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Thread: How long before air supply becomes insifficient

  1. #1
    Associate Engineer
    Join Date
    Nov 2017

    How long before air supply becomes insifficient

    Hello All,

    Let me start by stating its been years sense I've dealt with fluid mechanics. I'm currently working on a project at work that involves leak testing a pressure vessel. The area in which the test will be done does not have access to shop air. Therefore it will be required to use a portable air tank to pressurize the pressure vessel. I am trying to determine how long it will take before a 200 gallon tank @ 120 PSI (This is what we have available to tow around) becomes insufficient to supply the pressure vessel through roughly 13 feet of 4 inch ductwork with 35psi of air regulated by means of an in line pressure regulator, knowing that the vessel has a leak of 4.0 GPM. (This is a rough estimate of what is to be our max allowable leakage) Any input is appreciated.

    Thank you

  2. #2
    Associate Engineer
    Join Date
    Nov 2016

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