Raindrip PC8050B 2 GPH Pressure Compensating Drippers connect to your main irrigation supply line or at the end of a 1/4” line to customize your drip system to your individual needs. The pressure-compensating design maintains a constant 2 GPH water flow rate and operating pressure from 10-60 PSI over long circuits, hillsides, and uneven terrain. The turbulent flow design virtually eliminates clogging. Made of durable plastic, the dripper is easy to install and can be buried and "ported" up to surface with 1/4" tubing. Raindrip stands by their product and gives a 1 year 100. If your product breaks, Raindrip will send you a new one for free, minus shipping and handling.