Sanitary valves standard and categories
Common industrial valve standards include American Standard, Chinese Standard, and Japanese Standard. The common hygienic valve standard is 3A and FDA standard. The scope of application of the hygienic valve standard using different standards is also different. For example, the American hygienic valve standard is ASME-BPE (Bio-Processing Equipment), while the European standard is EHEDG (European Hygienic Equipment & Design Group). The control diameter standards of the valve are: 3A/IDF standard, ISO standard, and DIN standard. The difference between these valve standard is that FDA is divided into GMP and PAT two categories, while the US food valve standard FDA and USP pay more attention to the use of materials and the process and implementation of equipment. Like the international industrial standard of food and beverage valves will involve 3A, FDA, DIN, SMS, BS, etc., 3A standard more cares about the structural design of equipment, while the FDA standard focuses on the material and process of the valve and testing and certification. There are many types of hygienic valves.
- By purpose (such as chemical, petroleum, power station, etc.),
- By medium (such as steam and air valves),
- By material (such as cast iron valves, cast steel valves, forged steel valves, etc.),
- By connection form (such as internal thread and flange valves),
- By temperature (such as low-temperature valves and high-temperature valves). Most Chinese valves are divided according to pressure and structural type
