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Recent content by arosum

  1. arosum

    Gate Valve Seats from Solid Stellite

    I see that lot of Valve manufacturers use solid stellite 6 seats for sour service Gate valves and majority of the after market seat manufacturers offer cast stellite 6 seats (AMS 5387) but API 6A prohibits the use of castings and clearly ask for wrought products for PSL3 and PSL4 applications...
  2. arosum

    Gate Valve PR2 requirements

    Thanks a lot for your advise. appreciate this quick help.
  3. arosum

    Gate Valve PR2 requirements

    Question on API 6A Gate valve PR2 qualification requirements; if the requirement is to develop just a PR2 Gate valve without the mention of Annex F, does the valve still need to qualify Annex F temperature cycles? or, does it qualify to be sold as PR2 by meeting 200 ambient seat test cycles as...
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