When the material is corrosive or crystallization, may cause corrosion or wear of the valve seat

Pressure vessels and equipment commonly used security device has safety valve, explosion-proof tablets.  electri cenergy meter  proved that the reliability of the safety valve and the nature of the material being processed has a direct relationship between the corrosion resistance when the material or crystallization, may cause corrosion or wear of the valve seat, resulting in seal failure; when the material is  power transformers  the reaction. large amount of gas when the pressure within the vessels or equipment will rise sharply, requires a large passage area, this time, the use of explosion-proof film is more appropriate. Ex-piece safety device of simple  air circuit breaker , reliable work, by capacity, is used widely. At present, the domestic metal rupture disc has more in-depth research, has made great progress.