reversed skirt

[Haj_mohnds]

hi
I have a question about ASME section VIII div 1 UG-32 (j), in this paragraph, A dished head with a reversed skirt is mentioned but I don't get the point, can anybody illustrate the form ???
thanks in advanced

 

[JStephen]

On this site (Pg 141 in the pdf):

https://vdocuments.mx/catalog-of-cerec.html

Not sure what an application would be. I think I've seen oxygen or similar bottles/tanks shaped like that, I supposed just so they have a flat end.
I've seen sandblasting pots that had the top head turned upside down so it formed a funnel to make it easier to get sand in- but they were just F&D heads flipped the other way, not the funky shape shown.

 

[SnTMan]

Hard to see how these are concave to pressure...

The problem with sloppy work is that the supply FAR EXCEEDS the demand