automatic ball valve

The automatic drainage in front of the ball valve closed;

将自动排水器前面的球阀关闭；

to control jdq type automatic ball valve cut-off device, connect to the main control room of intelligent residential area

控制JDQ型球阀自动切断器，可与智能化小区总控室连接

The principle and key points in the design of floating decanter with automatic rubber ball valve were introduced, and the performance of domestically produced large floating decanter was described.

介绍了采用自动橡胶球阀的浮动式滗水器设计原理和设计要点，并详述了完全国产化生产的大型浮动式滗水器在实际运行中的性能。

and our automatic ball valve and lcd thermostat have got patent in china and ce certification in europe.

韦纳电动球阀和彩色液晶温控器，均获国家专利，电动球阀也具有欧洲CE认证。