High Temperature Butterfly Valve. High Temperature Ball Valve. High Temperature Stop Valve Their Basic Knowledge

High temperature valves have good hardening properties and can be deep hardened, rather than the surface hardening of the anti-saw locks on the market. In general data, valves with a working temperature of t >450℃ are called high temperature valves. However, there is no unified standard for the classification of high temperature grades of high temperature valves. Here is a brief introduction to the common sense of high temperature butterfly valves, high temperature ball valves, and high temperature stop valves:

As the name suggests, the most prominent feature of high temperature butterfly valves is that they are suitable for harsh working environments with high temperatures and have strong sealing properties. High temperature valves are widely used in industries such as petrochemicals. The design and material selection during production are very particular. Let's take a detailed look at them below!

There are many types of high temperature valves, including high temperature ball valves, high temperature stop valves, etc. Among them, high temperature butterfly valves are one of the most commonly used valves. The design of high temperature valves should pay great attention to material selection. Ordinary valves are not suitable for harsh working environments with high temperature and high pressure. Excessive temperature can easily affect the mechanical and physical properties of the materials, thereby affecting the normal operation of the valves, resulting in valve leakage and flow control errors. Therefore, if the ambient temperature is high, the most appropriate solution is to choose to buy high temperature valves and see whether to buy high temperature butterfly valves according to needs.

The materials used to make high-temperature butterfly valves need to meet three basic characteristics: wear resistance, impact resistance, and high hardness. In addition, the thermal expansion of the material is the focus of material selection. High-temperature butterfly valves are more commonly used to control high-temperature gas fluids. Considering the higher damage rate of valve components under high temperature conditions, the selected materials must be hard, and the material inside the valve body should use stainless steel with higher strength. The surface of the valve body should be surfacing treated to improve the corrosion resistance of the valve and extend its service life.

This is the end of the introduction of high-temperature butterfly valves. In short, when purchasing pipeline valves, you must consider the working environment of the valve, such as choosing a special high-temperature valve in a high-temperature environment, so as to ensure the use effect and the service life of the valve.

The application range of 2PC Flanged Ball Valve is very wide, such as in some chemical, metallurgical, hydropower and other fields, but there are certain matters that need to be paid attention to during use, which will be introduced to you below.

1. Because there are multiple layers of soft and hard stacked sealing rings fixed on the valve plate of the high-temperature ball valve, when the slide plate is in a normally open state, the medium will form a flushing force on the sealing surface of the high-temperature ball valve, and the soft sealing belt in the metal interlayer will directly affect the sealing after being flushed. Therefore, during use, you must pay attention to the sealing performance.

2. When making a high-temperature ball valve, the diameter should be greater than dn 200. If the overall structure of the valve plate is too thick, there will be a great flow obstruction, that is, the diameter is limited by structural conditions.

3. In fact, the sealing performance between the sealing surface of the valve plate of the high-temperature ball valve and the valve seat mainly depends on the torque of the transmission device, which makes the valve plate press against the valve seat. If it is in a positive state, the higher the medium pressure, the tighter the sealing extrusion will be. Therefore, when the medium is backflowing, as the medium pressure continues to increase, the unit positive pressure between the valve plate and the valve seat is small and the medium pressure is strong, the seal of the high-temperature ball valve will begin to leak.

The above are the precautions for high-temperature ball valves. In the process of daily use, you must pay more attention. In order to buy higher quality and avoid wrong operation during use, the editor recommends that every consumer should understand the relevant high-temperature ball valve knowledge and know what to do, so as not to be a novice in choice and operation.

The application range of high-temperature stop valves is also very wide. For example, they are used in some industries such as chemical, pharmaceutical, water treatment, and electronic industries. The main function is in the pipeline, mainly used for cutting off. So, what are the advantages of high-temperature stop valves? Why is it so widely used?

1. Good sealing and long service life

When opening and closing, the friction of the sealing surface is very small, so it has good wear resistance. In addition, its sealing performance is also very good, and the friction between the sealing surfaces is very small, so its service life is very long.

2. Good process and easy maintenance

The opening height is relatively small, and generally there is only one sealing surface, with good manufacturing process, and later maintenance is also very simple. In addition, the structure of the high-temperature stop valve is very simple, which is very convenient in both manufacturing and maintenance. At the same time, the working stroke is relatively small, and the opening and closing time is relatively short.

3. Wide range of applications

The application range is very wide, for example, high temperature stop valves can be seen in the fields of oil and gas, power plants, mechanical equipment, etc. Not only does it have high temperature and high pressure performance, but its sealing is very tight and its service life is very long. However, the opening and closing torque is large, so its structural length is very long, which leads to large fluid resistance loss, which also limits the scope of use to a certain extent.

In short, the application range of high temperature stop valves is still very wide. With the above advantages, customers should choose those produced by regular manufacturers when choosing high temperature stop valves. After all, the quality and after-sales of such large manufacturers will be more guaranteed.