkage device.

The above information about the working principle of the high-pressure gas valve and the advantages of the high-pressure ball valve are introduced here. I hope this helps everyone. If you still don't understand where you can pay attention to more news, if you want to learn more about this news, please continue to pay attention to our website.

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