摘要
介绍了一种适用于闸阀、截止阀、蝶阀和球阀等阀门的防开启装置结构、原理及其操作方法 ,该装置可用于供水。
The text introduces the structure,reason and operation of a valve which can't be opened or closed without permission.This valve can be used widely in water,gas and hot supply to solve the mater.
出处
《阀门》
2003年第3期29-30,共2页
VALVE MAGAZINE