Supply Of Multistage Pressure Regulator For Acetylene Gas Cylinders, Class 2 With Inlet Prressure Of 20 Bars And Maximum Flow Of 250 Ltrs./Min. Conforming To Is:6901-2009 Second Revision Iso 2503-1998 With Stainless Steel Diaphragm At 1St Stage And Neoprene Rubber Diaphragam At 2Nd Stage And Inletwith Ceramic Filters- Isi Marked: Similar Toisi Marked Models Goldline 7022 S/A 0-1.5 Of M/S Ador Welding Ltd.Or Dura A-1.5 Of M/S Esabindia Ltd. Isi Marked .