National Pipe Straight Hose Thread (NPSH)

What is National Pipe Straight Hose Thread (NPSH)?

National Pipe Straight Hose Thread (NPSH) meaning in Safety terms is

  • This is a straight (nontapered) thread standard with the same threads per inch as the appropriate size iron pipe thread. It requires a gasket to seal and is the thread standard used by most U.S. industry. Also known as National Pipe Straight Mechanical (NPSM) thread. 

 

reference: Glossary A – Z | National Wildfire Coordinating Group

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