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  1. hateMech

    How to calculate IDT? inch dia thickness

    We also use this at my company for tendering and planning purposes. Here's a good reference on estimating: Link Page 124 should be of interest for you, if you think it is worth the money. Even the redacted preview on their website gives you a general idea on the methodology.
  2. hateMech

    System Curve - Multiple Pumps in Common Pipeline

    Have a look at this, particularly pg 5, "Dissimilar Pumps in Parallel": http://documentlibrary.xylemappliedwater.com/wp-content/blogs.dir/22/files/2012/07/TEH-1109A.pdf
  3. hateMech

    Maximum velocity of water and foam mixture in pipes

    I don't know about NFPA, but in Europe, EN 12845 for automatic sprinklers does give a limit of 10 m/s in pipes and 6m/s through valves, flow meters and strainers.
  4. hateMech

    Flow and pressure demand in a combined standpipe and automatic sprinkler firefighting system

    I believe fire fighting design is based on the "area of operation". This is the area where you expect a fire may break out, and the maximum area a fire fighting system is designed for. This implies that your most unfavourable area of operation as described above may not always coincide with...
  5. hateMech

    Sealing Thread

    We really need more info about the application. The more details you give, the better advice you'll get. If it is fine to seal it permanently, why not simply weld it? It should be more that enough for an unpressurized container. You mention contamination, so I'm guessing corrosion might be an...

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