抄録
This study investigated characteristics of pheumatic pressure and vent in drainage system with a stack vent equipped air admittance valves using the14th floor scale drainage experimental tower. As a result, it is obvious that the more there is much equipped air admittance valves, the pheumatic pressure becomes low and, the vent value increases in this system. And, it is obvious that horizontal fixture branch's length does not affect the pheumatic pressure and the vent value.
