The manufacturing standards of Sanitary Butterfly Valve mainly include ISO, DIN, IDF, SMS, 3A and GB/T.

Specifically, sanitary butterfly valves will follow international or industry standards such as ISO, DIN, IDF, SMS, 3A, etc. during the design and manufacturing process to ensure that the quality and performance of the products meet the requirements of specific industries, such as food processing, pharmaceuticals, etc. These standards cover the design, materials, testing and other aspects of butterfly valves, aiming to ensure the hygiene, durability and reliability of butterfly valves.

In addition, in China, the manufacture of butterfly valves will also follow some national standards, such as GB/T2238-1989, which have detailed provisions on the structural length, flange connection size, pressure test and other aspects of butterfly valves.

In summary, the manufacturing standards of butterfly valves are diverse, and the specific standards adopted depend on the application field of the product, customer needs and manufacturer specifications.