PROBLEM TO BE SOLVED: To provide emitters that can discharge irrigation liquid quantitatively not only when the pressure of the irrigation liquid is high but also when the pressure of the irrigation liquid is low.SOLUTION: An emitter consists of an emitter body, a film, and a cover. The emitter has a water intake portion, a discharge portion, a first channel, a second channel, a flow rate reduction portion, a channel opening and closing portion, a decompression channel, and a bypass channel. When the pressure of the irrigation liquid flowing through a tube is less than the first pressure, an opening portion of a first water intake through hole of the cover is blocked by a film. When the pressure of the irrigation liquid flowing through the tube is the first pressure or more, the irrigation liquid is taken into the emitter body through the first water intake through hole, the gap between the filter and cover, and the second water intake through hole by transformation of the film.SELECTED DRAWING: Figure 8
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