- https://www.kegoutlet.com/what-is-mpt-fpt-what-is-npt.html
  MPT identifying the type of pipe thread for an application

  FPT 

  MPT and FPT are both sub-types of NPT

  
  NPT ----- National Pipe Thread (tapered)
  FPT ----- Female Pipe Thread (Interchangeable with NPT)

  MPT ----- Male Pipe Thread (Interchangeable with NPT)