Why don't you contact the maker (probably Faber / Aqualuung) as they should
be able to tell you of any differences.

If Canada uses the same standards as the US then the other problem could be
that your cylinder neck thread & valves are Metric (as is most of the world)
but the Us still uses the old Imperial (AF sizes I believe).

As they are already matched then it's Ok, but getting servicing or if a
valve is damaged getting a replacement in the US could be an issue (you may
need to import the correct type of valve from Europe, where most are made
anyway.