The Netafim Techline CV XR is a pressure compensating dripline with a check valve enhanced with copper for long lasting protection. The Techline CV XR is ideal for sub surface applications. The Copper Oxide in the emitter will prevent root intrusion without any reliance on chemicals. All emitters turn on and off at the same time, maximizing balance of application and ensures 100% uniformity of water and nutrients. No low emitter drainage, great on slopes, and delivers more precise watering. The Techline CV XR Dripper is highly resistant to clogging from poor quality water, thus increasing filtration efficiency.