Octa-Bubbler? is a pressure compensating device with a 1/2 in FPT inlet and 8 swivel port 3/16 in outlets. Constructed using ABS plastic. Built-in back flow prevention engineered for added protection. Octa-Bubblers deliver water to multiple locations. Optional port plugs are available for unused ports. Available flow rates are 2 GPH, 6 GPH and 10 GPH; 20 GPH using a flow control device. Pressure compensation range is 20?60 PSI.