Valve sealing surface material selection guide

Valve sealing surface material

Valve sealing surface material plays a very critical role in the wide range of processing industries that includes refining, chemicals and papers. The sealing surface is the very critical surface of the valve. The sealing surface quality directly affects the service life of the valve. The Valve sealing surface material is a very important part in checking the quality of the sealing surface.

Valve sealing surface material selection guide

The selection guide sealing material is actually the very critical surface of the valve. The quality of the sealing material is affecting the service life of the valves. The sealing material is actually a very important factor in making sure to maintain the quality of the sealing surface. Below are the following factors that should be considered when selecting materials for the sealing surface of different kinds of valves.

1.   Corrosion resistant

Corrosion is the process in which the sealing surface is damaged. It is under the effect of the medium. If the Valve sealing surface is damaged then the sealing performance is not guaranteed. Though the Valve sealing surface must be corrosion resistant. The corrosion resistance of the Valve sealing surface depends on the composition of its chemical stability and the materials.

2.   Anti-abrasion

Abrasion is the damage that is caused by the material friction in the process of the relative movement. It is all done through the sealing surface of the material. This kind of damage inevitably leads to damage to the Valve sealing surface. Valve sealing surface materials have good anti abrasion performance that is mainly for gate valves. The abrasion resistant material is mostly determined by the material’s internal nature.

3.   Erosion resistant

Erosion is the process in which a Valve sealing surface is damaged. It is damaged when the medium is flowed through the Valve sealing surface at very high speed. This kind of damage is more obvious in throttle and in safety valves. It is used in a high pressure, high temperature medium. Its impact on Valve sealing surfaces and performance is very great. Being erosion resistant is also one of the most important requirements of the Valve sealing surface material.

4.   Certain degree of hardness is required

The coefficient of linear expansion of the sealing surface and the bulk material is the same. It is very important for the structure of the Valve sealing surface ring. It is very useful to avoid looseness at high temperatures and additional stress. When it is used in high temperature conditions, it is enough antioxidant, thermal cycling and thermal fatigue.

Conclusion

Valve sealing surfaces can be damaged by many means such as manmade and natural damage. Under all kinds of circumstances and selection guide it is very difficult to find Valve sealing surfaces to meet all the above requirements. Therefore people can only focus on the meeting of specific requirements through the different uses and different types of valves. For all this we should pay attention to the corrosion resistant requirement of the Valve sealing surface in high speed medium.

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leo
leo
Hi! I'm Leo, I'm a professional writer for XinHui valve, I'm responsible for writing articles on the entire website. This is not only my daily job, but also the manager of the export sales team. When you have questions about the order, I will answer your doubts for a very reason. You can leave your question and email address, and I will contact you as soon as possible!

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