The dripper online, was installed the emitter on the out side of the pipe, using the puncher make a hole on the pipe,  Then installed the emitter on it.  If it far from the plant, we also can installed a small pipe for it. With 4-80L/H flow rate, this  kinds of products normally used for the tree irrigation. Having more long working life. The emitter is not pre-installed. So it can be installed according to the plant distance, more resonable.

  The available size of this kinds of emitters:

 Some project using of this kinds of drip irrigation system.