System for disposing of fluid from a kitchen sink, having: a kitchen sink for a kitchen cabinet monument of a vehicle, a self-regulating valve (6; 70), a control unit, a sensor, and a first signal connection between the sensor and the control unit, wherein an inlet of the self-regulating valve (6; 70) is connected to a first fluid line which is at least indirectly connected to a discharge opening of the kitchen sink, wherein the self-regulating valve (6; 70) is arranged below the discharge opening of the kitchen sink, with the result that fluid from the kitchen sink can flow into the first fluid line through the associated discharge opening, wherein an outlet of the self-regulating valve (6; 70) can be at least indirectly coupled to a vacuum source, and wherein the self-regulating valve (6; 70) is designed to independently open in the case of a predetermined first amount M1 of fluid in the first fluid line, with the result that the self-regulating valve (6; 70) is in an open state and fluid can flow from the first fluid line through the self-regulating valve, and to independently close in the case of a predetermined second amount M2 of fluid in the first fluid line, with the result that the self-regulating valve (6; 70) is in a closed state and the predetermined second amount M2 of fluid remains in the first fluid line as a remaining amount of fluid, wherein the sensor is designed to capture the open state or the closed state of the self-regulating valve (6; 70), wherein the sensor is designed to transmit a sensor signal representing the captured state of the self-regulating valve (6; 70) to the control unit, wherein the control unit is designed to output at least one control signal on the basis of the transmitted sensor signal, characterized in that the self-regulating valve (6; 70) has a non-return valve which has a sealing seat closable by means of a float ball and is configured to prevent a return flow of a fluid from the outlet to the inlet of the self-regulating valve (6; 70), wherein the non-return valve is arranged directly upstream of the outlet. a kitchen sink for a kitchen cabinet monument of a vehicle, a self-regulating valve (6; 70), a control unit, a sensor, and a first signal connection between the sensor and the control unit, wherein an inlet of the self-regulating valve (6; 70) is connected to a first fluid line which is at least indirectly connected to a discharge opening of the kitchen sink, wherein the self-regulating valve (6; 70) is arranged below the discharge opening of the kitchen sink, with the result that fluid from the kitchen sink can flow into the first fluid line through the associated discharge opening, wherein an outlet of the self-regulating valve (6; 70) can be at least indirectly coupled to a vacuum source, and wherein the self-regulating valve (6; 70) is designed to independently open in the case of a predetermined first amount M1 of fluid in the first fluid line, with the result that the self-regulating valve (6; 70) is in an open state and fluid can flow from the first fluid line through the self-regulating valve, and to independently close in the case of a predetermined second amount M2 of fluid in the first fluid line, with the result that the self-regulating valve (6; 70) is in a closed state and the predetermined second amount M2 of fluid remains in the first fluid line as a remaining amount of fluid, wherein the sensor is designed to capture the open state or the closed state of the self-regulating valve (6; 70), wherein the sensor is designed to transmit a sensor signal representing the captured state of the self-regulating valve (6; 70) to the control unit, wherein the control unit is designed to output at least one control signal on the basis of the transmitted sensor signal, characterized in that the self-regulating valve (6; 70) has a non-return valve which has a sealing seat closable by means of a float ball and is configured to prevent a return flow of a fluid from the outlet to the inlet of the self-regulating valve (6; 70), wherein the non-return valve is arranged directly upstream of the outlet.