safety relief valve is an automatic pressure relief device
Safety Relief Valve, also known as the safety relief valve, is an automatic pressure relief device drived by before valve static pressure. According to the different using occasions, it can be used as the safety valve and the discharge valve. Japan, for example, they give few clear definition of the safety valve and the relief valve, generally used for large-scale energy storage such as a boiler pressure vessel safety device is called the safety valve, installed on the pipelines or other facilities is called as the discharge valve. However, if according to MITI's "thermal power technology standard," the important parts of device should be specified to use safety valves, such as the boiler, superheater, reheater, and so on. From this, the safety valve requires more reliability than the relief valve. Besides, from the Japanese Ministry of Labor of the high-pressure gas management rules, the Ministry of Transport and all levels of the ship association rules, the identification and regulations of safety emissions, we call the guarantee of the emissions as safety valve, while not guaranteed as the discharge valve. In our country, both fall lift and low lift are known as the Safety Valve.
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