Aseptic production process, the most commonly used cut-off valve is a diaphragm-type globe valve, usually referred to as diaphragm valves. The reason why the production process used in aseptic diaphragm valves, both because of its simple structure, second, it is cheap, which makes it so far is almost no "competitor." The only way to compete with the diaphragm valves is the so-called bellows globe valve, that is commonly referred to as bellows valves. This bellows globe valve because of its price is too high, despite a better technology than the advantages of diaphragm valves, but it is still very difficult to compete with diaphragm valves, such as described in this article.
PTFE bellows
In the sterile field of Process Industry, "bellows the competition between the valve and diaphragm valves," a long time. For a long time, diaphragm with its structure is simple, inexpensive, and cleaning and disinfection take an advantage of convenience. Compared with the diaphragm valves, bellows valves in the market, too few varieties and specifications. Today, Tuchenhagen production Vesta bellows valve is filled this gap, this paper, the diaphragm valves with bellows valves compared to the advantages and disadvantages of the two kinds of valve is more clear.
Empty Properties
When you need to use the diaphragm valves in horizontal piping, it must ensure that in accordance with the provisions of the angle of Diaphragm Valves manufacturer to install diaphragm valves in horizontal piping, or in the process equipment operation, diaphragm of the empty encounter some problems, can not be completely discharged valve in the media. However, different types of diaphragm valves, different manufacturers of diaphragm valves, diaphragm valves of different nominal flow of the installation of tilt angle is different, often to the design and manufacture of sterile process equipment has brought a lot of trouble. In the T-type structure, diaphragm valves, this is showing clear the valve of the more obvious.
Compared with the diaphragm valves, Vesta bellows valve is not such a problem, regardless of Vesta bellows valve body what kind of structure, form, in the process equipment, no-load run-time will not be a "dead", to ensure strict to cut off pipeline. Moreover, it can be installed in different ways according to aseptic process equipment installed in the piping system.
In the pharmaceutical manufacturing, aseptic process equipment by a number of horizontal pipe and vertical pipe composition, in the pharmaceutical equipment design, since the pipeline location and technical reasons, must be installed in a specific location using this bellows valves. For example, if a vertical pipe installed diaphragm valves, must be in the same horizontal plane by an 90 ° elbow connection. The T-structure of the production cost and high diaphragm valves, valve structures with different shape of the diaphragm valves, compared bellows valves in size and appearance, and installation of pipelines to connect an advantage. Because the structure of two types of cut-off valves of different types, so in the early stages of aseptic process equipment design, it should be a good choice should be used in various parts of the type of cut-off valve.
In medicine, food and biotechnology in the output device with a large number of valves required to be sterilized. The large valve, for example, Stericom series, in which situations required to be sterilized is almost useless. Because the equipment in these processes require less and less the quality of delivery of the IL, for less traffic, it is almost invariably chose the diaphragm valves. The new bellows valve has a smaller size, can be equipped with different pipe diameters used in this more competitive than the diaphragm valves. Wear-resistant electrode
Comparison of equipment utilization
As a device user, in the entire life cycle of the device as much as possible the use of equipment for production, that is: the utilization of equipment, as far as possible high. Maintenance of the equipment, said equipment must have to stop production, but also to invest certain amount of equipment maintenance costs. Bellows valves generally have wear and tear; in diaphragm valves, the valve once the wear and tear, after a certain amount of time must be replaced using the diaphragm, diaphragm depending on the life of the corresponding production process. On the one hand, process equipment flow of media corrosion, pipeline cleaning and disinfecting the temperature, process equipment, work pressure and flow, and other operating parameters will affect the membrane life; the other hand, diaphragm cut-off valve opening and closing when the membrane deformation also decided to divide the service life of important factors.
With a pneumatic drive unit bellows globe valve
Diaphragm Valves not because of damage to the majority of the production process used, on the contrary, because of mechanical compression damage. Although the diaphragm valves of the diaphragm have different levels of flexibility, there are different coatings, and different PTFE shield, but for all of the diaphragm valves are invisible from the outside of the wear and tear (caused by in-house media surface corrosion and particulate attachment) . Therefore, in order to avoid the production of sterile process of damage due to diaphragm valves forced to stop production, in practice, is usually the life of a specified period before the replacement of diaphragm. As a result, both the number of mandatory replacement diaphragm, or the resulting maintenance costs, or equipment downtime, than PTFE bellows valves is significantly more, while the bellows valves Another advantage is: almost can be used for the kinds of process production process.
Core components
Vesta bellows valve key component is the cut-off manufacturing TFM1705PTFE bellows, which in addition to corrosion resistance to various chemical media, in addition, TFM1705 materials also meet the FDA Code of Federal Regulations Article 21 of § 177.1550 on "perfluorocarbons resin" requirements. Its smooth surface (Ra ≤ 0.8mm), a reliable seal, the larger distance from the switching movement characteristics of these features for optimal CIP / SIP disinfection are very beneficial. More than three years, this patented technology, bellows valves successful foothold in the market, and aseptic processes in the pipeline will be strictly outside the pipes and pipelines cut themselves off from the atmospheric environment. ball valve Trunnion Mounted Ball Valve Floating Ball Valve Top Entry Ball Valve ball valve V Type Ball Valve
We can offer more Knife Gate Valve Information.If you need us according your spcification to produce the Knife Gate Valve .
Need, please e-mail to valve401@gmail.com
No comments:
Post a Comment