Ag Catalog 2003

How PC Dripline WorksCoverSilicone DiaphragmPressure-Compensating ChamberInlet to PC ChamberOutlet from PC ChamberSelf-Flushing ModeThe emitter self-flushes at the beginning and end of eachwatering cycle to assure long-term reliable performance.In the pre-pressure compensating mode, the water flowsfreely around and through the labyrinth, flushing anycontamination through the emitter outlets.Compensation ModeAs pressure increases, the diaphragm is furtherpushed against the labyrinth. This increases theeffective length of the labyrinth.TopViewEffective length ofLabyrinthSideViewPSIPressure Compensationwithout Flow Path ReductionConventional emitters pressure compensate by using arestrictive metering groove that increases the likelihoodof clogging. Using a new, patented technology, the PCDripline emitter eliminates the metering groove. Pressurecompensation is achieved by gradually lengthening theturbulent flow path which is significantly larger thanconventional metering grooves.Rain Bird PC Dripline Flow Path Lengthensas Pressure IncreasesAs pressure increases, the diaphragm begins to compresslongitudinally against the emitter’s sloped labyrinth. Thiscompression lengthens the torturous path through whichthe water must pass without reducing the cross-sectionalsize of the flow path. The cross-sectional area of the RainBird PC Dripline emitter flow path at higher pressure issignificantly larger than that of conventional pressurecompensating inline emitters. The result is the most clogresistant,pressure compensating inline emitter available.