[Valve knowledge] Difference of JIS Flanged Ball Valve and DIN Flanged Ball Valve

Standardization:

1.JIS Flanged Ball Valve: Designed and manufactured according to Japanese Industrial Standards (JIS), which are widely used in Japan and some other Asian countries.
2. DIN Flanged Ball Valve: Manufactured according to the Deutsches Institut für Normung (DIN) standards, which are commonly used in Europe and other parts of the world.

Flange Dimensions:

1.JIS Flanged Ball Valve: Features flange dimensions specified by JIS B 2220, which include variations such as JIS 10K, JIS 20K, and JIS 40K.
2.DIN Flanged Ball Valve: Utilizes flange dimensions defined by DIN 2501, which include PN6, PN10, PN16, PN25, PN40, and PN64 pressure ratings.

Flange Facing:

1.JIS Flanged Ball Valve: Typically employs flat face (FF) or raised face (RF) flange facing options.
2.DIN Flanged Ball Valve: Offers a wider range of flange facing options, including flat face (FF), raised face (RF), ring-type joint (RTJ), and tongue-and-groove (TG) facing.

Materials and Construction:

1.JIS Flanged Ball Valve: Materials and construction may vary but commonly include carbon steel, stainless steel, and ductile iron for body and trim materials.
2.DIN Flanged Ball Valve: Similar to JIS valves, DIN valves are available in a variety of materials including carbon steel, stainless steel, and exotic alloys like duplex and super duplex stainless steel.

Application and Market:

1.JIS Flanged Ball Valve: Primarily used in industries following JIS standards such as marine, shipbuilding, and oil & gas industries in Japan and Asia.
2.DIN Flanged Ball Valve: Widely used in European industries such as chemical, petrochemical, pharmaceutical, and water treatment industries, as well as in other regions where DIN standards are adopted or preferred.

Testing and Certification:

1.JIS Flanged Ball Valve: Tested and certified according to JIS standards and may require additional certifications for specific applications or markets.
2.DIN Flanged Ball Valve: Subject to testing and certification requirements specified by DIN standards and may also require additional certifications based on specific industry regulations or customer requirements.

In summary, while both JIS and DIN flanged ball valves serve the same purpose of controlling fluid flow in industrial applications, they differ in terms of standardization, flange dimensions, facing options, materials, applications, and market preferences. Understanding these differences is crucial for selecting the most suitable valve for a particular application or project.