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Thread: IPS Versus NPT Pipe Thread Standards: What Is the Difference?

  1. #1
    Associate Engineer
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    IPS Versus NPT Pipe Thread Standards: What Is the Difference?

    IPS Versus NPT Pipe Thread Standards: What Is the Difference?


    What is the difference between IPS and NPT threads?
    Last edited by TomBrook11232; 01-15-2017 at 06:58 PM.

  2. #2
    Administrator Kelly Bramble's Avatar
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    IPS is Iron Pipe Straight thread. It's meant to seal on a washer (like the threads the hose for your toilet or faucets attach to). NPT is a tapered thread, designed to seal on the threads, which is why you put pipe tape on them - to lubricate them and help the threads deform and create a seal.

    IPS threads are also a generic name for NPSH or NPSM Threads " American National Straight Pipe Threads"

    http://www.engineersedge.com/fluid_f...eads_13376.htm
    Tell me and I forget. Teach me and I remember. Involve me and I learn.

  3. #3
    Principle Engineer Cragyon's Avatar
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    IPS is old school

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