The standard Medical Air Flowmeter is suitable for use in a broad range of respiratory therapy applications and provides accurate flow measurement and control within a range of 0-15 liters per minute. The flow tube includes a floating ball and graduated scale for flow measurements with a supply pressure of 50 psi. The flowmeter includes the connecting adaptor to match the supply outlets being used (standard available selections are listed below) and a tubing nipple connection at the bottom.