Has anyone ever seen a M18-1.5 Male (Asia tank) to 7/8-14 Female (Standard SCBA tank) adapter? I found M18-1.5 Female to 7/8-14 Male adapters but not the reverse. This would allow one to use an SCBA valve of their choice with a CGA 347 connection.
Have you looked for a 7/8-14 female to 7/8-14 male adapter to mate the two SAE pieces to end up with the end you desire? Sometimes an adapter needs an adapter for it's adapter to fit the new adapter!