DIN 7588:1994 Water-fittings for house installation; boltings with flat seal; one side threaded coupling with inside-thread, on the other side steel tube nozzle, copper tube nozzle or sleeve PN 10
The document specifies measures, materials and design for boltings with flat seal, one side threaded coupling with the inside thread, on the other side steel tube nozzle, copper tube nozzle or sleeve up to working pressure of 10 bar.
DIN 7588:1994 history
2017DIN 7588-1:2017 Valves for domestic water supply PN 10 - Metallic flat sealing unions - Part 1: Design
1994DIN 7588:1994 Water-fittings for house installation; boltings with flat seal; one side threaded coupling with inside-thread, on the other side steel tube nozzle, copper tube nozzle or sleeve PN 10