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  1. Jethro31

    Torque Values for NPTF Threads

    Can anyone shed some light on ANSI B1.20.3? I am in the Pressure vessel business and have a customer requesting Torque Specs on NPTF fittings. I am aware of and use rules of thumb for NPT's. I also need defomation and reusability characteristics of these fine pipe threads.
  2. Jethro31

    Large ASME Flagnes

    Thanks everyone for all responses. They were very helpfull!
  3. Jethro31

    Large ASME Flagnes

    I have an application that requires a 30" 150# ASME ANSI B16.5 RFSO Flange. The PV software that I am using is telling me this flange size is not an option. I think otherwise but would like to know for sure before designing a machined slip on flange.

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