DIN 5588-2
DIN 5588-2 Compressed air equipment for rail vehicles; flangeable compressed air devices; mating dimensions and sealing elements for DN 7 devices
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 12/01/1988
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 12/01/1988