In the aseptic production process, the commonly used shut-off valve is a diaphragm type globe valve, usually referred to as a diaphragm valve. The reason why the diaphragm valve is used in the aseptic production process is because of its simple structure and the low price, which makes it almost no "competitor" so far. The only thing that can compete with diaphragm valves is the so-called bellows shut-off valve, commonly known as the bellows valve. Such a bellows shut-off valve, due to its high price, has a better technical advantage than a diaphragm valve, but it is still difficult to compete with a diaphragm valve, as described herein.
PTFE bellows <br> <br> "the competition between the bellows and the valve diaphragm valve" long in the sterile field of process industries. For a long time, diaphragm valves have taken advantage of their simple structure, low cost and convenient cleaning and disinfection. Compared to diaphragm valves, bellows valves are too few in the market. Today, the Vesta bellows valve produced by Tuchenhagen fills this gap. This article compares the advantages and disadvantages of the two valves by comparing the diaphragm valve with the bellows valve.
When you need to empty the performance <br> <br> in horizontal pipe when using diaphragm valves, diaphragm valves must ensure the installation angle in horizontal pipe in accordance with the provisions of the diaphragm valve manufacturer, or in the process equipment operation, diaphragm emptied encounter To some problems, the medium in the valve body cannot be completely discharged. However, the different diaphragm valve types, diaphragm valves produced by different manufacturers, and diaphragm valves of different nominal flow rates have different installation inclination angles, and often cause great troubles for the design and manufacture of aseptic process equipment. In the T-shaped diaphragm valve, the problem of emptying the valve body is more apparent.
Compared with the diaphragm valve, the Vesta bellows valve does not have such a problem. No matter what kind of structure the valve body of the Vesta bellows valve is, there will be no “dead angle†when the process equipment is running at no load, thus ensuring strictness. Ground the pipe. Moreover, it can be installed in the piping system of aseptic process equipment according to different installation methods.
In the pharmaceutical industry, aseptic process equipment consists of many horizontal and vertical pipes. In the design of pharmaceutical equipment, such bellows valves must be installed at specific locations due to pipe location and technical reasons. For example, if a diaphragm valve is installed in a vertical pipe, it must be connected via a 90° elbow in the same horizontal plane. The T-shaped diaphragm valve has a high production cost. Compared with the diaphragm valve with different valve body structure, the bellows valve has advantages in connection with the installation of the pipe in terms of volume and shape. Due to the different types of structure of the two types of shut-off valves, in the initial stage of the design of aseptic process equipment, it should be selected which type of shut-off valve should be used in each part.
Output devices in the fields of medicine, food and biotechnology have a large number of valves that require disinfection. Large valves, such as the Stericom series, have little use in this situation where disinfection is required. Because, in these process equipment, the amount of medium required to be transported is becoming less and less, and for less flow, the diaphragm valve is almost invariably selected. The new bellows valve has a smaller volume and can be used with different pipe diameters, which is superior to diaphragm valves in this respect.
Comparison of equipment utilization <br> <br> as a user of the device, over the life of the entire device as much as possible the use of equipment for production, that is to say: the utilization of equipment should be as high as possible. The maintenance of the equipment means that the equipment must be stopped, and a certain amount of equipment maintenance costs must be invested. Bellows valves generally have wear phenomena; in diaphragm valves, once the valve wears out, the diaphragm must be replaced after a certain period of use. The service life of the diaphragm depends on the corresponding production process. On the one hand, the corrosion of the circulating medium in the process equipment, the temperature during pipeline cleaning and disinfection, the working pressure of the process equipment and the flow parameters will affect the service life of the diaphragm; on the other hand, the deformation of the diaphragm when the diaphragm type shut-off valve is opened and closed It is also an important factor in determining the service life of the diaphragm.
Vesta bellows valve with the pneumatic drive <br> <br> most damaged diaphragm not because of the production process used, on the contrary, because of mechanical compression damage. Although diaphragms of diaphragm valves have different degrees of elasticity, different coatings, and different PTFE guards, all diaphragm valves have invisible wear from the outside (surface corrosion and particle adhesion caused by internal media) . Therefore, in order to prevent the aseptic process from being interrupted due to damage to the diaphragm valve, it is common practice to replace the diaphragm before the specified service life. In this way, whether it is the number of forced replacement diaphragms, or the resulting maintenance costs, or the downtime of the equipment, it is significantly more than the PTFE bellows valve, and another advantage of the bellows valve is that it can be used for almost Process production process.
The key component of the core part Vesta bellows valve is the cut-off bellows made of TFM1705PTFE. In addition to its resistance to various chemical media, TFM1705 material also meets FDA Federal Regulation 21 §177.1550 on “Perfluorocarbon resinâ€. "The request." Its smooth surface (Ra ≤ 0.8mm), reliable sealing, large switching distance and other characteristics are very beneficial for Zuijia's CIP/SIP disinfection cleaning. For more than three years, this patented bellows valve has successfully established itself on the market and can strictly isolate the inside of the pipeline from the atmospheric environment outside the pipeline in aseptic process piping.
PTFE bellows <br> <br> "the competition between the bellows and the valve diaphragm valve" long in the sterile field of process industries. For a long time, diaphragm valves have taken advantage of their simple structure, low cost and convenient cleaning and disinfection. Compared to diaphragm valves, bellows valves are too few in the market. Today, the Vesta bellows valve produced by Tuchenhagen fills this gap. This article compares the advantages and disadvantages of the two valves by comparing the diaphragm valve with the bellows valve.
When you need to empty the performance <br> <br> in horizontal pipe when using diaphragm valves, diaphragm valves must ensure the installation angle in horizontal pipe in accordance with the provisions of the diaphragm valve manufacturer, or in the process equipment operation, diaphragm emptied encounter To some problems, the medium in the valve body cannot be completely discharged. However, the different diaphragm valve types, diaphragm valves produced by different manufacturers, and diaphragm valves of different nominal flow rates have different installation inclination angles, and often cause great troubles for the design and manufacture of aseptic process equipment. In the T-shaped diaphragm valve, the problem of emptying the valve body is more apparent.
Compared with the diaphragm valve, the Vesta bellows valve does not have such a problem. No matter what kind of structure the valve body of the Vesta bellows valve is, there will be no “dead angle†when the process equipment is running at no load, thus ensuring strictness. Ground the pipe. Moreover, it can be installed in the piping system of aseptic process equipment according to different installation methods.
In the pharmaceutical industry, aseptic process equipment consists of many horizontal and vertical pipes. In the design of pharmaceutical equipment, such bellows valves must be installed at specific locations due to pipe location and technical reasons. For example, if a diaphragm valve is installed in a vertical pipe, it must be connected via a 90° elbow in the same horizontal plane. The T-shaped diaphragm valve has a high production cost. Compared with the diaphragm valve with different valve body structure, the bellows valve has advantages in connection with the installation of the pipe in terms of volume and shape. Due to the different types of structure of the two types of shut-off valves, in the initial stage of the design of aseptic process equipment, it should be selected which type of shut-off valve should be used in each part.
Output devices in the fields of medicine, food and biotechnology have a large number of valves that require disinfection. Large valves, such as the Stericom series, have little use in this situation where disinfection is required. Because, in these process equipment, the amount of medium required to be transported is becoming less and less, and for less flow, the diaphragm valve is almost invariably selected. The new bellows valve has a smaller volume and can be used with different pipe diameters, which is superior to diaphragm valves in this respect.
Comparison of equipment utilization <br> <br> as a user of the device, over the life of the entire device as much as possible the use of equipment for production, that is to say: the utilization of equipment should be as high as possible. The maintenance of the equipment means that the equipment must be stopped, and a certain amount of equipment maintenance costs must be invested. Bellows valves generally have wear phenomena; in diaphragm valves, once the valve wears out, the diaphragm must be replaced after a certain period of use. The service life of the diaphragm depends on the corresponding production process. On the one hand, the corrosion of the circulating medium in the process equipment, the temperature during pipeline cleaning and disinfection, the working pressure of the process equipment and the flow parameters will affect the service life of the diaphragm; on the other hand, the deformation of the diaphragm when the diaphragm type shut-off valve is opened and closed It is also an important factor in determining the service life of the diaphragm.
Vesta bellows valve with the pneumatic drive <br> <br> most damaged diaphragm not because of the production process used, on the contrary, because of mechanical compression damage. Although diaphragms of diaphragm valves have different degrees of elasticity, different coatings, and different PTFE guards, all diaphragm valves have invisible wear from the outside (surface corrosion and particle adhesion caused by internal media) . Therefore, in order to prevent the aseptic process from being interrupted due to damage to the diaphragm valve, it is common practice to replace the diaphragm before the specified service life. In this way, whether it is the number of forced replacement diaphragms, or the resulting maintenance costs, or the downtime of the equipment, it is significantly more than the PTFE bellows valve, and another advantage of the bellows valve is that it can be used for almost Process production process.
The key component of the core part Vesta bellows valve is the cut-off bellows made of TFM1705PTFE. In addition to its resistance to various chemical media, TFM1705 material also meets FDA Federal Regulation 21 §177.1550 on “Perfluorocarbon resinâ€. "The request." Its smooth surface (Ra ≤ 0.8mm), reliable sealing, large switching distance and other characteristics are very beneficial for Zuijia's CIP/SIP disinfection cleaning. For more than three years, this patented bellows valve has successfully established itself on the market and can strictly isolate the inside of the pipeline from the atmospheric environment outside the pipeline in aseptic process piping.
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