The Jain Irrigation Riser Assembly with Tee is a money and time-saving emission device for your irrigation drip system. A Riser Assembly with Tee is an Octa-Bubbler® adapter for your 3/4 in or 1/2 in main irrigation lines. Each assembly is comprised of a PVC tee, PVC nipples and a high-quality ball valve for a controlled, continuous and leak-free operation.