NPT or national pipe, or National Pipe Tapered, is an American standard defined under the AMSE B1.20.1. The standard outlines the dimensions and tolerances of tapered threads for pipes and fittings. Unlike straight threads, tapered threads give a more reliable seal, especially when used with a sealant material like Teflon tape. The standard is more than a hundred years old and was initially defined for plumbing applications; however, it has seen effective use in hydraulic and gas conveyance as well.
NPT threads are defined by the following features:
- The taper angle is 1°47’ (measured from the center axis of the NPT fitting)
- Flat crests and troughs
- 60O angle between each crest and trough
- The outer diameter of an NPT fitting is measured at the midpoint of the taper
- Pitch (the distance between threads) is measured in threads per inch (TPI)
An MIP fitting is one of two components in heavy-duty, threaded-piping connections. MIP typically stands for Male Iron Pipe (it might also refer to other building materials such as copper or steel). The other component is the FIP, which stands for Female Iron Pipe.
QC Hydraulics is supplying MIP & NPT hydraulic fittings. Please feel free to contact me when you have any demands.
QC Hydraulics can provide hydraulic adapter and hydraulic hose fittings with all kinds of thread, such as JIC, BSP, Metric and so on. Please contact us if you have demand.