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【課題】灌漑用液体の圧力が高圧の場合だけでなく低圧の場合であっても、灌漑用液体を定量的に吐出できるエミッタを提供すること。【解決手段】エミッタは、エミッタ本体、フィルムおよびカバーから構成される。エミッタは、取水部、吐出部、第１流路、第２流路、流量減少部、流路開閉部、減圧流路およびバイパス流路を有する。チューブを流れる灌漑用液体の圧力が第１圧力未満の場合、カバーの第１取水用貫通孔の開口部は、フィルムにより塞がれている。チューブを流れる灌漑用液体の圧力が第１圧力以上の場合、フィルムが変形することにより、灌漑用液体は、第１取水用貫通孔、フィルムとカバーとの間の隙間および第２取水用貫通孔を介してエミッタ本体内に取り入れられる。【選択図】図８
