This standard definesThe dimensions and tolerances forThe male sealing end of inch series pipe couplings, 37° spherical, for aerospace applications.Matched fluid system component shall have a female sealing end in accordance with EN 4550-4
EN 4550-1:2003 history
2014EN 4550-1:2014 Aerospace series - Pipe coupling@ 37�� Design configuration - Inch series - Part 1: Male sealing ends@ spherical
2003EN 4550-1:2003 Aerospace series - Pipe coupling, 37 degree - Design configuration - Inch series - Part 1: Male sealing ends, spherical