Hectic week and haven't had a chance to buy them yet. I actually need a male and female QC. And yes, QC to fit ORB. As you stated, may have to pick up standard QC with adapters from ORB to NPT.Just about every fitting imaginable is avaliable. I am still confused what you are actually looking for. Are you looking for the male QC fitting or a female QC fitting? And looking for the QC fitting to thread onto the ORB hose correct? If so, I'd get an ORB>NPT adapter and use the standard QC's. Finding QC's that are ORB isnt impossible, but harder than finding them with the standard NPT fittings, especially in a pinch.
The problem I had at the local store is they had the QC's but no adapters from ORB to NPT
And that is why I would NOT order QC's that fit direct to an ORB fittiing. Get the adapters. Cause it you ever need to replace a QC, it gonna be alot easier to get them in NPT in a in a rush