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  1. AmyDesrochiers

    Valve & Pipe Flow Stoppage Problem

    Big Inch: I read your website, it's so interesting. You are very dedicated to explain about pigging operations. I tried to look at the map, map doesn't exist anymore. That is too bad for folks wanted to learn. Do you have another link where I can look at the Pipeline Network in U.S.A. and World.
  2. AmyDesrochiers

    Valve & Pipe Flow Stoppage Problem

    Thank you very much for your analysis. I agree with you about the tie-ins of the 4" line.
  3. AmyDesrochiers

    Valve & Pipe Flow Stoppage Problem

    We suspect a line is not capable of flowing its full capacity due to the above ground piping, we have a few pictures but can't share here. Line is an 8" line and open N/Gas flow through the 4" but we do not know how the 4" above ground piping is tied in. We do not understand why when the valve...

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