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  • Users: ITmecheng
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  1. ITmecheng

    ASME Section I - Ligament Efficiency

    Hello everybody, I am trying to calculate the ligament efficiency of a steam drum of a d-type watertube boiler. However I am not sure how to calculate the ligament efficiency in the below marked-up area since the two of the 3" holes are closer to each other than the rest 3" holes. d=77mm...
  2. ITmecheng

    What valve is this?

    Hello, I have this valve which is located on the steam outlet of an old Steam Generator. It looks to me like a Y-type Globe valve (On the P&ID the type of valve is not specified but by older operators it was always called "needle valve). The piping dimension is 8" while the flange rating is...

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