Comparisons were made on sterile equipment.
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Author:MedColor
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Published time: 1864 days ago
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In the aseptic industry, the competition between bellows valves and diaphragms has a long history.
In the aseptic industry, the competition between bellows valves and diaphragms has a long history. The diaphragm valve has the advantages of simple structure, low price and convenient sterilization. Compared with this kind of valve, bellows valve has too few specifications in the market. The advantages and disadvantages of two kinds of valve bag sterilization products are clearly introduced by comparing them.
The first is the nature of emptying. When diaphragm valves are used in horizontal pipes, it is necessary to ensure that installation is carried out in accordance with manufacturer's instructions. Otherwise, in the process of operation, there will be some problems in the emptying capacity, and the medium in the valve can not be completely discharged. However, different types of valves have different installation angles and inclination angles, which bring many problems to the design of sterile process equipment - bag sterilization and hot selling.
Especially for the T-type diaphragm valve, its emptying performance is more obvious. Compared with the above valves, bellows valves will never have such problems. No matter what structure the valve body adopts, no dead angle will appear when bellows valve works. Therefore, it ensures that the pipeline is severed strictly, and can be installed in the pipeline system with disinfection equipment according to different installation methods.
Secondly, the comparison of equipment availability. As users of devices, they should use them as much as possible. In general, bellows valve will wear out. For diaphragm valves, once worn out, they must be replaced. It is understood that its operation time depends on the relevant production process. On the one hand, the corrosion of flowing media, cleaning of pipelines, sterilization temperature, working pressure and many other factors will affect the use time. On the other hand, the deformation of the diaphragm can also determine the service time of the valve.
Third, durability. Most diaphragm valves will not be damaged during use. Instead, they are destroyed by mechanical compression. Although diaphragm valves have different levels of flexibility, different coatings and PTFE frame caps, all valves will still be worn by internal media. Therefore, it is necessary to replace valves frequently in the sterile process. However, bellows do not need to be replaced frequently and can be used in a variety of production processes.
