1. Definition of Electric Butterfly Valve An electric butterfly valve is a kind of valves used in industrial pipelines frequently. The butterfly valve is favored by its small size, less material consumption and light weight. Compared with other valves, the larger the caliber of a butterfly valve is, the more economical it becomes. It is quite easy to operate the electric actuator because it works by rotating a quarter turn slowly. Meanwhile, this kind of valve has great fluid control. When...
Electric Butterfly Valve Introduction Read
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1. How does a pneumatic butterfly valve work? Pneumatic butterfly valve uses the round disc to open and close, which can be designed to have the functions of regulation. In general, it serves as a block valve, but also enable have adjustment ability. At the moment, there are more and more butterfly valves used for pipelines with low pressure and medium large diameter. Pneumatic butterfly valve has advantages of simple structure, light weight, low cost. There was little fluid resistance,...
How Does A Pneumatic Butterfly Valve Work Read
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Three way ball valve has six characteristics as below: 1. Without friction. It completely solves the problem that the sealing performance of traditional valve will be affected due do the friction between sealing surface. 2. Top assembling structure. It can be directly checked and repaired in pipeline, which effectively reduces cost. Three way ball valve should be installed horizontally. 3. Single seat design. Eliminate the problem that unusually increasing medium pressure results in insecurity in...
Three Way Ball Valve has Six Structural Characteristics Read
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Ball valve is a kind of valves using the ball as closing part, which mainly consist of valve body, valve seat, valve ball, valve stem and handle (or other actuating device). Driven by the stem, the ball valve rotates around its axis. In the pipeline, it is mainly used to do cut off, distribute, and change the flow direction of medium. For there are many different kinds of ball valves, including different principle and medium as well as the application, the user should choose different types...
The Classification and Characteristics of Ball Valve Read
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Floating Ball Valve Generally, the sealing form of floating-structure ball valve is exit seal. After closing the valve ball, the valve ball under the effect of medium pressure moves a little toward the valve seat, making the valve seat produce elastic deformation and exert compaction effect on valve ball, thereby ensuring the sealing of valve. Greater medium pressure equals better valve sealing performance. (Provide that: the actual seating pressure is within the scope of the tolerance pressure...
What’s the Difference Between Floating & Trunnion Ball Valve? Read
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According to different structures, butterfly valve can be classified into concentric butterfly valve, single offset butterfly valve, double offset butterfly valve and triple offset butterfly valve. Structure and performance of concentric butterfly valve The concentric butterfly valve is featured by the same center position of the axis of stem, disc and ontology; simple structure and convenient manufacturing. Common lined butterfly valve belongs to this category. Defects are big resistance...
The Structure and Performance of Four Kinds of Butterfly Valves Read
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Function of extraction check valve is quite singular. However, extraction check valve is indispensable for turbine. Closing extraction check valve: when extraction check valve receives closing signal, air compressing three-way magnetic valve is opened. Compressed air connects with upper chamber of piston on extraction check valve. Depend on compressed air to overcome the functions of spring force and vapor pressure, making joy stick move downward, forcibly closing extraction check valve. Opening...
Structure of Extraction Check Valve Read
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Statistics show that leakage exists in about 20% of valves in industrial equipment. Caused direct economic loss accounts for about 50% of total losses. Meanwhile, valve leakage also causes pollution to environment. Use thermal infrared imager to detect valve leakage in case of industrial accident. Valve leakage is classified into external leakage and internal leakage. External leakage is commonly occurred in body, stem, connection part between packing and body. 1. The body is generally cast, which...
Use Thermal Infrared Imager to Detect Valve Leakage Read
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Low temperature devices are constantly developed in China. The demands for low temperature valves are also gradually growing. To meet the demands of market economy developing, the structure of metal seal butterfly valve is improved. A three eccentric pure metal seal butterfly valve having high performances is developed which cannot only be used for high temperature media, but also can be used for low temperature. With industrial technologies highly developing, stricter requirements for valve industry...
Reasons Cause Leakage of Metal Seal Butterfly Valve Read
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More and more factories adopt automation control. Manual operation is taken place of by mechanical or automated equipment. The actuator is required for not only playing as interface interaction for controlling mechanical motion of system and valve, but also enhancing security performance and environmental protection performance. In some dangerous occasions, automated actuator can reduce harms to personnel. Some special valves are requested to be opened or closed urgently under particular situations....
Electric Actuator Has Advantages Read
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