It is an air gap that allows air to escape rather than building up in the pipe and creating an air hammer within the pipes (banging noise), and problems with drainage. (think about pouring out of a can that doesnt have the second hole punched in it.
Suction Therapy : Suction therapy is provided to assist in the removal of bronchial secretions that cannot be expectorated by the patient spontaneously. Suct...
Suction machines are appliances that are used to remove substances such as blood, saliva, mucus, and vomit from a person's airway. A portable suction unit can prevent pulmonary aspiration and facilitate breathing. Suction machine supplies include bacteria filters, collection canisters, and aspirator tubing kits. The medical aspirator prevents fluids and other contaminants from entering and damaging the pump. These accessories will make caring for yourself and your medical suction device more convenient. One popular brand of suction machines is DeVilbiss Medical. The DeVilbiss homecare suction unit works by creating negative pressure to draw fluid out of the body through tubing that connects to a collection bottle. The portable suction device features an adjustable flow regulator that removes fluid from the airway.