The utility model discloses a no bottom valve liquid level automatic control waste fitting discharging. It is including no bottom valve jar, centrifugal pump and floater liquid?level?controller, no bottom valve jar side has the outlet of sewer, the outlet of sewer passes through the outlet of sewer pipe and links to each other with the centrifugal pump water inlet, be equipped with the ball valve on the outlet of sewer pipe, the centrifugal pump exit is equipped with the sewage drain pipe, be equipped with the sewer ball valve on the sewage drain pipe, floater liquid?level?controller links to each other with the centrifugal pump switch, the utility model is characterized in that, no bottom valve tank deck portion is equipped with the water inlet one time, is equipped with the ball valve on the water inlet, and the bottom is equipped with sewage and imports, the sewage import links to each other with waste water collecting tank through the sewage inlet tube, no bottom valve tank deck portion is close to sewage inlet tube upper end. The utility model provides a centrifugal pump when exceeding the liquid level, sewage drainage complex operation, the easily dry commentaries on classics damage of pump, the frequent switch of personnel inspection scheduling problem very big have made things convenient for the actual production.