NPT – National Pipe Thread
The National Pipe Thread (NPT) standard is widely used in the United States, Canada, and other regions for plumbing, hydraulic, and gas connections. Unlike parallel threads, NPT threads are tapered, which allows them to create a tight, leak-proof seal without requiring additional sealing elements like O-rings. NPT is governed by ANSI B1.20.1, with variations including:✔ … Read more