Views: 0 Author: J-VALVES Publish Time: 2022-03-03 Origin: Site
In the field of industrial valves, DN300 TRUNNION BALL VALVES are widely used, and different standards have their own specifications and requirements for wall thickness design. ASME B16.34 and DIN 3357, as two standards that attract much attention internationally, understanding the differences in wall thickness design between them plays a crucial role in correct selection, ensuring the performance and safe use of BALL VALVES. Next, we will conduct an in-depth analysis of the differences in wall thickness design of DN300 TRUNNION BALL VALVES under these two standards and provide corresponding selection guidelines.
ASME B16.34 is a standard formulated by the American Society of Mechanical Engineers. It is mainly applied to the design, manufacturing, inspection and other aspects of various valves. It has an important influence in industries such as oil, chemical, and power around the world, especially in North America, emphasizing the reliability and safety of valves under complex working conditions such as high pressure and high temperature.
DIN 3357 is a German industrial standard that covers various technical requirements for industrial valves such as BALL VALVES. It is widely adopted in Europe and many international projects. It focuses on starting from the actual situation of European industry to ensure the universality, durability of valve products and their good adaptability to European pipeline systems.
Comparison Items | ASME B16.34 | DIN 3357 |
Design Concept | Based on high-pressure and high-temperature scenarios in the United States, it ensures strength by increasing wall thickness, and the safety factor is conservatively valued. | Starting from the universality and economy in Europe, it optimizes the wall thickness structure and balances various requirements. |
Calculation Method | It uses complex mechanical models, accurately calculates by integrating multiple factors, and has detailed calculation rules according to the classification of working conditions. | Based on the methods summarized from European engineering practices, it simplifies and optimizes in combination with common working conditions, which is convenient for operation and application. |
Weights of Key Factors Affecting Wall Thickness | Pressure and temperature have high weights, and strict requirements are imposed on the material strength and toughness. | Taking into account pressure and temperature, more attention is paid to factors such as the machinability, adaptability and cost of materials. |
Examples of Wall Thickness Values (Assuming Common Working Conditions) | Under medium-high pressure and medium temperature, the wall thickness of the valve body may be around 30 - 40 mm. | Under the same working conditions, the wall thickness of the valve body may be in the range of 25 - 35 mm. |
· If the ball valve is applied to working conditions with high temperature, high pressure and extremely high safety requirements, such as large petrochemical refining installations in North America, the wall thickness design under the ASME B16.34 standard has more advantages. Its conservative safety factor and thicker wall thickness can better cope with extreme pressure, ensure long-term stable operation, and avoid safety accidents such as rupture caused by insufficient wall thickness.
· If the usage scenario is general industrial projects in Europe, such as ordinary chemical production workshops and heating systems, when meeting the normal pressure and temperature requirements, the ball valve that complies with the DIN 3357 standard is a more appropriate choice due to its consideration of cost and universality in wall thickness design. It can reduce the procurement cost and installation difficulty while ensuring performance.
· When the project is mainly located in North America and is used in conjunction with numerous pipeline systems and equipment that follow ASME standards, choosing the DN300 TRUNNION BALL VALVE that complies with the ASME B16.34 standard can ensure seamless connection during the connection, installation and operation of the entire system, reduce compatibility problems caused by inconsistent standards, and facilitate later maintenance and management.
· For projects in Europe, considering that local pipelines, pumping stations and other infrastructure mostly follow the DIN standard system, selecting the ball valve that complies with the DIN 3357 standard can better adapt to surrounding supporting facilities, improve the coordination and overall efficiency of the system, and ensure the smooth progress of fluid transportation.
· Under the ASME B16.34 standard, due to the relatively thick wall thickness, material costs, processing costs, transportation costs, etc. may all increase. However, from the long-term operation perspective, if the working conditions are harsh, it can reduce costs such as maintenance and replacement, and the benefits brought by ensuring the continuity of production are also considerable.
· The ball valve under the DIN 3357 standard pays more attention to economy in wall thickness design, and the initial procurement cost is relatively low. However, when selecting, it is necessary to ensure that it can meet the actual working condition requirements to avoid failures during the use process due to insufficient wall thickness, increasing additional maintenance costs and downtime losses. It is necessary to comprehensively balance the relationship between cost and benefit for reasonable selection.
In short, when selecting DN300 TRUNNION BALL VALVES that comply with ASME B16.34 and DIN 3357 standards, it is necessary to fully consider various factors such as working condition characteristics, project areas, supporting facilities, and cost-benefit, accurately grasp the differences in wall thickness design, so as to make the most appropriate selection decisions and ensure the performance and safety of industrial valves in practical applications.
