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  • 2020/12/11
    The function and advantage of electric explosion-proof ball valve
    The electric explosion-proof ball valve has the characteristics of simple structure, quick switching, large flow capacity, zero leakage and so on. It is suitable for the occasions of high viscosity, containing fiber and solid particle fluid.Electric explosion-proof ball valve is widely used in petrochemical industry, metallurgy, light industry and other industrial automatic control field to cut off or flow of gas, liquid transmission pipeline intermediary. The function of electric explosion-proof ball valve Electric explosion-proof ball valve explosion-proof grade for Exd Ⅱ BT4, protection grade for IP67, field control devices.The main features of the explosion-proof electric ball valve are: when the power is not on, pull the clutch handle for manual operation.When powered on,

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  • 2020/12/4
    New regulation | approval rules for special equipment inspection institutions (draft for comment) was released
    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

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  • 2020/11/27
    What does the valve arrow on the body mean?
    The arrow on the body indicates the recommended pressure direction of the valve, not the direction of medium flow.Valves with a two-way seal can be either unmarked or marked with an arrow, as the valve arrow indicates the recommended direction of pressure, left or right or up or down, one of which is always better. The arrow direction marked on the valve body indicates the pressure direction of the valve, which is usually marked by the engineering installation company as the medium flow direction, resulting in leakage or even pipeline accidents due to incorrect installation. Pressure direction refers to the valve used in the closed state of the pipeline working condition, the arrow direction of the valve body is recommended to bear the pressure, if the wrong installation, th

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  • 2020/11/20
    Northwest oil field special tools to solve the gas valve disassembly problem
    "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

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  • 2020/11/13
    How to maintain the pneumatic ball valve
    To be able to use pneumatic ball valves well we need to be able to maintain the equipment well.It is also a very complicated job to maintain the equipment.It's a lot of work, but we need to be able to do it well in order to be able to run these devices efficiently.However, if we want to be able to maintain these devices well, we need to be able to make sure that we know how to perform the daily maintenance of these devices. A lot of people don't have a clear idea of how to maintain the equipment when they use it.This must be extremely disadvantageous to our use of equipment.Because you can't maintain the equipment, you can't protect the efficiency of the equipment.In the long period of use, it will definitely affect the overall production efficiency.Therefore, it is very i

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  • 2020/11/6
    The 18 valve industry standards will be implemented as of January 1, 2021
    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

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  • 2020/10/30
    What should be avoided when installing the valve?
    Valves are the most common equipment in chemical enterprises. It seems easy to install valves, but if they are not executed in accordance with relevant technologies, safety accidents will occur... No-no 1 Hydrostatic test was carried out under negative temperature in winter. Consequence: the tube freezes quickly during the hydrostatic test, causing the tube to freeze. Measures: water pressure test should be carried out as far as possible before winter application, and the water should be blown clean after pressure test, especially the water in the valve must be cleared in the clean, otherwise the valve will be light rust, heavy freeze crack. During the hydrostatic test in winter, the project must be carried out at a positive indoor temperature and the water must be blown

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  • 2020/10/23
    Wenzhou Yongjia to build a modern manufacturing industry cluster of 100 billion
    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

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  • 2020/10/16
    What are the advantages of low temperature gate valves in service?
    The reason why the valve has a good sealing effect in the process of use, is because it needs effective transport and contact medium in the process of use, low temperature gate valve is also widely used in the current market, we can see in the actual selection process what are the specific advantages of use?The products manufactured by professional manufacturers have a longer service life and can also bring a lot of convenience. The fluid resistance is small, the sealing surface erosion effect is small In choosing a cryogenic valve at ordinary times, can find the product range is very widely used in the market now, we need to know is the product in the actual design process has the characteristics of, because the fluid resistance is small, so the sealing face in use

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  • 2020/10/9
    The diversified utilization of clean power generation has embarked on the path of nuclear energy with Chinese characteristics
    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

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  • 2020/9/25
    Chemical valve selection
    Corrosion has long been one of the most troublesome hazards of chemical equipment. A slight mistake can damage the equipment, or even cause accidents or disasters.According to relevant statistics, about 60% of the destruction of chemical equipment is caused by corrosion, so in the selection of chemical valve should first pay attention to the scientific nature of material.There is usually a misunderstanding, that stainless steel is "universal material", no matter what medium and environmental conditions hold out the stainless steel valve, this is a great mistake. Chemical valve material should be based on the different media, specific analysis of specific problems, not one size fits all.The following for some common chemical media to talk about the selection of

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  • 2020/9/12
    How to identify valve identification paint?
    The outer surface of the valve should be painted out of the factory, the paint layer should be durable, beautiful rules, and ensure that the mark is clear. 1, valve products according to the body material to identify the paint, the color according to the table Body material Gray cast iron, malleable cast iron Nodular cast iron Carbon steel Acid resistant steel, stainless steel Alloy steel Identify paint color Black Silver Medium grey Sky blue Medium blue Note: acid resistant steel and stainless steel are not allowed to be painted, and copper alloy is not allowed to be painted

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  • 2020/9/12
    Domestic VS imported valve, how will you choose?
    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

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  • 2020/9/12
    Oil and gas exploration goes deep
    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

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  • 2020/9/11
    Fluorine lined valves are subject to environmental requirements
    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

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