DIS-RPC - Retention PC Dripper (CNL Dripper)

The DIS-RPC Dripper is built around the DIS-PC Dripper but includes an additional retention valve at the water inlet of the dripper. This retention valve turns this Pressure Compensated dripper into a non-leakage (no drain) dripper (CNL Dripper) or in other words a retention dripper.

The main function of the retention feature is to prevent water drainage from the irrigation system at the end of the irrigation cycle. At the start of the next irrigation cycle there is no need to fill the system again; water is then delivered instantly. The result is a very accurate water discharge and no runoff and water waste. This quality makes the DIS-RPC Dripper usable in areas where precision is essential, for example, in greenhouses or in places where pulse irrigation is needed.

Regular driplines that use either conventional drippers (non-compensated) or PC drippers drain out the water from the system at the end of the irrigation cycle. The drainage of the water causes a vacuum in the system. This vacuum causes a suction, which will bring air, mud and debris into the system through any opening, most likely the drippers. The debris and mud bypass the filtration system and get fed to the drippers at the next irrigation cycle. As a result, drippers are clogged and the system needs flushing more often. The DIS-RPC Dripper eliminates the vacuum phenomenon completely by retaining the water and maintaining a low pressure in the system. At the next irrigation cycle the system is already full and once the pump is activated water starts emitting instantly from all drippers at the same time. This quality of the RPC Dripper makes it very suitable to subsurface drip irrigation where the driplines are buried and in installations where the application of fertilizers has to be accurate.