SAE DIN Bubble Inverted Double??

[Neville B]

Hello
Just started to make up the brake pipes on my Tornado and I am trying to figure which are the correct flares

Looking into the 3 way Union the face is concave
The bulkhead fittings are convex
The male & female fittings are concave
Pics attached

I'm thinking these are DIN Bubble flares but the bulkhead fitting looks like it needs a SAE Double Flare

Can anyone help with this please
Thanks

 

[Andy Sheldon]

Neville
Male fittings use a single flare and females use a double flare.
Thanks
Andy

 

[Neville B]

Thanks Andy