At present our country’s valve industry is widely used the metal valve. As we all know, the metal valve was used for hundreds of years, which had also went through the improvement of structure and material. However, because the constraints of metal material itself the metal valve became more and more weak to high strong abrasion, corrosion and other abominable condition. The needs of the poor working conditions need the new kind of valve. Under this circumstance, the ceramic lined valve was created by the scientists, for instance, the short service life and serious leakage which will seriously affect the stability of the system operation. So the traditional metal valve need the changing from material, design and manufacturing process. This is the reason why the ceramic tube and ceramic lined valve was created.

The Advanced ceramic materials are the new material in the 21st century, which has been paid attention by an increasing number of scientific workers. And the application of ceramic lined valve in industry is a bold and useful innovation. The ceramic material has the small deformation and has a much higher bonding strength than the metal. These properties determine the ceramic material has the higher tensile strength, compressive strength, elastic modulus and hardness. Ceramic itself is very difficult to processed, however, it is the limitation for the scope of its application. In recent years, due to the development and progress of martensitic phase transformation, toughening technology, composite material science and technology of the concept of nano ceramics has brought the great improvement of the brittleness of ceramics. The toughness and strength of the ceramic lined valve has been increased greatly and then is has expanded the application range of ceramic lined valve.