標準號：IS 3224-1979
發布日期：1980/9/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：1.l This standard covers the requirements of material and dimensions of valve fittings for gas cylinders for compressed, liquefied or dissolved gases, other than liquefied petroleum gas ( LPG). It also specifies the dimensions of valving capsules.1.2 Valve fittings for cylinders for use with breathing apparatus are covered in IS : 7302-1974〓.1.3 Valve fittings covered by this standard may also be fitted to cylinders of 5 litre or more water capacity, used with breathing apparatus or with aoacstbetic or analgesic apparatus.Note— Gas cylinders of 5 litre or more water capacity fitted with valve fittings conforming to this standard and used for medical or hospital services shall bear a label showing the name of the gas contained in the cylinder. The cylinder shall be painted externally in the colours specified in Gas Cylinder Rules, 1940, of the Government of India, as amended from time to time. The name or chemical symbol of the gas contained in the cylinder shall be stamped on the cylinder valve. It is recommended that when valve fittings conforming to this standard are fitted to gas cylinders used for medical or hospital service, the valve fittings shall be prefer-ably externally bright chromium plated. ( Gases used for such applications may be oxygen, nitrous oxide, carbon dioxide, ethylene, helium, oxygen/carbon dioxide mixtures, air, oxygen/helium mixtures, etc ).1.4 Valve fittings for liquefied petroleum gas ( LPG ) are not covered in this standard. These are covered in the following standards:IS : 8737 ( Part I )-1979 Specification for valve fittings for use with liquefied petroleum gas ( LPG ) cylinders of more than 5-litre water capacity: Part I Valve fittings for LPG cylinders for replace-ment purposes.IS : 8737 ( Part II )-1978 Specification for valve fittings for use with liquefied petroleum gas ( LPG) cylinders of more than 5-litre water capacity: Part II Valve fittings for newly manufactured LPG cylinders.IS : 8776-1973 Specification for valve fittings for use with liquefied petroleum gas ( LPG ) cylinders up to and including 5-litre water capacity.