Turbulent flow pressure compensating drippers. Each individual dripper maintains its rated flow rate (GPH) for inlet pressures ranging from 10 to 50 PSI. This makes installation easier and less complex. These drippers can be used at the end of 1/4 inch tubing feeders or inserted directly into 1/2 inch hose. In the latter, they may be buried and the water ported up to the ground surface with a length of 1/4 inch tube. Use 1/2 GPH for heavy (clay) soil.