The check valve ( 一个- - - - - - 阀) : according to its structure, can be divided into the lift check valve, swing check valve and butterfly valve. Lift check valve can be divided into vertical and horizontal two kinds. Swing check valves can be divided into single type, more than double disc type and disc type 3 kinds. Butterfly check valve for straight-through processing, the above several kinds of check valve in the connection form can be divided into the threaded connection, flange connections and welding of three. Below to show the following three simple forms of check valve, they have knowledge of all fields. 1 what are some of the characteristics of a swing check valve? Why is popular? Swing check valve is a common mechanical equipment petrochemical field, mastering the characteristics of this kind of equipment is helpful to better use of the equipment. So, exactly what is the distinguishing feature of swing check valve? Why can be popular? It is mainly the following these reasons. A, wide application range is widely applied in the field of petrochemical industry, not only it's in metallurgy, food, power, light industry and other industries have great application. Thus its use ability is very strong, for water, steam, oil, nitric acid, urea and other media have excellent adaptability. Second, compact structure, simple structure of swing check valve length is relatively short, compared with the traditional flange check valves, its size, weight and length were significantly lower. Because of simple structure is compact, so it is more simple and beautiful shape. Three, use very convenient swing check Industrial Valves is both horizontal and vertical pipes to be able to use, installation is very convenient and flexible, and flow channel unobstructed, resistance is relatively small, and the action is sensitive, excellent sealing. These advantages are traditional flange can't be matched by the check valve. So, it is because the swing check valve has so many advantages, it can be widely applied to all walks of life. Swing check valve products on the market is more, a variety of products brought difficulties to people's choices, and if there is demand, in the choose and buy when is suggested to consider their actual demand, there will be differences on different types of equipment performance, according to the use place and using demand to choose suitable products. Must notice the normal of the large manufacturers of choose and buy. 2 vertical check valve maintenance matters easily 'life-extension' vertical check Industrial Valves should be paid attention to in the process of using and maintenance, maintenance and maintenance of equipment is a big difference, to be able to use longer maintenance. So, in their daily use of how to maintain the vertical check valve? Might as well take the following methods. First, if the temperature difference is bigger, the pipeline length, which is used to place larger, it is best can install compensator, it can protect the pipeline joints, avoid pipe joint damage. Second, must be a professional operation when using, while the vertical check valve structure is very simple, use is more convenient, but if not a professional, had better not use blindly, so as to avoid improper use and influence on the performance of the final use, even it might damage the equipment. Third, if failed in use process, so be sure to timely repair or replacement, if continue to use the defective vertical check valve, then can bring bad influence to the production. Fourth, regularly check the status of vertical check valve and ensure that equipment in a good condition, such ability can let equipment work better. Fifth, must correct selection, vertical check valve type on the market is more, the various brands of various types of equipment, when choosing so must know oneself need is what kind of equipment, according to actual needs to choose the most suitable equipment. All in all, vertical check valve must be correct selection, at the same time pay attention to the daily maintenance. Such ability can prolong the service life of equipment, of course, to some degree, this also is the effective method to save operating costs for the enterprise. 3 wafer check valve knowledge popularization made sure the operation more easily the wafer check valve played an important role in daily work, it brings our life and work is a great convenience. Currently in use range is very wide, especially in the field of petrochemical industry and so on, but also has an irreplaceable position. When in use, the following several wafer check valve is everyone need to master knowledge, only to master well, can better operation. One, the characteristics of the wafer check valve opening and closing is very fast and convenient, the traditional common valve startup is more effort, and the operation is slow, the wafer check valves was able to overcome the defects, and brings convenience for the operation of the employees, to save the operation time, so very popular, widely use. 2, 1 daily storage and storage must be put in ventilated dry place, if long-term in outdoor, the sealing ring is easy to aging. 2, to stay away from oily substance when the deposit, otherwise will bring damage to equipment. 3, storage and to maintain the cleanness of the wafer check valve, keep clear of the channel, to do a good job of rust. Three, the structure of the wafer check valve structure is more compact, and its sealing system to ensure that equipment have good sealing, is not leak, use more safety and reliable. In a word, the wafer check Industrial Valves is a kind of excellent practical equipment, currently has gained a wide range of use, and continues to expand the scope of its use. If you want to use words, so it is important to note that the choose and buy the right equipment, at the same time want to operate in accordance with the relevant provisions, so as to ensure that equipment performance into full play.
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