In the drip irrigation system, the device that changes the pressure water flow in the capillary into drip or fine flow through the flow channel or orifice is called irrigation drippers or irrigation emitters. Most drippers are made of plastic. The commonly used dripper flow rate is 1 to 4 liters/hour, generally is not more than 12 liters/hour. The quality of the drip irrigation system emitters directly affects the reliability of the drip irrigation system and the quality of the irrigation water. Therefore, the best emitters for drip irrigation in drip irrigation are often compared to the "heart" of the water drippers irrigation system, 2 lph dripper is one of them. There are many ways to classify water drippers.