This European Standard defines the dimensions and tolerances of female sealing ends for 37o, inch series connection systems for aerospace applications. The connected element of the fluid system must have a male sealing end according to EN 4550- 1.
NF L43-614-4*NF EN 4550-4:2015 Referenced Document
EN 4550-1 Aerospace series - Pipe coupling@ 37�� Design configuration - Inch series - Part 1: Male sealing ends@ spherical
NF L43-614-4*NF EN 4550-4:2015 history
0000 NF L43-614-4:2015
2003NF L43-617:2003 Aerospace series - Pipe coupling, 37 o - Design configuration - Inch series - Part 4 : female sealing ends.