Top mounted pneumatic ball valve: SQ340F, SQ940F, SQ340H, SQ940H, SQ347H, SQ647H, SQ947H, DYQ340F, DYQ640F, DYQ940F;

Improve the overall quality of the industry. The plastic coated pneumatic butterfly valve industry focuses on talent support to improve the overall quality. During the "Twelfth Five Year Plan" period, the pneumatic butterfly valve industry of Tongfeng Baotou Plastic Co., Ltd. not only needs to introduce senior professional talents urgently needed by some industries and enterprises, but also needs to accelerate the cultivation of talents in short supply, cultivate a high-quality lock making staff team, and provide strong technical support for the continuous development of the pneumatic butterfly valve industry of Tongfeng Baotou Plastic Co., Ltd. Innovate marketing forms. The plastic coated pneumatic butterfly valve industry will take the brand as the link and innovate the marketing form. The plastic coated pneumatic butterfly valve industry takes brand enterprises as the link, innovates the form of marketing, and plays the role of traditional tangible markets, exclusive stores, franchise stores and various exhibition platforms; Apply modern network and information technology to vigorously develop the role of online sales and trading platform. During the "Twelfth Five Year Plan" period, Tongfeng pneumatic butterfly valve will establish a perfect cooperation supporting system to lengthen and improve the industrial chain. 6. Product parameters of plastic coated pneumatic butterfly valve. The data of the main parts of the plastic coated pneumatic butterfly valve are made of austenitic stainless steel, thus ensuring the excellent temperature resistance and corrosion resistance of the plastic coated pneumatic butterfly valve. The working temperature range of the plastic coated pneumatic butterfly valve is - 196-600 ℃. In the process of practical application, the corrosion resistance of the plastic coated pneumatic butterfly valve can be guaranteed by selecting the corresponding stainless steel brand according to the corrosivity of the pipeline medium. Scope of application of plastic coated pneumatic butterfly valve: flexible escort pipe is required to avoid vibration. It can be used in steam, gas, air, heavy oil, petroleum, chemical industry, etc. Refer to the corrosion resistance parameter table of hose material machine and the nominal diameter and pressure gauge of corrugated plastic coated pneumatic butterfly valve for detailed selection, Please refer to the correct application and installation method of plastic coated pneumatic butterfly valve and the optimal length of hose for settlement compensation. Five elements for selection of plastic coated pneumatic butterfly valve (stainless steel plastic coated pneumatic butterfly valve): 1. Size: nominal diameter of plastic coated pneumatic butterfly valve, joint type and size, and length of plastic coated pneumatic butterfly valve. 2. The practical working pressure of pressure coated pneumatic butterfly valve is the nominal pressure PN/working pressure P. 3. The chemical properties of the medium recommended in the plastic coated pneumatic butterfly valve shall be determined according to the corrosion resistance table to determine the material of each part of the plastic coated pneumatic butterfly valve. 4. The working temperature and range of the medium in the temperature coated pneumatic butterfly valve; Ambient temperature of plastic coated pneumatic butterfly valve during operation. In case of high temperature, the maximum allowable pressure under the working temperature must be confirmed according to the temperature correction coefficient to ensure the correct pressure level is selected. 5. The status is based on the status of the plastic coated pneumatic butterfly valve when it is used, referring to the correct installation mode of the plastic coated pneumatic butterfly valve, the length calculation of various movement states of the plastic coated pneumatic butterfly valve, the minimum bending radius of the plastic coated pneumatic butterfly valve and other elements. The parameters correctly select the length of the plastic coated pneumatic butterfly valve and install it correctly. 7. Application method of plastic coated pneumatic butterfly valve. Plastic coated pneumatic butterfly valve is mainly used for cable maintenance in consumption and processing. When using, first put the cable and wire into the pipe, and then match the corresponding model of the connector.
Reasons for corrosion of pneumatic butterfly valve and treatment methods. The metal and oxygen in the atmosphere react to form an oxide film on the surface. The iron oxide formed on ordinary carbon steel continues to stop oxidation, so that the corrosion will expand from time to time and eventually form holes. It is possible to apply paint or oxidation resistant metals (such as zinc, nickel and chromium) to stop electroplating to ensure the appearance of carbon steel, but, as people know, this maintenance is just a film. If the maintenance layer is destroyed, the steel below will begin to rust. The corrosion resistance of pneumatic butterfly valve depends on the chromium content. When the chromium content reaches 10.5%, the atmospheric corrosion resistance of steel increases significantly, but when the chromium content is higher, although the corrosion resistance can still be improved, it is not obvious. The reason is that when the steel is alloyed with chromium, the type of external oxide is changed to be similar to the external oxide formed on pure chromium metal. This tightly adhered chromium rich oxide maintains the appearance and avoids further oxidation. This kind of oxide layer is extremely thin, through which you can see the natural luster of the stainless steel surface, so that stainless steel has a common appearance. Moreover, if the surface layer is damaged, the exposed steel surface will stop self repairing with the atmospheric reaction, and form this "passivation film" again to continue to play a maintenance role. Pneumatic butterfly valve is widely used because it can reduce the number of pipeline devices. Pneumatic butterfly valve is a pipe fitting that uses the central element of bellows to deliver various fluids. It mainly plays a compensation role in the connection between pipelines, pipelines and equipment, equipment and equipment. At present, pneumatic butterfly valve has been widely used in many complex pipeline systems, Pneumatic butterfly valve can reduce the stress of pipeline device, which is an important factor for its popularity. In a complex pipeline system, due to the limitation of space and position conditions, there are various difficulties in the operation of the device. The formed pipe cannot be installed, bent, and straightened. The installed pipe will not be able to prevent cold correction. According to the pipe diameter and the detailed situation on site, the cold correction amount ranges from several millimeters to tens of millimeters, some hundreds of millimeters. Theoretically, the greater the amount, the higher the internal stress. These residual device stresses in the pipeline system are undoubtedly a great hidden danger. Since the pneumatic butterfly valve can be bent at will and the internal stress generated by bending under the condition of rated bending radius is very small, it can bring great convenience to the operation of the device and play a role in the safe operation of the pipeline system. This is the main reason why some pipeline systems must use pneumatic butterfly valves. In addition, the importance of the pneumatic butterfly valve is also related to its outstanding performance. The pneumatic butterfly valve has good flexibility, temperature resistance, pressure resistance and corrosion resistance, and plays an important role in the movement of the pipe system, absorption of heat shrinkable joints and vibration absorption.
What are the fundamental principles and characteristics of the rotary compensator? The application of rotary compensator and rotary compensator products relies on the flexible packing in the packing chamber to stop sealing. During the application of the product, the packing will wear a little every time it rotates. When the wear reaches the corresponding value, the product will show leakage. The maintenance free rotary compensator adds a set of springs above the packing compression flange. When the packing shows slight wear, it will be compensated by the tension of the compression spring, and then extend the product leakage time (the leakage time is delayed by 3-5 years). When the wear amount exceeds the spring tension compensation amount, just tighten the nut above the spring compression flange. There is no need to stop gas, no limit on the number of times of work, and no leakage is easy to occur, and then greatly improve the social and economic benefits of gas supply units and gas users. This product can compensate for 5000 times without leakage under the pressure of 4.0Mpa, and has excellent sealing effect. Characteristics: The sealing packing of rotary compensator adopts the most advanced packing in China at present, which has a temperature resistance of - 60 ℃ - 800 ℃. Since there is a retaining ring welded on the outside of the inner sleeve and the inside of the outer sleeve of the compensator, a ball (tumbling ring) is installed between the two retaining rings to reduce friction, which reduces the wear of the inner sleeve on the sealing packing. And because the natural tension of multiple groups of springs on the compensator equipment pushes and presses the packing gland flange, so that the sealing packing with extremely slight wear is in a compact state, and then the liquid or gas medium in the pipeline will not leak. When the packing wear is large, the spring tension cannot meet the adjustment, External force can be used to compress and stop the adjustment of the spring, and then reach the requested sealing function without stopping the work. Therefore, this product overcomes the shortage of other similar products. When the packing is worn, the original rotary and sleeve compensators cannot be compensated and adjusted in time, which causes the sealing function of the compensator to decline until leakage occurs, In addition, if the packing wear is large, the product must be removed from the pipeline to turn over the filler, which affects the work of the pipeline and the normal production of users.
How will the pneumatic butterfly valve change during operation. With the rapid development of pneumatic butterfly valve industry. The pneumatic butterfly valve was found after every earthquake abroad that in the earthquake, the storage tank and the pipeline connected to it had a positive displacement, and then a large stress occurred, so that the pipeline and the connected equipment, pipe fittings, fixed supports, etc. were subjected to excessive force and torque. In severe cases, the tank body could be damaged, and the leakage of storage fluid could occur. In order to add stress and overcome the destruction of the above methods, the pipeline must be carefully planned to have satisfactory flexibility. The pneumatic butterfly valve has satisfactory flexibility. It can drop the stress in the pipeline, add the thrust of the pipeline on the tank and support, and then maintain the tank. 1. If the steel is assumed to be a temporary cold and hot exchange task, then under the thermal stress effect caused by the temperature difference change outside the data, large cracks will occur and expand from time to time, beginning to lead to unity. Therefore, the thermal exhaustion function of steel should be considered for the structure and pipeline under the condition of temperature bump change. 2. Under the effect of low temperature, the cementite in carbon steel will migrate and converge due to the energy obtained, form the cementite with coarse grains and mix it with ferrite, and its cementite will gradually change from lamellar to spherical, which is called spheroidization. Because the strength of graphite is extremely low, and it is presented in sheet form, the strength of data is greatly reduced, and brittleness is added, which is called graphitization of data. The carbon steel will be graphitized in the environment above 425 ℃ for the time being, which is more obvious when the temperature is higher than 475 ℃. The maximum operating temperature of SH3059 regular carbon steel is 425 ℃, and the maximum operating temperature of GB150 regular carbon steel is 450 ℃.