ISO 11114-2:2013 pdf download.Gas cylinders – Compatibility of cylinder and valve materials with gas contents一Part 2: Non-metallic materials.
This part of ISO 11114 deals with the compatibility of non-metallic materials used for gas cylinders and gas cylinder valves with the gas contents of the cylinder. Compatibility of metallic materials is treated in
ISO 11114-1.
Non-metallic materials are very often used for the construction of gas cylinder valves as seals, e.g. 0-ring, gland packing, seats, or as lubrication products to avoid friction. They are also commonly used to ensure sealing of the valve/cylinder connection. For gas cylinders, they are sometimes used as an internal coating or as a liner for composite materials.
Non-metallic materials not in contact with the gas are not covered by this part of ISO 11114.
This part of ISO 11114 is based on current international experience and knowledge. Some data are derived from experience involving a mixture of the gas concerned with a dilutant, where no data for single component gases were available.
This part of ISO 11114 has been written to be in conformity with the UN Recommendations on the Transport of Dangerous Goods: Model Regulations. When published it will be submitted to the UN Sub Committee of Experts on the Transport of Dangerous Goods with a request that it be included in the Model Regulations. Where there is any conflict between this part of ISO 11114 and any applicable regulation, the regulation always takes precedence.ISO 11114-2 pdf download.