National Pipe Thread (NPT) is a U.S. standard for tapered threads used on threaded pipes and fittings. It is primarily used in plumbing and piping systems to create a tight seal. Here are some key points about NPT: 1. **Tapered Design**: NPT threads are tapered, which means that the diameter of the threads decreases along the length of the pipes. This design allows the threads to create a tighter seal as they are screwed together.
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