The main feature of this high-pressure ball valve is that it has a compact structure, good sealing performance and convenient maintenance. In particular, the sealing surface and spherical surface are often closed, not easy to be eroded by media, and easy to operate. They are more suitable for common media such as solvent, water, natural gas, and are also suitable for harsh working environments, such as special media such as heave, ethylene, methane, and so on. I don't know if you have noticed that the ball valve body can be either integral or combined. As for the valve body, it can be forged as a whole or three-stage, and the connection methods are also varied, such as welding, flange, and thread. 　　

Low load regulating butterfly valve is simple in structure, small in size and light in weight. It is generally used in places with high temperature and low working pressure. The design structure of low load regulating butterfly valve has a great relationship with the operating conditions, and the specific structure shall be determined according to the operating conditions. From the use analysis, as a regulating control valve, as far as the main sealing structure is concerned, no matter the vertical plate or inclined plate structure, the general valve body structure with sealing ring is better than the diameter sealing structure without sealing ring. For smelting conditions, flue gas temperature is high and dust content is large, so inclined plate plane sealing structure is easy to be selected. The plane vertical plate sealing structure with sealing ring structure for valve body can be selected when the relative temperature and dust content under refining and chemical acid making conditions are low. For refining equipment with strict sealing requirements and high temperature conditions, lever type plane sealing structure is selected. For the shaft end structure of low load regulating butterfly valve, the combination external support structure is more reasonable. The main reasons affecting the normal opening and closing of the low load regulating butterfly valve are the thermal blockage, pipe wall dust adhesion and pipe ash blockage caused by the temperature change of the low load regulating butterfly valve during operation.