Multi-outlet bubblers are used to deliver higher amounts of water to a plant. Most of the time the bubbler is mounted on a 1/2" nipple and then 1/4" tubing transports the water from each outlet to the desired location. The fixed flow bubbler has four outlets. The 4-Outlet Pressure Compensating Bubblers are pressure compensating from 20 to 60 psi and are a fast and excellent way to distribute water throughout your garden or flowerbed directly from a 1/2" threaded riser. Each bubbler is color-coded to indicate different flow rates. Also available is a four-way manifold with no pressure compensation.