A junction device for administering nebulizer treatments directly to a supply of oxygen supplied to a patient mask includes a supply conduit being couplable to an oxygen supply and a patient mask to allow oxygen from the oxygen supply to be supplied to the patient mask. A side conduit is coupled to and is in fluid communication with the supply conduit. An elbow conduit is rotatably coupled to the side conduit opposite the supply conduit. The elbow conduit is couplable to a nebulizer to permit treatments from the nebulizer to flow through the elbow conduit and the side conduit into the oxygen being supplied to the patient mask. A valve assembly is positioned in the elbow conduit between the side conduit and the nebulizer. The valve assembly opens and closes to control the treatments from the nebulizer to flowing into the elbow conduit.