We can provide high quality valve with competitive price Oxygen Valve QF-011/ QF-21A 1.Stable in quality 2.Good quality 3.Competitive priceOxygen Valve ModelQF-21A/QF-011NameDiaphragm Type Oxygen ValveMediaOxygen,Air,NitrogenWorking Pressure15MpaNormial Bore2mmOutlet ThreadW21.8×1/14Gas Cylinder ThreadGB8335,PZ19.2 oxygen cylinder valve QF-21A