Stainless steel valves are widely used in many industrial systems and transmission systems, such as chemical industry, metallurgy and other industries.
This article will take you to learn about the different types of stainless steel valves. You can learn about the various types based on materials, application industries, standards, valve functions, etc.
There are many types of stainless steel, so based on different types of stainless steel, stainless steel valves can also be divided into the following categories.
Since 304 stainless steel contains at least 18% chromium and 8% nickel, 304 stainless steel valves have moderate corrosion resistance and can resist corrosion in the atmosphere and general industrial environments. It also has good heat resistance and can operate smoothly in high temperature non-corrosive environments. 304 stainless steel valves are widely used in the chemical industry, food processing, storage and transportation, water treatment and other fields.
316 stainless steel valves have stronger corrosion resistance than 304 stainless steel valves. They can effectively resist corrosion from a variety of chemical substances such as nitric acid and sulfuric acid, and are suitable for use in highly corrosive industries and environments such as the chemical industry. Therefore, 316 stainless steel valves have excellent durability and a long service life. These excellent properties make it widely used in industries such as petroleum, chemical industry, and pharmaceutical industry.
Compared with 316 stainless steel, 316L stainless steel has a lower carbon content and contains 2-3% molybdenum. 316L stainless steel valve has better corrosion resistance and can resist the erosion of various chemical corrosive environments containing acids, alkalis and salts, ensuring the stability of the system. 316L stainless steel valve also has an excellent heat resistance and can always maintain operation in high temperature environments. The above advantages make 316L stainless steel valves widely respected in the fields of power, chemical industry and marine ships.
Duplex stainless steel valves combine the advantages of ferritic stainless steel and austenitic stainless steel, have excellent corrosion resistance, and are not affected in highly corrosive environments. They are very suitable for use in high-intensity corrosive systems and industry fields. Duplex stainless steel valves also have excellent heat resistance and can adapt well in a wide temperature range of -50 degrees Celsius to 300 degrees Celsius. It also has good durability and can be used for a long time.
Duplex stainless steel valves are widely used in fields such as oil and gas, chemical industry and offshore operations.
Stainless steel valves have many different functions, for example, some valves can intercept fluids, and some valves can prevent fluid backflow.
Based on different valve functions, stainless steel valves can be divided into the following categories.
The stop valve mainly uses the gate disc to cut off and control the flow of fluid, and is widely used in many fluid control systems. It is suitable for various pressure environments and systems has good durability, and is very convenient to use, operate, and maintain. The stop valve can also be subdivided into direct-flow stop valves, angle stop valves, etc.
The gate valve is mainly used to close the valve by dropping the gate plate and cutting off the fluid. The gate plate is perpendicular to the direction of fluid flow, so the sealing is very good after closing. The gate valve cannot be used for regulation or throttling, it can only be fully opened or fully closed, and it is used at a high height, and it takes a long time to open and close. The gate valve is mainly used in the pipeline system of various industries to cut off the fluid.
Under the action of the valve stem, the ball valve opens and closes the valve by rotating. Compared with the gate valve, the ball valve is more flexible, can be opened and closed quickly, and is very light, easy to operate and maintain. It can also be classified into manual ball valves, automatic ball valves and start-up ball valves according to different driving methods. Ball valves are widely used in pharmaceutical, electric power, petrochemical and other industries.
The butterfly valve opens and closes the valve by rotating the butterfly plate around the butterfly shaft. The butterfly valve is very suitable for cutting off and regulating fluid flow, and it is light in weight, easy to operate and maintain. However, it has a small adjustable range and is not suitable for use in high temperature and high pressure environments. Butterfly valves are often used in pipeline systems in the fields of drainage, fire protection, etc.
A check valve is an automatic valve that also controls the flow of fluid with a gate flap to prevent fluid backflow or leakage. It can be further classified into lift check valves, swing check valves, etc. Check valves can prevent the backflow of transmitted fluids and ensure the safety of pipeline systems. They are commonly used in metallurgy, chemical industry and other industries.
Different application industries can match corresponding stainless steel valves, and such valves can help the corresponding systems and industries achieve better results. Based on the application industry, stainless steel valves can be divided into the following categories.
Stainless steel valves also have corresponding market standards. Due to regional differences, several different standards have gradually been formed. The common standards in the market are the following categories.
ANSI standard: This standard is mainly used in the North American market and follows the national standards of the United States.
DIN standard: This standard is applicable to the European market and mainly follows the national standards of Germany.
GB standard: This standard is widely used in the Chinese market and follows the national standards of China.
JIS standard: This is the national standard of Japan and is mainly used in the Japanese market.
The above is the classification of common stainless steel valves on the market.
If you want to choose the right stainless steel valve for your industry and system, then this article can give you a good reference. Of course, if you want to know more relevant information, please feel free to contact us.
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