Oxygen Meter Regulator Overview
An oxygen meter regulator combines a pressure regulator (to reduce cylinder pressure to a safe level, typically 50 PSI for medical use) with a flow meter (to control and display flow rate in liters per minute, LPM). It’s used in:
 
Medical: Oxygen therapy for patients, hospitals, or EMS.
Industrial: Welding, cutting, or aviation.
Specialty: Ozone therapy requiring precise low-flow rates.
 
Key Specifications
Flow Rates:
Standard medical: 0-15 LPM or 0-25 LPM.
Pediatric: 0-3.5 LPM or lower (e.g., 200cc).
Low-flow (e.g., ozone): 1/16 to 3/4 LPM.
 
Connections:
Inlet: CGA-540 (industrial/large tanks) or CGA-870 (medical cylinders).
Outlet: DISS 1240, hose barb, or quick-connect.
 
Flow Meter Types:
Thorpe Tube: Ball-in-tube for precise LPM readings.
Dial Style: Click settings for simplicity, less visual.
 
Materials: Brass (durable) or aluminum (lightweight).