Grand Prix 250
Join Date: Jan 2008
Location: Calgary, Alberta Canada
There is a big difference in pipe threads; NPT and BSP are not interchangeable. They might look similar in the smaller diameters but are different enough not to be interchangeable, the pipe diameters are the same regardless of place of origin.
When I was an apprentice back in England in the seventies we had alot of American made machinery that we had to modify to accept BSP fittings etc.