The industry valves are used widely in various fields and situations, different working conditions, systems, environments or medias need different valves. According to different working temperatures, there are several typical kinds of valves: valves for high temperature, valves for regular temperature, valves for low temperature, cryogenic valves for extreme low temperature etc.
The designer of an industry valve needs to know the temperature and pressure rating of the industry piping system first, then the characters of valve materials. When the valves are designed, the working temperature is very important factor. To meet the requirements of design temperature and working temperature, the material of valves accessories and methods of valve construction need to be considered very carefully. Some types of valves are very suitable for cryogenic conditions, others may be suitable for high pressure.