Select Flowmeter combines the durability of a metal flowmeter with its male connection along with a durable nylon body and allows you to direct the output of the flowmeter to any one of the three outlet connections. With multiple ports, the Select Flowmeter allows you to leave the cannula, humidifier, and nebulizer hooked up to the outlet for easy treatment whenever needed. Nebulizer treatments can be delivered without disconnecting the humidifier.