lol this is funny i figured is go with a adapterfitting and i got it to day and cant tell which side is which ahaahha. there really dosent seem to be a diff,now i see why a npt fitting will just screw in thier with ease. but anyway how in the hell do u tell them apart? lol

 

Trial and error?
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote

 

the bspt has closer thread pitch than the npt

 

if its the right fitting the male end is bspt :P