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Anonymous users2024-02-07Here 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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Anonymous users2024-02-061. The sealing surface is different.
The sealing surface of D71X-16 is a rubber seal, and the D71H-16 butterfly valve is a stainless steel seal.
2. The corrosion resistance is different.
D71X-16 can only pass the medium of general temperature and is not resistant to acid and alkali. D71H-16 butterfly valve is corrosion-resistant and friction-resistant, and can pass through acid, alkali or impurities.
3. The role is different.
D71X-16 is suitable for the temperature -23 socks coarse soft seal butterfly valve 200, nominal pressure of food, medicine, chemical, petroleum, electric power, metallurgy, urban construction, textile, papermaking, steel, water conservancy and other industries on the pipeline to regulate the flow and intercept the medium.
The D71H-16 butterfly valve is suitable for use in industrial pipelines that are resistant to acid friction.
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Anonymous users2024-02-05The difference between the two is that the material used in the valve body is not the same, 16 is not followed by any symbol, which is the default, that is, carbon steel (generally represented by C), if you need to indicate the material, it is followed by the symbol, such as Q for ductile iron, P for stainless steel, etc.
Butterfly valve refers to a kind of valve in which the shut-off part (disc or butterfly plate) is a disc and rotates around the valve shaft to achieve opening and closing, which mainly plays the role of cutting off and throttling on the pipeline. The butterfly valve opening and closing part is a disc-shaped butterfly plate, which rotates around its own axis in the valve body, so as to achieve the purpose of opening and closing or adjusting. Butterfly valves are suitable for transporting various corrosive and non-corrosive fluid media in engineering systems such as furnaces, coal gas, natural gas, liquefied petroleum gas, city gas, hot and cold air, chemical smelting and power generation and environmental protection, and are used to regulate and cut off the flow of media.
Butterfly valves are classified into: handle butterfly valves, turbine butterfly valves, pneumatic butterfly valves, electric butterfly valves, etc.
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Anonymous users2024-02-04D71X-16 can be ductile iron, stainless steel, carbon steel, etc.
The D71X-16Q can only be made of ductile iron.
It's just that the material has special requirements, as if it were like this.
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Anonymous users2024-02-03D71X-16 According to the standard JB T 308, the model below 16 kg is omitted, and gray cast iron should be used; The omitted valve body material of more than 25 kg should be made of carbon steel. Of course, less than 16 kg can be used stainless steel, carbon steel, etc. according to the actual working conditions and the requirements of the purchaser.
The D71X-16Q body material is ductile iron.
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Anonymous users2024-02-02Q should be made up by yourself, generally 16 behind the valve body material, C carbon steel, P not embroidered steel, etc., I have not seen Q, 16 behind no symbol, on behalf of cast iron,
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