Detailed Introduction of GB Standard Stainless Steel Gate Valve Standards and Specifications of Stainless Steel Gate Valve design and manufacture of stainless steel gate valves follow multiple national standards, ensuring their quality and performance. Here are some key standards and specifications: Design and Manufacturing Standards GB2235-89: This is the main design and manufacturing standard for stainless steel gate valves, which specifies the structural and performance requirements of the valves. ural Length Standards GB12221-89: This standard defines the structural length of the valves, ensuring that the overall dimensions of the valves conform the specifications. Flange Size Standards JB/G79-94: This standard specifies the flange size of stainless steel gate valves, facilitating the connection with equipment. Valve Inspection and Testing Standards GB13927: This standard covers the inspection and testing methods of valves, ensuring the reliability and safety of before use. Main Materials and Application Scenarios of Stainless Steel Gate Valves Stainless steel gate valves are widely used in various industries due to their excellent corrosion resistance durability. The main materials include: Main Materials ZG1Cr18Ni9Ti series ZG00Cr18Ni10 series G1Cr18Ni12Mo2Ti series ZG00Cr17Ni14Mo2 series WCB series The choice these materials allows stainless steel gate valves to adapt to different operating environments and medium conditions. Application Scenarios Stainless steel gate valves are particularly suitable for regulating flow, their valve stem has a relatively short opening and closing stroke and has a very reliable cutting function. They are very suitable for use as cut-off or regulation and throttling and are widely used in petroleum, chemical, power plant, metallurgy and other industries. Different Types of Stainless Steel Gate Valves and Their Characteristics J41 Stainless Steel Gate Valve Features: The J41W stainless steel gate valve has excellent sealing performance and a long service life. Its structural design allows it to maintain working condition under different working conditions. J21W Stainless Steel External Thread Gate Valve Features: The J21W stainless steel external thread gate valve has good performance and is generally used for smaller flow rates. It is suitable for sealing gases or liquids (such as steam, oil products) with higher pressure. Its design takes account the reliability of long-term use. Installation and Maintenance Precautions of Stainless Steel Gate Valves Installation Precautions When installing stainless steel gate valves, is necessary to strictly follow the relevant national standards and specifications to ensure the correct installation and use of the valves. Maintenance Precautions Regular inspection and maintenance of stainless gate valves, especially the inspection of the sealing surface, are required to ensure their good working condition. If there is leakage or other abnormal conditions in the valve, it should be dealt with in time to avoid major faults caused by minor problems. From the above information, it can be seen that GB standard stainless steel gate valves not only strict standards and specifications in design and manufacturing, but also have extensive applications and important significance in material selection, application scenarios, and installation and maintenance。