The Select Flowmeter has multiple ports, you can leave the cannula, humidifier and nebulizer hooked up to the outlet for easy treatment whenever needed. The housing and flow tube carry a lifetime warranty and the needle valve carries a five (5)year warranty. 

Features:

• Scale: 0-3 LPM
• Increments:
  0.125 LPM from 0.125 to 1 LPM
  0.25 LPM from 1 to 3 LPM
• Accuracy:
  ± 0.15 LPM
• Flush Flow: 20-40 LPM