Imedical Healthcare Solutions
The Ferno 900 ORO2 Flow Control Valve (#0819583) is a more "low-profile" flow control gauge compatible with the Ferno oxygen administrators, including the Mini-Manager and Multi-Manager O2 Administrators.
Warranty: 1 Year. 
This model of control valve has a DISS Male outlet and offer 12 flow settings with plus or minus 10% accuracy. The 12 settings are Off, 1/4, 1/2, 1, 2, 3, 4, 6, 8, 10, 15, and 25 liters per minute (LPM).