Abstract: A syrup delivery system delivers flavored syrup. A solenoid introduces air into the system and into an inlet of an exhaust diverter including a flexible diaphragm. The air exits the exhaust diverter through an outlet for entry into a syrup valve that dispenses the syrup. After dispensing of the syrup, the solenoid blocks air from entering the system. The air from the syrup valve reenters the exhaust diverter through the outlet. The air exits the exhaust diverter through the contaminated air exhaust. The air pushes on the flexible diaphragm, which contacts a seating surface around the inlet, preventing the air from exiting the exhaust diverter through the inlet. The remaining air in the system passes into the expansion tank and is diffused, causing any contaminates in the air to fall to the bottom of the expansion tank. The exhaust air is also subjected to a turbulent air flow path in the expansion tank that further separate any contaminants from the air.

Abstract: A syrup delivery system delivers flavored syrup. A solenoid introduces air into the system and into an inlet of an exhaust diverter including a flexible diaphragm. The air exits the exhaust diverter through an outlet for entry into a syrup valve that dispenses the syrup. After dispensing of the syrup, the solenoid blocks air from entering the system. The air from the syrup valve reenters the exhaust diverter through the outlet. The air exits the exhaust diverter through the contaminated air exhaust. The air pushes on the flexible diaphragm, which contacts a seating surface around the inlet, preventing the air from exiting the exhaust diverter through the inlet. The remaining air in the system passes into the expansion tank and is diffused, causing any contaminates in the air to fall to the bottom of the expansion tank. The exhaust air is also subjected to a turbulent air flow path in the expansion tank that further separate any contaminants from the air.

Abstract: An oxygen management device adapted to mount on a post on a compressed oxygen cylinder. The device includes a manifold block which is attached to the oxygen cylinder post. A pressure regulator is mounted directly on and is integral with the manifold block for reducing the oxygen pressure to a desired level. The manifold block also mounts an overpressure relief valve, a solenoid operated flow control valve, a bypass valve, a continuous flow restrictor and a pressure gauge. The manifold and the components mounted thereon, a control circuit and a battery for operating the control circuit are mounted in an annular housing which has a central opening for receiving the oxygen cylinder post. The control circuit senses when a patient inhales in a nasal cannula and opens the flow control valve to deliver a predetermined dose of oxygen to the nasal cannula at the beginning of inhalation.