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  1. drw7162

    NPTF Gage On NPT?

    I wrote our thread gage supplier an email as to if I could use the nptf on an npt and this was the response: By virtue of the standard these gages are not interchangeable. However the only difference in the design of the gages is their major diameters. The design of the gage is such that the...
  2. drw7162

    NPTF Gage On NPT?

    Thanks, yes I actually had come across that website, but I am also curious why a new gage is needed, does the difference in the thread major and minor diameters cause the nptf gage to stop ahead or after that of the NPT gage? Im looking to have a good explanation for my inspection department...
  3. drw7162

    NPTF Gage On NPT?

    Hi guys, I looked gut couldn't fined the answer in the forum, is it acceptable to inspect a 2" female npt with an NPTF L1 plug gage. I know the basic differnce between an NPT thread and the dryseal thread is only the roots/crest and not the lenght and pitch so is our current gage ok or do we...
  4. drw7162

    steel flat face flange to steel raised flange?

    Just wanted to update everyone on how it went in case someone looks at this thread and wants to know how it worked. I had no leaks at all by doing this, keep in mind my system is working under 50 psi also. Thanks for all the help guys.
  5. drw7162

    steel flat face flange to steel raised flange?

    thanks for the info, here is the gasket i have Aramid/Buna-N Flange Gasket Full Face, rated 1000psi
  6. drw7162

    steel flat face flange to steel raised flange?

    Thanks for the replay, the mating flange to the pump simply says it meets these standards, MSS SP-25, ASTM A105, and ASME B16.5
  7. drw7162

    steel flat face flange to steel raised flange?

    I am putting together a calibration stand and I have a pump with a 3" 150# steel flat faced flange for the suction side and I have a steel raised face flange and gasket to mate to it. Is this ok since its steel to steel or will I be setting myself up for leaks?

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