Oxygen Cylinder D Type 46.7 Ltrs (EMPTY) Water Capacity 46.7 Ltr Gas Capacity 7.00 cum Working pressure 150kg/cm2 at 15o c Test Pressure 250kg/cm2 at 15o c Wall thickness 5.5 mm approx Outside Diameter 232.0 mm Standard IS 7825 part II Valve IS 3224 Statutory certifications ISI Standards, Certified by Dept.