An emitter comprising: a plurality of inlet apertures through which liquid enters the emitter； a manifold flow channel into which liquid that passes through the apertures flow； an elastic diaphragm that seats on the manifold flow channel； an outlet aperture through which liquid that enters the emitter exits the emitter； wherein liquid that enters the inlet apertures displaces only a portion of the diaphragm from the manifold channel so that the liquid can leave the manifold channel and flow through the emitter to reach the outlet aperture.
