National Pipe Tapered (NPT) is a standard used in the United States for threads on threaded pipes and fittings. Here are some key dimensions related to NPT:
- The taper rate for all NPT threads is 1/16″ per foot or 0.75%.
- The thread pitch, or number of threads per inch, varies depending on the size of the pipe. For example, a 1/4″ NPT pipe will have 18 threads per inch, while a 1″ NPT pipe will have 11.5 threads per inch.
- The outside diameter (OD) of the pipe also varies depending on the size and schedule of the pipe. For example, a 1/2″ NPT pipe with a schedule of 40 will have an OD of 0.840″, while a 1″ NPT pipe with a schedule of 80 will have an OD of 1.315″.
- There are different types of NPT threads, including external male threads, internal female threads, and internal threads for use with a gasket or sealant. It is important to use the correct type of thread for the application to ensure a proper seal.
1 8 National Pipe Tapered Dimensions & Sizes
Type | Common Sizes (inches) | Dimensions |
---|---|---|
NPT | 1/8 | Inner Diameter: 0.34 inches Outer Diameter: 0.54 inches Pitch Diameter: 0.4375 inches Threads per inch: 27 |
Guide to 1 8 National Pipe Tapered: References and Resources
Here are some references to help you dig deeper into the dimensions of 1 8 National Pipe Tapered:
- Engineering Toolbox: This website provides an in-depth explanation of NPT threads, including the dimensions for 1 8 NPT.
- American Alloy Flange: This site has a comprehensive guide to ANSI flange specifications, including information on NPT threads and fittings.
- GlobalSpec: This page has a wealth of information on pipe fittings and port adapters, including details on NPT dimensions and specifications.
By exploring these resources, you can gain a thorough understanding of the dimensions and specifications of 1 8 NPT threads and fittings. This information can be useful in various industries, such as plumbing and construction, where such fittings are commonly used.
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