"Transferring liquids by means of air pressure on the container or portable tanks is prohibited. This type of transfer may result in an overpressure that could exceed what the container or tank is designed to withstand. In addition, a flammable atmosphere could be created within the container or tank. This atmosphere would be particularly sensitive to ignition because of the increased pressure. Please remember that this is a general overview of flammable and combustible liquids. For more information, refer to 29 CFR 1910.106 as well as NFPA 30 Flammable and Combustible Liquids Code."
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