Thanks! Can I get such an adaptor or valve there?In essence yes, but to get you specific advise which continental bottle have you got in mind using?
My 27mm Gaslight adaptor directly fitted one of the French LeCube bottles, that was back in 2017.
The adaptor that married to the pig tail is like this LINK, important with the LeCube was the elevated take off featured here.
Your initial bottle contract comes [ or came] with a regulator, that you don't require.