What does NPS stand for in pipe sizing?

NPS stands for Nominal Pipe Size, which is a standardized measurement used in the piping industry to describe the diameter of a pipe. This term is crucial because it helps in identifying the size of pipes and ensures consistency across various materials and manufacturers. The nominal size does not necessarily refer to the actual diameter of the pipe but serves as a convenient way to categorize pipes based on their dimensions and properties.

In practical use, NPS allows for easier communication among engineers, installers, and suppliers regarding pipe dimensions, fittings, and related equipment. This standardization simplifies the design and construction processes in plumbing, heating, and other fluid handling systems.

Other terms listed, such as "National Pipe Standard" or "Non-Pressure System," do not accurately reflect the globally recognized terminology used in the piping industry. Thus, understanding that NPS specifically means Nominal Pipe Size is essential for anyone working in steamfitting or related fields.