An object of the present invention is to provide a drainage system does not need to be positioned individually and tube for water level rise suppression means and the water level adjustment to suppress the water level rise. A provided on the container 72 where fluid is supplied, the water level rise suppression means 42 suppresses the water level rise in the container 72 to discharge the fluid, provided integrally with the water level rise suppression means 42, inlet 44A is positioned in the container, there is downward from the discharge port 42A of the top 44B is level rise suppression means 42 extending upward from the inlet, the outlet is located on the lower side and the container 72 outside from the inlet 44A tube It includes a body 44,. .BACKGROUND 7【課題】水位上昇を抑制する水位上昇抑制手段と水位調整用の管体とを個別に位置決めする必要がない排水装置を提供する。【解決手段】流体が供給される容器72に設けられ、流体を排出して容器72内の水位上昇を抑制する水位上昇抑制手段42と、水位上昇抑制手段42と一体的に設けられ、流入口44Aが容器内に位置し、流入口から上方に延出した最上部44Bが水位上昇抑制手段42の排出口42Aより下方にあり、流出口が流入口44Aより下方かつ容器72外に位置する管体44と、を備える。【選択図】図7
