Oxygen Therapy regulators wide range of therapeutic usein hospital, clinics, home care, emergency units & etc. for true reading flowmeter must always be vertical. *Fully chromed *Easy to read dual scale gauge with screw-on polycarbonate lens for durability *Precision engineered pressure compensated esign flowmeter for precise flow *Piston type construction *Flowmeter with easy to read tube and virtually unbreakable transparent polycarbonate outer cover for strength and 360° visibility *Sintered bronze inlet filter. *This design is simple and accurate. Gas Flow: 0-15 Lt/min Max Inlet Pressure: 250 bar Working Pressure: 3.5 bar Always state model number when ordering please inform inlet & outlet connections needed to suit country 1MPa=1000KPa=10.197 kgf/cm2=145.04 PSI 1m3/h=16.67 LPM=35.32 SCFH