This silent suction process with = 65dB(A) sound level allows for a comfortable and relaxing experience for the patients due to the high-quality engineering and premium material. Fluid secretion overflow is prevented from entering the pump by the overflow device in case of excess. This will ensure smooth pump operation over the long run. Oil-Free Lubrication Pump In keeping with Control D constant attention to the environment, the suction machine's pump does not emit harmful oil mist for the patient and environmental safety. The air filter is designed to protect the suction pump from contamination in the event of overflow by preventing the overflow from reaching the pump. The suction soft pipe facilitates the proper flow of mucus and secretion from the body cavities to the reservoir of the suction unit while providing protection against leakage or smell.