Multi Pressure Regulator For Oxygen Gas Cylinders,Class3 With Inlet Press Ure Of 230 Bars& Maximum Flow Of 1000 Ltrs./Min. Conforming To Is:6901-2009 (Second Revision) With Stainless Steeldiaphragm At 1St Stage & Neoprene Rubber Diaphragm At 2 Nd Stage & Inlet With Ceramic Filters Isi Marked [ Warranty Period: 30 Months After The Date Of Delivery ] ]