American standard valve, German standard valve, national standard valve standard difference

First of all, it can be distinguished from the standard code of each country: GB is the national standard, American Standard (ANSI), German standard (DIN). Second, you can distinguish from the model, the national standard valve model is named according to the phonetic alphabet of the valve category. Such as: safety valve for A butterfly valve D diaphragm valve G check valve H globe valve J throttle valve L drain valve P ball valve Q trap S gate valve Z and so on.
There is no special specification between American standard valve, German standard valve and national standard valve, but the difference between the production standard and the pressure level, the body material and the inner material are easy to say, but cast iron, cast steel, stainless steel and so on. Take the American standard for example, the American standard pressure levels from 125LB to 2500LB (or 200PSI to 6000PSI), the main standard API, ANSI, commonly referred to as API, ANSI valve is the American standard valve; German standard valve pressure is usually PN10 to PN320, using DIN standard; If the valve is flanged, use the appropriate flange standard. The world's main valve standards are American standard Petroleum Association API standard, American national standard ANSI, German standard DIN, JIS, GB, European Union standard EN, British standard BS.

Simply put, American standard valves are valves designed, manufactured, produced and tested according to American standards. German standard valves are valves designed, manufactured, produced and tested according to German standards. National STANDARD valve is the valve designed, manufactured, production, testing according to our country's standard. The difference between the three is roughly: 1, flange standards are not the same; 2, the structure length is not the same; 3, inspection requirements are not the same.