The universalvalve includes bronze gate valve, bronze ball valve, bronze globe valve and cast iron valve etc.
通用阀门主要有：青铜闸阀、青铜球阀、青铜截止阀、铸铁阀门等。
2
The paper introduces requirement of valve strength test and leakage test, analyse universal problems of valve test, and put forward test technology of valve.
介绍了阀门强度试验和密封试验的要求，分析了阀门试验中存在的普遍问题，提出了阀门试验工艺。
3
By analysis of them, some shortcoming is detected and a universal modeling method of electronic expansion valve core is put forward at last.