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  1. jhollin1138

    Reinforced Flathead

    @JStephen: Unfortunately there is only one valve, plus it is a weld-in. Not to mention that if you test "both" valves at the same time, you need to have them both finished at the same time. Then if one of the valves fails, you cannot finish the other valve until it is repaired. BTW, I am...
  2. jhollin1138

    Reinforced Flathead

    Ok, thanks for everyones time. I'll look into going with the dished head vs. the price of a 1-1/2" thk. plate. @waskillywabbit: The thread really doesn't say ribs aren't allowed. It has just as many people saying "yes" as it does saying "no."
  3. jhollin1138

    Reinforced Flathead

    So are you saying it can't be done? I realize I can use a dished head, but why do that when I have plenty of scrape in different thicknesses (no 1-1/2") laying around that I can use. Plus, when I am done with my testing, I can reuse some of flat sections if needed. I have no need for a...
  4. jhollin1138

    Reinforced Flathead

    The company I work for primary product line is the manufacturing of butterfly valves. I need to design a pressure test chamber a hi-performance, zero leakage valve we are currently building. The chamber will consist of a rolled shell and a flathead. The chamber will then be connected to the...
  5. jhollin1138

    Formula for Estimating Damper Valve Leakage Rate

    I would be grateful for any and all help. I am trying to find a formula for estimating damper valve leakage rates. I replaced a gentleman at a small damper valve company that passed away. He didn’t leave me any notes on how to do these calculations. All he left me were answerers. I found...

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