This European Standard applies to bottom emptying devices on tank wagons used for the carriage of liquid substances of classes 3, 4.1, 4.2, 4.3, 5.1, 5.2, 6.1, 8 and 9 of RID. This European Standard defines the important dimensions for the emptying connections. Where tank wagons are fitted with bottom vapour return devices, these devices shall comply with this European Standard.
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