Incremental pressure-compensating drip irrigation emitter

摘要: An outer wall member (50), such as the of a tube, connectable to or integral with pipe (52), has an opening in communication exterior (30,40,53-58). inner (60) is fixedly positioned against inside for separating from fluid path through (52). The surface defining at least portion chamber (62) path. and members define labyrinth (22) having effective cross-sectional area, inlet (24) end receiving pressurized pipe, outlet (26) emitting fluid. A plurality channels (32,34,36) couple intermediate portions directly (30), thereby bypassing respective parts labyrinth. resilient (76), functioning valve, forms barrier between channel (34) responsive pressure restricting when exceeds first predetermined pressure. This prevents part labyrinth, increases length reduces flow that takes place higher