DIN 3945:2002 Non-soldered compression fittings - Straight stud swivel adaptor with 24° cone connectors with O-ring - For design and type of compression end according to DIN EN ISO 8434-1
The document specifies those adapters with 24?nipple which are not covered by DIN EN ISO 8434-4.
DIN 3945:2002 history
2002DIN 3945:2002 Non-soldered compression fittings - Straight stud swivel adaptor with 24° cone connectors with O-ring - For design and type of compression end according to DIN EN ISO 8434-1