What Does Ips Fitting Stand For

National Pipe Tapered (NPT) and Iron Pipe Straight (IPS) are two commonly used thread standards in plumbing. Their nominal sizes can be confusing because the name refers to the internal diameter of the pipe (the bore) rather than the external diameter (often the only part accessible to measure).

What does IPS stand for in piping?

December 3, 2019 Viega. If you trace the history of pipe dimensions, iron pipe size (IPS) is the first to pop up on the industry timeline. But with the rise of copper tubing over the years, another industry standard has emerged: copper tube sizes (CTS).

Can I use NPT with IPS?

IPS (also known as NPSH) is the left circled column, NPT is the right. You can see that the actual outside diameters are very close, and threads-per-inch (TPI) are the same. Does this similarity mean you can get a liquid-tight seal screwing IPS and NPT fittings together? No, absolutely not.