This standard BS EN 4804:2017 Aerospace series. Flange couplings. Swivel flange with 4 fastening holes, in nickel alloy. Inch series is classified in these ICS categories:
49.080 Aerospace fluid systems and components
This standard specifies the characteristics of swivel flanges, 4 holes, for pipe couplings in nickel alloy for inch series aerospace applications. Nominal pressure: up to 21 000 kPa; depends on the associated seal, tube material, tube diameter and tube wall thickness in the assembly (see EN 4814). NOTE Assembly in accordance with TR 4815.
