Abstract: A septic tank effluent distribution device, which is comprised of an influent collection chamber, a novel automatic dosing mechanism in conjunction with a pressure distribution chamber. The equal distribution of effluent resulting from this invention greatly improves the efficiency of gravity flow distribution systems. This device is intended to install as the distribution box for any slow-flow soil absorption system, transforming the distribution efficiency of the system to that of a powerful dose, using a simple and reliable technology.