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Recent content by Hugo G

  1. Hugo G

    API 6D NDE Requirements

    Hi fellow engineers, My company is into some problems due to valves not being API 6D as expected, the final user is willing to consider this deviation as long as we can prove the valves acceptable for this service. They asked us regarding NDE Requirements, it isn't clear to me if such NDE...
  2. Hugo G

    NEMA 4X-7, is group A required?

    Thanks a lot for your answers, I'm asking just to have a better understanding of this matter in order the ask the correct questions to the user and to the equipment's manufacturer. The spec just calls for Enclosure protection as NEMA 4X+7 hence my confusion, I will ask for a more clear...
  3. Hugo G

    NEMA 4X-7, is group A required?

    Hello eng-tips, TOday i come with a small question regarding enclosure certifications: As far as I understand, NEMA 4X+7 is a denomination given for non-hazardous outdoor area (4X) and hazardous indoor Class I, Division 1, Groups A, B, C, or D (7) What isn't clear for me are the groups...
  4. Hugo G

    Trying to determine whether the 17-4 PH valve stem is suitable for -50°F

    Just got answer from mfg and the stem is going to be ASTM A564 GR 630 H1150D, 25 ft-lbs min avg for 3 specimens on CVN at -75F
  5. Hugo G

    Trying to determine whether the 17-4 PH valve stem is suitable for -50°F

    Hello, We're currently working in this order to supply 50 MOVs to a gas production company, their min temperature is -50°F, our valves are from PBV and we've already asked them, however i haven't found any information regarding the temperature range for the 17-4 PH steel, i'd would like to know...

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