NDS AccuFlow Emitters are the most accurate Pressure Compensating Emitters on the market. In a side by side comparison, AccuFlow PC emitters perform more consistently, boasting superior flow uniformity when compared to the average competition. They are available in 3 flow rates 1/2, 1 and 2 GPH and are color-coded by flow rate for clear identification. The AccuFlow emitter has a unique self-piercing design making installation tool free and is self-flushing, minimizing clogging and ensuring a consistent drip performance