Make the transition from Pop-Up Drainage Emitter with Elbow to drain pipe with this Adapter. Connects 3 in. and 4 in. sewer and drain fittings to 3 in. & 4 in. single-wall corrugated pipes, 3 in. & 4 in. sewer and drain pipes, 3 in. & 4 in. triple-wall pipes, and 4 in. Drain Waste Vent/Sch. 40 pipes. The Pop-Up Drainage Emitter works as part of a complete drainage system to safely discharge collected water at a point of release downstream. Adapter is made of polystyrene. Pop-Up Drainage Emitters are a part of a complete drainage system that help with stormwater management. They work with pipes, catch basin drains, channel drains, trench drains, and drain grates to filter, capture, and convey excess water to drain pipes; the pipes carry the water downstream to discharge with a Pop-Up Emitter, or to percolate into the ground with a dry well or infiltration trench. Use our free drainage calculators, Home Drainage Center, and NDS Stormwater Drainage mobile app to find the best solution for your specific drainage problem. NDS, founded in 1972, is the preferred choice of professionals and offers proven products, tools, and expert support to help you get the job done right.