Dani Or

The emitter is a device used to dissipate pressure and to discharge water at a constant rate at many points along a lateral. It is the main component of the drip irrigation system and determines its characteristics. Many types of emitters exist on the market, each with its specific properties, and may be classified according to the following criteria (Karmeli 1977): flow rate; form of pressure dissipation; and details of construction and incorporation in the lateral. Some of the older types are shown in Fig. 2.1.