This European Standard specifies requirements on and characteristics of bottom emptying devices on tank wagons used for the carriage of liquid substances of RID. This European Standard specifies the important dimensions of connection devices for the emptying. This European Standard is applicable to bottom vapour return devices that are fitted to tank wagons.
BS EN 12561-2:2003 history
2011BS EN 12561-2:2011 Railway applications. Tank wagons. Bottom emptying devices for liquid products including vapour return
2003BS EN 12561-2:2002 Railway applications - Tank wagons - Bottom emptying devices for liquid products including vapour return