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Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:
The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.
First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.
These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.
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Stainless steel valves are required.
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Temperature: more than 100 degrees for cast iron, more than 200 degrees for ductile ink, and more than 400 degrees for cast steel.
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We make copper valves with 16 pressures, some of which are resistant to high temperatures, 120 and some of which are 70-80°.
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To use fluorine-lined, the special butterfly valve for salt water clamping is realized through the following technical scheme: the special butterfly valve for salt water clamping (chlor-alkali brine special valve), including the valve body, and the butterfly valve disc matched with the valve body, it is characterized in that the contact part between the valve body and the valve disc is provided with a PTFE sealing ring, and the outer surface of the butterfly valve disc is covered with a PTFE anti-corrosion layer. In order to make the two will not fall off, loosen and deform in use, the valve body is solidified with the PTFE sealing ring, and the butterfly disc is solidified with the PTFE anti-corrosion layer.
For better corrosion protection, the outer surface of the valve body and the butterfly disc are coated with a Teflon anti-corrosion layer. Because the valve disc and the valve body are equipped with an anti-corrosion sealing layer, it has the advantages of good sealing performance, strong corrosion resistance, easy processing and long service life.
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Do you make salt? Acid and alkali resistant valves can be called salt water valves, stainless steel ball valves, globe valves, gate valves, etc.
You can find Dalian Yongjia valve fittings **** This company has the brine valve you said.
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You can choose a gate valve, generally speaking, there is no temperature requirement for brine valves. It's a very ordinary thing. But I think I still have to buy *** points. Trustworthy.
And you can find the answer yourself on the valve network.
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One grade C4 steel.
Two: Chemical composition:
c: si: 3-5 mn: 1 cr: 13-15 ni: 13-15 p: s:
Three: the scope of application, the field of application:
C4 steel can be widely used in chemical, fertilizer, mining, metallurgy, national defense, petrochemical, pharmaceutical, chemical fiber, pesticide, dye, papermaking, food and other industries. C4 stainless steel pipe is mainly used for concentrated sulfuric acid and concentrated nitric acid, especially concentrated sulfuric acid and concentrated nitric acid with a concentration of more than 98%!
Four: Overview: C4 (00Cr14Ni14Si4) is an ultra-low carbon high silicon austenitic type stainless acid resistant steel, which has excellent corrosion resistance in strong oxidizing media, far better than general stainless steel (including 304L) Compared with high silicon and high purity aluminum, its corrosion resistance is better than that of high purity aluminum and similar to high ferrosilicon, but the mechanical strength and machining performance are incomparable with high purity aluminum and high ferrosilicon.
Therefore, at present, C4 steel is recognized as a material with strong oxidation, especially concentrated nitric acid, and good comprehensive properties in the medium materials. C4 steel has won the first prize of scientific and technological progress achievements of the Ministry of Ordnance. It is similar to the United States Durcomet 5, the former Soviet Union ZU654, Germany VEWA611, France and other years into the national standard GB2100-80 in its code name 300.
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Nitric acid - Nitric acid is a strong acid that is highly oxidizing and corrosive. Nitric acid is easily soluble in water, and the pure nitric acid solution is colorless and transparent at room temperature.
Valve materials for nitric acid should consider not only the concentration of nitric acid, but also the temperature, less than 50% dilute nitric acid. 304 can be used when the temperature is not high, 304L can be used when the concentration is 50%-65%, 304L can be used when the temperature is not high, C4 and C6 steel or aluminum can be used when the concentration is 65%-98% and the temperature is not high; Concentrated nitric acid, high temperature (> 50 degrees) is used for high silicon cast iron, and in a few cases, 304L is used to line PTFE.
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Tell the valve manufacturer your medium and concentration, and they can help you choose.
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Add letters after the pressure level, such as 16C, 25P R, 100I, etc., respectively indicate carbon steel, stainless steel, molybdenum-containing titanium stainless steel, chromium-molybdenum steel, etc., you can check the valve design manual and other information, there is a detailed introduction.
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Tianjin valve factory will answer for you:
If there is sediment, it is better to have a soft-sealed butterfly valve;
Take seawater: because seawater is very corrosive, generally, the valve body can be made of ductile iron, and other parts should be made of stainless steel, as for the grade of stainless steel, it can be decided according to the purchase cost, service life, seawater test results (content concentration), etc.
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Honestly, it's up to the judges.
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