NPT thread 1/2" female to BSP thread 1/2" male - pipe fitting adapter which will let you convert the NPT Amercian thread to BSP(UK) or G (European) thread. You would need to just screw this adpator to existing male NPT thread and you will end up with BSP standard thread. Product is made from brass.  1/2" thread size;  NPT female thread on one and and BSP male thread on the other end;  Made from brass;