Here is a brief comparison table between NPT vs MIP fitting that used in piping systems.
|Stand for||National Pipe Tapered threads||National Pipe Tapered threads|
|Known as||ANSI/ASME B1.20.1 pipe threads||Copper or steel fittings|
|Material||PVC, Plastic||Iron, copper, stell, pvc, plastic|
|Application||Residential water & hydraulic systems||Residential, commercial and industrial piping systems|
|NPT Fitting||MIP Fitting|
|Shape||Angle between taper and center axis||Straight|
|Pitch measuring||Threads per inche (TPI)||Threads per inche (TPI)|
|Truncation of roots and crests||Flat||Flat or not|
|High-pressure applications||Not recommended||Recommended|
|Tightening||General tightening standard is recommneded||N/A|
|Compatible||FNPT fittings||FIP fittings|
|Sealant||Sealant compound or PTFE (Polytetrafluoroethylene) tape||Pipe dope or Teflon tape|
MIP and MIP Fitting
MIP stands for Male Iron Pipe that refers to heavy-duty-grade metal pipe systems. A MIP fitting is a metal threaded-piping fitting that can be used with a FIP (female iron pipe) fitting in heavy-duty piping systems for both residential and industrial uses.
NPT and NPT fitting
NPT stands for National Pipe Taper that refers to residential-grade pipe systems. An NPT fitting is a National Pipe Tapered threads fitting that can be used with FNPT (female NPT) fitting in residential water and hydraulic systems.