Ohmeda Select Flowmeter, Oxygen, 0-15LPM. Maximum flush flow: 70LPM a minute. The Select Flowmeter allows you to direct the output of the flowmeter to any ONE of the three (3) outlet connections. You can deliver a nebulizer treatment without disconnecting the humidifier. The Select Flowmeter has multiple ports, you can leave the cannula, humidifier and nebulizer hooked up to the outlet for easy treatment whenever needed. No more loose tubing lying around waiting to be used for treatments. Simply push the button on the bottom of the unit and rotate the desired port to the large, “ON” arrow for treatment. This shuts off gas from one port and redirects it to the port to which another device is connected. When the optional treatment is finished, simply push the button on the bottom of the unit and rotate the desired port to the large “ON” arrow. The Select Flowmeter combines the durabilty of a metal flowmeter with its DISS male connection along with a tough nylon body. The housing and flow tube carry a lifetime warranty and the needle valve carries a five (5) year warranty. Packaging: 1/Each.