A drip emitter sized for insertion into a liquid supply tube and positioned adjacent to a dripping aperture in the tube comprises an emitter body having a convex side configured to internally and adjacently fit the tube and an opposite flat side comprising a regulator, wherein the convex side comprises an outlet chamber configured to be fluidically connected to the dripping aperture; a membrane covering at least the regulator; a cover provided with a liquid intake having a filter, wherein the cover is configured to envelop the emitter body except of most of said convex side; and a locking mechanism connecting the flat side and an inner surface of the cover that is adjacent to the flat side so as to join the cover to the emitter body, wherein the membrane is retained therebetween.