The article introduces the characteristic and demand of LPG carrier tanker safety valve, and discusses emphati-cally the design, making and debug for lead-down spring safety valve and its structure.

• 本文介绍了液化石油气汽车罐车安全阀的特点与要求,着重讨论了下导式弹簧安全阀的设计、制造和调试。