The three fixture put into use by the order in which they are divided into pneumatic, electrical and automaticopening and closing fixture.
这三种夹具按投入使用的先后顺序分为气动开闭夹具、电动开闭夹具和自动开闭夹具。
2
The utility model discloses a three-jaw quick joint automaticopening and closing ball valve used for connecting a sprinkling standpipe and a sprinkler.
本实用新型是用于连接喷灌立管和喷头的一个三爪快速接头的自动开关球阀。
3
The utility model can also be used for back flushing bag dust collectors and automaticopening and automatical closing devices on non corrosion fluid flow passages.