Amvex (An Ohio Medical Brand) Oxygen Tube Style Flowmeter 5 Year Warranty. Please select options aboveOrder with inlet connectors pre-connected or order separately and assemble yourself. The smallest and lightest chromed brass bodied Flowmeter in the industry Available in 15, 8, 3.5, 1 LPM and 200 CCM Available in Oxygen, Medical Air, Heliox and CO Color coded inner tube and labeling Easy to service No strip "D" shape knob Includes an inlet filter and inlet...