DIG PCA Online Pressure Compensating Drip Emitter with Check Valve - Pack of 300The innovative PCA CV pressure compensating drip emitter with a check valve has a water saving feature that eliminates water drainage when the system is shut off and is designed to produce a consistent flow rate over a wide range of pressures in challenging terrain or complicated layouts. The drip emitters self activated flushing mechanism provides excellent clog resistance for use in a wide range of applications in residential and commercial