A sump port drain adapter apparatus is disclosed which provides a small, lightweight vessel to capture and collect gastric reflux or stomach contents exiting the smaller lumen, or sump line, of a double lumen nasogastric tube while providing airflow to the sump line to prevent the nasogastric tube from adhering to the stomach lining. The apparatus disclosed prevents clogging in the sump line, unnecessary patient gown and bedding changes, patient skin breakdown and decreases exposure to potentially infectious material for both the patient and healthcare workers.