The utility model which has the advantages of easy operation and hierarchicalregulation can be used for industry pipelines, urban tap water and sewage conduits.
可用于工业管道和城市自来水、污水管道，是一种使用面广的通用阀门。
2
The triple Eintegration system is reflected in hierarchical structure in function distribution, and automatic regulation of air flow for blast furnace and safety production are realized.