A system including: (a) a pipe having an aperture providing fluid communication between inner and outer pipe surfaces； (b) a cylindrical drip emitter disposed within the pipe, including: an emitter body having an outer facing having a generally convex contour adapted in generally complementary fashion to a concave contour of the inner pipe surface, the outer facing secured to the inner surface； a liquid inlet section adapted to receive a liquid from within the pipe, and to deliver the liquid, via the aperture, to the outer facing； a pressure-reducing section disposed in fluid communication with the liquid inlet section； functionally active sections including the pressure-reducing section, the liquid inlet section, the functionally active sections disposed within, and longitudinally defining, a position of a longitudinal segment of the body； and at least one functionally passive section, disposed on the outer facing, within the longitudinal segment； and (c) a liquid flow path fluidly connecting between the liquid inlet section and the passive section, via the pressure-reducing section, and between the passive section and an ambient environment, via the first aperture, wherein the first aperture is situated within longitudinal bounds of the longitudinal segment, and radially aligned with the functionally passive section disposed within the longitudinal segment.
