本系列阀门适用于工作温度≤300oC的空气、石油气、水等提质的设备或管路上，作为超压保护装置。
连接法兰标准按DIN2523、2533、2544、2545……等。

These safety valves are used for the equipment and pipelines of air, petroleum gas and water with working temperature lower than 300°C. They have extra pressure protection devices.