It is reported that recently, it was learned from Changsha gas transmission branch of west east gas transmission of national pipe network that the company successfully completed the task of ensuring the supply of natural gas in Hunan Province in winter, and transported 1.625 billion cubic meters of natural gas to Hunan Province, a year-on- year increase of 9.26%. Changsha gas transmission branch of West to east gas transmission of national pipeline network has transported 1.625 billion cubic meters of natural gas to Hunan Province, a year-on-year increase of 9.26%. Changsha gas transmission branch takes safety production as the foundation, emergency response as the starting point and market development as the driving force to build a solid gas barrier for the rapid It is reported that recently, the first batch of 12 affordable wind power and photovoltaic project connection projects of Inner Mongolia Power Group have been approved, involving 12 photovoltaic wind power projects of more than 10 new energy investment enterprises such as Guodian, Huadian, China Resources and Mingyang, with a total installed capacity of 2.3 million KW, distributed in Ulanqab, Erdos, Bayannur, Wuhai, Alxa and other regions. According to the objectives of "two pioneers" and "two surpasses" clearly put forward in the report of the 11th Party Congress of Inner Mongolia Autonomous Region, Inner Mongolia electric power group gave full play to the advantages of power grid resource allocation, went all out and made active deployment, formulated a new energy grid The port is the window of foreign trade, and oil and gas trading is one of its most important businesses. The report of the 19th National Congress of the Communist Party of China proposed to "give greater reform autonomy to the free trade pilot zone and explore the construction of free trade ports", and domestic ports, large and small, responded one after another. Zhoushan Port, Tianjin Port and Huizhou Port, as coastal oil ports in the Yangtze River Delta Economic Circle, the Bohai Economic Circle and the Pearl River Delta Economic Circle, play the leading role of the Shanghai Futures Exchange in the oil and gas trade and financial market, and lead the surrounding ports to continuously explore suitable ports for themselves. The oil and gas development path has made the domestic port oi At present, green and low carbon has become the consensus of the mainstream society in the world. The Chinese government has committed to strive to achieve carbon peaking by 2030 and carbon neutrality by 2060. To this end, while vigorously developing non-fossil energy, "removing coal and reducing oil" and gradually reducing the share and quantity of natural gas in energy consumption have become the main theme of the future development of the energy sector. In the context of "dual carbon", the concept of "green finance" is heating up. Some people propose to significantly reduce investment in fossil energy and require financial institutions to stop providing loans for it. The argument that oil and gas is a "sunset industry" has resurfaced. But the completion of the energy tran Water conservancy projects are not only important basic projects, but also important livelihood projects. In the construction of various water conservancy projects, the pressure reducing valve is naturally inseparable. The pressure reducing valve plays an important role in the construction of water pipelines, hydroelectric gates and water pump projects. In the construction of water conservancy projects, if the performance of the pressure reducing valve is not ideal, it may affect the normal delivery and use of the water conservancy project. To create high-standard water conservancy projects, high-quality pressure reducing valves must be guaranteed. The pressure reducing valve is a valve that reduces the inlet pressure to a certain required outlet pressure through adjus Now our country’s environmental problems are very serious, causing great harm to our lives and production. Government departments have been vigorously rectifying, and constantly promulgating various policies for governance. Under this severe situation, the environmental protection valve industry has also developed very well. Urban sewage treatment equipment has greatly promoted the production and sales of environmentally friendly valves. The water pollution in our country is very serious. Both the ground and groundwater are very polluted. my country's sewage treatment technology is still relatively rudimentary, and the pollution level is far greater than the sewage treatment effect. Now we have realized the seriousness of environmental pollution. The treatment of domestic sewage a It is reported that recently, the LNG filling station and LNG container terminal project of Anhui Wuhu Yangtze River LNG inland receiving (transfer) station project, which is generally contracted by CCCC Second Harbor Institute and participated by CCCC Second Harbor Bureau, has been completed and put into operation. The project is located in gao'anwei operation area of Sanshan Port Area, Wuhu City. The main construction contents include the construction of a new 5000 ton LNG filling berth, a 10000 ton LNG container berth, rear tank yard and corresponding supporting facilities. The project is the first inland LNG project in China, which opens up a new idea for the development of clean energy industry in inland ports. It is of great significance to promote the constr In the rubber and plastic industry, as one of the most representative rubbers with excellent comprehensive properties such as oil resistance, physical and mechanical properties and chemical resistance, nitrile rubber is widely used in the manufacture of various oil resistant rubber products, a variety of oil resistant gaskets, gaskets, sleeves, flexible packaging, flexible hoses, printing and dyeing rubber rollers, cable rubber materials, etc. this special synthetic rubber is widely used in automobile, aviation, petroleum It has become an essential elastic material in industries such as copying. In 2019, the consumption of nitrile rubber in automobile and transportation industry is prominent, accounting for more than 50%. China is a large consumption area of nitrile ru "The level of electrification is an important symbol of the progress of modern civilization and an inevitable choice to achieve the goal of 'double carbon'." on November 19, it was said at the China electrification development high-end forum hosted by China Electricity Council and hosted by China Electricity Development Research Institute. At the meeting, China electrification annual development report 2021 (hereinafter referred to as the report) was released. The report proposes that China's electrification process will advance steadily during the 14th Five Year Plan period, and will remain in the middle and advanced stage of electrification by 2030. The development of electrification will strongly support the realization of carbon peak. By 2060, China's electrification process w It is reported that recently, Qingdao hydrogen energy resource base project, a large hydrogen fuel cell hydrogen supply project in Shandong Province undertaken by Qingdao refining and chemical company affiliated to Sinopec, was completed. The project has an annual hydrogen production capacity of 2250 tons and is expected to be put into operation by the end of December this year. After putting into operation, it will completely solve the problem of hydrogen source for fuel cells in Qingdao, effectively improve the hydrogen production and supply capacity of Shandong Province, promote the rapid development of hydrogen energy industry in Shandong, and help build "Oriental hydrogen island". Qingdao hydrogen energy resource base project is a major demonstration pilot project of hydrogen The safety of oil storage and transportation has always become an important topic in the oil industry. In order to ensure the safety of oil storage and transportation, oil workers not only need to operate in strict accordance with relevant specifications, but also need to promote the continuous upgrading of storage and transportation tools to ensure safer oil storage and transportation. Oil pump is one of the important tools for oil storage and transportation. High performance and high quality oil pump escorts the safe storage and transportation of oil. The high-quality oil pump moves towards high-end and quality to escort the safe storage and transportation of oil. 1、Take scientific research as the core The performance of oil pump is related to the safety of storage and tr Social development is inseparable from the economic construction of basic industries. Over the past 40 years of reform and opening up, China's industrial production level has been significantly improved, and the market has formed a virtuous cycle mechanism. Especially for industrial products such as valves, the market is optimistic. The sales of products such as regulating valves have increased sharply, and the product technology has been improved more and more. The tightness of the regulating valve directly affects the performance and service life of the product, especially for some key industrial and mining enterprises. In addition to the debate, the international community is more important to support China's development. Especially since the epidemic, considering the actual di As my country's industrial development continues to deepen, the requirements for automation of electrical equipment in industrial production are getting higher and higher. The stable and long-term development of enterprises is inseparable from the support of advanced electrical automation instruments and automation control technology. The scale of industrial production continues to expand. The development of industrial electrical automation instrumentation is stable. The working principle of industrial automation instruments is to use intelligent methods to collect and monitor the information in the production process, which can help the production work to be completed more accurately. Inspection in the production process is a very important link for industrial production, and ind    With the higher and higher degree of social and economic development, people have higher and higher requirements for the construction of ecological civilization. It is people's common expectation to realize the green development of all walks of life. If the production equipment is backward and the product R & D ability is weak, it is obviously unrealistic to achieve the goal of green development. In the process of chemical industry development, it is natural to be inseparable from various valves. Traditional metal valves are more obvious in the process of use, that is, poor corrosion resistance, poor durability and prone to "running and dripping" and other problems. These shortcomings not only affect the continuity of chemical equipment work, but also may have an i Recently, it was learned from the national pipe network group that the Zhangjiakou branch project of Shaanxi Beijing line 4 natural gas pipeline started construction on the 10th. After completion, the gas supply can cover all winter Olympic venues in Zhangjiakou. The total length of the project is 173.7 km, which is composed of 6 branch lines, 11 off load stations are set along the line, the designed annual gas transmission is 3.2 billion m3, and the total investment is 1.26 billion yuan. After the completion of the project, nearly 9 million cubic meters of natural gas can be transported to Zhangjiakou every day, benefiting about 220000 families in Zhangjiakou and realizing the "county to county connection" of natural gas in Zhangjiakou. The relevant person in charge As an important part of my country's manufacturing industry, the instrument and meter manufacturing industry has played an important role in promoting the country's economic growth and social development. With the continuous development of social economy and technology, my country's instrumentation industry has been advancing all the way in recent years. How much do you know about instrumentation! Instruments and meters are appliances or equipment used to detect, measure, observe, and calculate various physical quantities, material components, and physical parameters. Vacuum leak detectors, pressure gauges, length gauges, microscopes, multipliers, etc. are all instruments and meters. In detail, instruments and meters have functions such as automatic control, alarm, sig The automatic adjustment system of the industrial production process is generally composed of a detector, a regulating valve, an actuator and an adjustment object, and the actuator is an indispensable and important part of it. As the terminal product in the industrial process control system, it plays an irreplaceable role for other products in the automatic control system. From the perspective of the industry, the development speed of the implementation of electric control valves in my country lags behind other control instruments. However, this phenomenon is being changed. Not long ago, China Machinery Industry Federation and China General Machinery Industry Association held a product appraisal of "Hydraulic Actuator for Tank Root Valve and Electro-hydraulic Actu The green development of industry needs innovation. Without innovation, the industry will not progress, and the goal of enterprise development will be difficult to achieve. Green development is not only the need of ecological civilization construction, but also the need of China's development in the new era. The high-quality development of social economy and the improvement of the quality of people's living environment must depend on the industrial progress. If the industrial production mode is relatively backward, such as the problem of dripping and running in the production process, it will produce relatively serious pollution problems, and the development goals of clean production and green industry can not be achieved. In the pharmaceutical industry, if the performance of the Because the tank wall manhole is located in the lower part of the oil tank, the manhole bears a lot of liquid pressure. In order to prevent leakage, the installation quality of the manhole must be strictly required. The flanges and cover plates are processed with sealing water lines, and care should be taken to protect them during construction to avoid oil leakage during use. Make a mark every time the manhole is removed, so as to avoid dislocation during reinstallation and affect the tightness. When installing the nuts on the manhole cover, apply force evenly in pairs to prevent oil leakage caused by deformation of the cover or uneven force. The tank wall manhole is installed in the lower part of the storage tank, and is mainly used for the staff to enter and exit the storage tan It is reported that the 2021 China International Fluid Machinery Exhibition, which is highly anticipated by the industry, has successfully closed in Shanghai Hongqiao National Convention and Exhibition Center. In his speech, oriole, President of China General Machinery Industry Association, said that the International Fluid Machinery Exhibition has witnessed the rapid development of China's fluid machinery industry in the past 20 years, promoted technical exchanges and cooperation among the fluid machinery industries, and made important contributions to the communication of market information and the advancement of Chinese fluid machinery technology. This exhibition is held in the 100th anniversary of the founding of the Communist Party of China and the opening year of the It is reported that on the afternoon of May 15th, the 2021 Fifth China (Zibo) Chemical Technology Expo was successfully concluded at Zibo International Convention and Exhibition Center. Professional audiences, experts, and media from all over the country gathered in Zibo to witness the huge development opportunities under the "double cycle" pattern. Under the background of "double cycle", the demand for insight into new technologies, new industries and new business forms has soared. The fifth China (Zibo) Chemical Technology Expo in 2021 restarts the engine of scale growth and establishes it as China's leading chemical technology exhibition and exchange The status of the platform: This exhibition has a total of 617 exhibitors with an exhibition area of 55,000 square meter It is reported that on May 11, Han Jianyu, head of Sinopec’s anti-surge valve localization research team, led experts from Sinopec’s equipment department, Maoming branch, Guangzhou branch, SEI and Guangzhou Engineering Company to work on the localization of anti-surge valves. In-depth research on Newtok Fluid Control Co., Ltd. ("Newtok" for short). Participants in the survey also included experts from Shenyang Blower Group Co., Ltd. ("Shengu Group").     The expert team went to the Newtok production site to understand the development of anti-surge valves, and visited the product exhibition hall, production testing equipment and oxygen valve workshop. Newtok reported to the expert group the relevant situation of anti-surge valve localization: including t On May 2, the drilling of Well 1-29QKP1 in Nanpu 1-29QKP1, located on the artificial island of Nanpu 1-2 in Jidong Oilfield, was launched, announcing that the construction of the first offshore gas storage group in my country has begun the construction of new wells. The Nanpu 1-29QKP1 well is deployed in the high part of the 109 fault block of 1-29 gas storage in the No. 1 structure of Jidongnanpu Oilfield. It is the first new well constructed in the gas storage of Jidong Oilfield. At the same time, Nanpu 1-29 gas storage The warehouse is also the first domestic offshore gas storage. As the pilot test well for the construction of Nanpu 1-29 gas storage, the well is responsible for the protection of low-pressure and easy-to-leak formations in the construction of offshore gas Recently, the 22nd China Environment Expo 2021 (hereinafter referred to as "China Environment Expo") was held at the Shanghai New International Expo Center. The China Environment Expo started in 2000. With more than 20 years of industry experience in the Chinese market and the global resources of the parent exhibition IFAT in Munich, it has grown into an important professional exhibition and exchange platform for the global ecological environment governance industry. Olympus attended this industry event as an exhibitor. During the exhibition, Olympus exhibited "Vanta Handheld XRF Analyzer" and "Terra II Portable XRD Analyzer", sharing advanced experience in soil detection analysis and solid waste recycling with many companies, fully demonstrating Olympus High-quality competitivene In recent years, throughout the valve industry, many valve research and development areas still have many deficiencies and shortcomings, and master the core technology of the valve to promote the high-quality development of China's economy, improve the comprehensive strength of the country has a very important significance. How to improve the core technology innovation ability of China's industrial products and firmly grasp the initiative of science and technology development in their own hands is a subject and challenge faced by every plus enterprise and every technology research and development personnel. To be sure, some companies have achieved success on the road to innovation and research. It has its own set of complete system on technology. The first is to increase the alloc Renewable energy is a natural green energy that does not emit pollutants or greenhouse gases. Its rapid development has laid a solid foundation for the construction of ecological civilization.The 14th Five-Year Plan is a critical and critical period for the transformation to low-carbon energy. We will push forward the steady realization of the carbon peak and carbon neutral targets, and the "staying power" of the development of renewable energy should not be slurred. Fast-growing renewable energy is becoming a major force in China's drive to reach a carbon peak and be carbon neutral.At a recent press conference held by the State Council Information Office, a person in charge of the National Energy Administration said that China's renewable energy development and utilization scale The consensus in the industry is that the market environment has indeed changed profoundly.The industry generally believes that due to the increasingly saturated urban sewage, the future of China's sewage treatment in the main battlefield in the countryside.For the rural sewage treatment market, urbanization will drive the construction of a number of thousand-ton scale sewage treatment plants.Even considering the factors of rural population reduction caused by the increase of urbanization rate, the construction and operation of rural sewage treatment facilities in China can still reach the level of one trillion.According to the estimation of E20 Research Institute, the market space of rural sewage treatment is estimated to be 120 billion yuan after the "13th Five-Year" p Under the goal of achieving carbon peak before 2030 and carbon neutral before 2060, how to promote the construction of the national carbon emission rights trading market (referred to as the "national carbon market") in the opening year of the 14th Five-Year Plan and complete the related targets of carbon emission reduction on schedule has become a hot topic in this year's NPC and CPPCC. The Ministry of Ecology and Environment has announced that the construction of a national carbon market has reached the most critical stage to ensure that online trading will start before the end of June this year.The representative members suggested speeding up the construction of the national carbon market system, optimizing the carbon trading mechanism, and promoting the hierarchical development As the control part of the fluid conveying system, the valve has the functions of cut-off, regulation, flow diversion, countercurrent prevention, diversion and pressure relief. There are many kinds and various specifications.With the continuous development of valve technology, the application field of valves is also expanding, and the demand for high-end valves is expanding, which is not only a period of innovation and development in the valve industry, but also a period to meet the challenges. China's valve manufacturing industry after years of development, in the valve production and technology research and development, has made great progress, some enterprises and products have made good achievements, but the development and production capacity of high-end valve product In recent years, with the large-scale development and utilization of natural gas resources in China, the consumption of natural gas has increased greatly in the fields of power generation, civil use, transportation and chemical industry.In addition, countries attach more importance to the green and low-carbon economy, the development of natural gas has jumped to a new level. Natural Gas Industry 'resilient' in 2020 "The term 'resilient' can be used to describe the gas industry in 2020.Even if encounter COVID - 19 outbreak this year, oil prices plunged, clean heating policy shift, and many other "black swans" or adverse effect, in other industries to present type down the precipice, the natural gas market demand still maintain a certain growth rate, shows that the natural g Recently, the market supervision administration website announcement, to further standardize the approval of special equipment inspection institutions work, promote reform of special equipment inspection and special equipment administrative license reform, market supervision administration organization drafted the "special equipment inspection institutions approved rules (draft)" (see annex), is to solicit opinions from the public, the deadline for feedback on December 15, 2020. In order to further standardize the approval work of special equipment inspection institutions, promote the reform of special equipment inspection work and the reform of special equipment administrative license, the Bureau has organized the drafting of the "Rules for Approval of Special Equipmen "Master Huang, your special tool for air valve is so easy to use. I am replacing a valve plate and buffer plate now. It only takes 5 minutes." On November 12th, after replacing the valve plate and buffer plate of a gas valve of no. 4 compressor, Ma Huomin, a staff member in the first station of the oil and gas transportation and Marketing Department of the northwest oil field, said excitedly to The stationmaster Gold. "I'm glad you're doing your work more efficiently."Gold stroked the new tool as if it were her own child.Not long ago, they struggled to replace the compressor valves and buffers. It turned out that when replacing the compressor valve plate and buffer plate, the air valve needed to be fixed on the bench vise, and it took two people an hour to take the According to announcement No. 15 of 2020 issued by Ministry of Industry and Information Technology of the People's Republic of China, Ministry of Industry and Information Technology of the People's Republic of China approved and published a batch of industry standards, among which 18 standards centralized by National Technical Committee for Standardization of Valves and National Technical Committee for Standardization of Safety Pressure Relief Devices are hereby published, as shown in the following table: No Standard number Standard name Under centralized unit   1 JB/T 13769-2020 Water hammer relief valve National Technical Committee for Standa China's valve industry first draft new international standards ISO 22153:2020 "the general requirements of industrial valve electric actuator has officially promulgated, the standard shall be presided over by Chinese hefei general machinery research institute co., LTD, and revising my county unit also participate in the standard formulation work, this also is the 2019 world youth will always fine pump valve industry technology since the series of activities to carry out docking, realize own my county pump valve industry transformation and upgrading, promote scientific and technological innovation ability, heighten the advantage of" made in zhejiang "always fine another achievement. Boost the transformation and development of pump and valve industry At the 2019 world youth w On September 28, China Power Investment Corporation announced the landmark achievement of China's third-generation nuclear independence -- China's independent nuclear power technology brand and the world's advanced third-generation nuclear power model "Guohe No.1" in Shanghai. A year ago in September 2019, the State Council Information Office of China's first white paper on nuclear safety - white paper points out that China's nuclear safety, formed a complete system of nuclear industry, China's nuclear cause for energy security, protect the ecological environment, improving people's living standards, promote economic made important contributions to the development of high quality are also out of a nuclear safety road with Chinese characteristics. Third and fourth generatio Domestic VS imported valve, how will you choose?As the saying goes, "the moon is bright at home," but now more and more people admire foreign imports.In the industrial sector, the trend is slowly spreading.Just say a common valve, same material, same function, the price of imported goods can be multiplied several times.Imported valve products in the price set their own unique style, but even if expensive, people still flock to. Is the inlet valve really that good?Where is the gap between domestic valve and imported valve?How can we close these gaps? The term "imported goods" refers to the products that are imported in their original packaging. From research and development to production, they are entirely in the place of origin of foreign countries, and foreign standards are The National Energy Administration recently issued the guidelines for Energy Work in 2020 (hereinafter referred to as the Guidelines).The Opinions emphasized that multiple measures should be taken simultaneously to enhance the capacity of oil and gas security.Among them, "increase oil and gas exploration and development efforts" is listed as the first task."Why the emphasis on oil and gas exploration when oil prices are so low and you can buy oil abroad?"In the face of public doubts, Jin Zhijun, director of the State Key Laboratory of Shale Oil and Gas Enrichment and Effective Exploitation and an academician of the Chinese Academy of Sciences, told China Science Daily that oil and gas, like food and water, have become human necessities and strategic materials related to national securit Fluorine plastic anticorrosive valve in the petroleum, chemical industry, medicine, metallurgy, electric power industries in contact with acid and alkali of strong corrosive medium, such as device has been widely used, but on how to choose good, with good lining fluorine plastic valves, according to our customers for many years field application experience, transform fluorine plastic anti-corrosion valve selection to medium temperature, pressure, pressure used several conditions following note rubber lining valves: Temperature of medium used for fluorine-lined plastic valves Lined with fluorine plastic valve, the use of fluorine plastic is F46(FEP), the use of the medium temperature can not exceed 150℃(medium temperature short time to 150℃, long time use temperature Since the air is compressible, the stability of the pneumatic transmission system is poor, which has a great impact on the accuracy of position control and speed control. Therefore, the positioning signal of the pneumatic actuator usually produces an execution error with a resolution of about 3~5%. This leads to inaccurate valve positioning correction, the valve should be closed but not closed, and at the same time, it cannot be positioned due to the execution error caused by the resolution, so that the position feedback of the positioner continuously corrects the position, and the entire control loop swings and oscillates or loses control. In addition, because the working medium air itself has no lubricity, an oil lubricating device must be installed in the air circuit. Compared In industries that require temperature, high and low temperature cycle temperature control system equipment has been widely used, which can realize two functions of heating and cooling. During cooling and heating, the temperature change in the thermostat can be realized by the circulation of the fluid medium (refrigerant), so as to achieve the temperature required by the process. 1. What is the function of the valve of the high and low temperature cycle temperature control system? 1.1. The valve is used to control the flow and direction of the refrigerant. Valves are required for closing and starting. Valves should be installed where they can be easily removed and serviced. Set up various valves, pay attention to the direction of refrigerant flow, a As the name suggests, a cryogenic valve is a valve that can work in cryogenic low temperature conditions. To demarcate its working temperature, a valve with a working temperature lower than -40 °C is usually called a cryogenic valve, which is mainly used for gas liquefaction, Separation, transportation and storage equipment, the operating temperature can reach below -270 ℃, there are gate valve, globe valve, check valve, ball valve, butterfly valve and throttle valve and other types. In recent years, the use of ultra-low temperature valves has become more and more extensive, and it is one of the indispensable and important equipment in petrochemical, air separation, natural gas and other industries. , and the permeability is strong, so it determines many special requir Bellows gate valves are widely used in petrochemical industry, metallurgical industry, etc. A valve can be widely used in many fields and must have its own advantages. So what are the advantages and characteristics of bellows gate valves? Feature 1: Strong durability. During the research and development process of the bellows gate valve, attention is paid to optimizing the selection of materials, so that the bellows gate valve has strong durability and supports the long-term production of enterprises. Feature two: good performance. The bellows gate valve has good performance of high temperature resistance and low temperature resistance, so it can be used in areas with relatively large annual temperature difference; the bellows gate valve has good corrosion resistance, which Stainless steel gate valve has great value in current industrial applications, so its application value is shown by the pen skin? First of all, it can transport a variety of different media, and in the current industrial age, the entire production or life process is inseparable from transportation, and it is necessary to use it when transporting. gate. For example, medium in industries such as water, air, steam, etc. is transported. At this time, the gate valve is also a kind of equipment that must be used, and it can also transport highly corrosive media in many industrial applications. We also all know that some media are highly corrosive, which will affect the service life. However, if stainless steel gate valve is used, it can also have good corrosion resistance, such as The current paper industry is very developed, but when paper is made, water or some other chemical liquefaction is generally used, and for these liquids, they must be transported well when they are used. As long as the valve is used for transportation, stainless steel gate valve is a better choice. Why do you say this? This kind of valve can perform a variety of functions. First of all, when it is in use, it can perform good functions of interrupting, diverting, and merging. The various functions make it very suitable for the needs of the paper industry when it is used. So it is a preferred type of valve in this regard. Another point is that stainless steel gate valves have advantages in materials. Stainless steel materials have strong performance in terms of high temperatur In many control applications, the valve positioner is one of the important accessories of the regulating valve. Especially for a specific application, if you want to select an applicable (or excellent) valve positioner, you should pay attention to the following factors: 1. Can the valve positioner achieve "split_ranging"? Is it easy and convenient to realize "split process"? The "split range" function means that the valve positioner only responds to a certain range of input signal (such as 4 ~ 12mA or 0.02 ~ 0.06mpag). Therefore, if you can "split range", you can control two or more regulating valves successively with only one input signal contact according to the actual needs. 2. Is the adjustment of zero point and range easy and convenient? Can the zero point and range be 1、 Before starting the condensing boiler, it is necessary to check whether the pressure gauge and temperature gauge display normally. If any problem is found, it needs to be repaired in time. This must not be ignored. Of course, it is necessary to carefully check whether there is water leakage in the pipeline and whether there is abnormal noise in each water pump. If there is any problem, At this time, the condensing boiler cannot be started. 2、 Before starting up, great attention should also be paid to the maintenance of the equipment. For example, it is necessary to check whether the circulating water in the make-up water tank and the primary system of the boiler is sufficient. If there is a lack or accidentally discharged after heating, it is necessary to contact the after-sale Sewage lift pump is a pump product with simple installation and convenient disassembly. It is generally suitable for all kinds of industrial plants or sewage treatment projects. No matter where it is used, the selection of sewage lift pump is a very important link. If it is wrong, it will be a waste of money. The sewage lift pump is mainly used for sewage discharge in places without gravity drainage. First of all, we have to have drainage needs before we use it. Because the municipal sewage pipe does not sink (the municipal sewage pipe refers to the rainwater and sewage pipe under the municipal road, which is generally arranged under the non motor vehicle lane and carriageway on the northwest side of the road, and the soil covering depth is 0.6-0.7m), Therefore, all drainage point The existence of pneumatic valve in our company has solved the urgent needs of many users, and its special structure and function are in line with the actual situation. Therefore, it has attracted more and more attention, and customers continue to include it in the category of emergency demand procurement. The beautiful pneumatic valve is suitable for installation in various occasions. The corresponding requirements are not strict. It can also be directly exposed to the air to resist the invasion of the external environment. How to judge whether the pneumatic valve is easy to use has become one of the problems considered by customers. 1.Check the matching degree of model, specification and requirements There are many types and specifications of pneumatic valves. If you are As we all know, ball valves are widely used in chemical, petroleum, metallurgy and other fields. The inner wall of the popular all welded ball valve is extremely smooth. In the process of ball valve conveying medium, the friction between the inner wall of the ball valve and the medium is very small, and the medium can pass unimpeded. However, the operation of all welded ball valve will be affected by some factors. 1、 Influence of sealing materials In actual working conditions, all welded ball valves generally use various gases as media: such as natural gas, gas, gas, chemical industry, heating, heating, etc. the temperature of these media is generally between - 20 ℃ - 150 ℃, and the nominal pressure is PN16-25 pressure. The soft seal can meet the requirements, but the quali In recent years, with the rapid development of scientific and technological revolution, traditional industries and traditional manufacturing methods are facing great challenges, and the development of many traditional industries is in trouble. Relying on the imitation of foreign production mode is not a long-term solution. Only by truly improving the quality of products, doing a good job in the product market and improving their own scientific and technological innovation achievements can we change the current dilemma of social development. The screw sealing line in contact with the stator and rotor in the screw pump completely separates the income chamber from the discharge chamber, so that the screw pump has the isolation function of the valve, and can realize the multiphase mix In order to prevent fluid backflow in the pipeline during operation, a hydraulic ball valve needs to be installed on the pipeline. Therefore, the type and specification of hydraulic ball valve meeting the service requirements shall be purchased from the manufacturer of hydraulic ball valve. So, in order to ensure the normal use after installation, what should be paid attention to when installing the hydraulic ball valve? Next, the manufacturer of reliable hydraulic ball valve will tell you. 1.The hydraulic ball valve shall not bear weight Although the quality of the hydraulic ball valve produced by the manufacturer of the hydraulic ball valve is very good, attention should be paid to avoid bearing the weight of the hydraulic ball valve in the pipeline during installation, How to adjust the pressure relief valve group of the concrete pump truck correctly? In the construction process, if the operators move disorderly due to their unclear understanding of the performance of each part of the concrete pump truck, it will easily lead to various faults in the operation of the concrete pump truck, which will bring a lot of inconvenience to the on-site construction. Generally, the regulation of pressure relief valve group, as an essential step in the operation process, also plays an important role in the whole construction process. 1、Overflow valve regulation When adjusting the pressure relief valve group, first adjust the condition of the overflow valve through the following steps: first loosen the adjusting rod of the superimposed overflow valve u In recent years, the sales volume of liquid ammonia emergency shut-off valve shows the trend of high-speed explosion, and its application scope covers many different fields such as mining, petroleum, chemical industry and so on. The following briefly introduces how to achieve good explosion-proof performance of liquid ammonia emergency shut-off valve: 1、The shell material has the explosion-proof effect of gas explosion pressure Compared with other types of solenoid valves, liquid ammonia emergency shut-off valve has better explosion-proof performance because its shell material has the explosion-proof effect of gas explosion pressure. Most shell materials are made of metal frame and flame retardant and high temperature resistant resin. These two materials play a very impor