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  1. rcontractor

    Pressurized Air Bottle release rate

    Hello, I am looking to do a simple calculation. I have an air bottle, pressurized to 3000psi, and am going to draw 80psi @ 0.5 cfm from it. I need to know how long this bottle is going to last. Its been a while, so I am drawing a blank. Any help would be appreciated. Thank you
  2. rcontractor

    Go, No Go gage tolerances

    Hello, As of this point, I found literature stating that the tolerance of a Go or No-Go gage must be no more than 1/10th of the total tolerance for that dimension. Is this a standard? Or should I also be accounting for the material used for the part, the gage, etc. Also, Class XX, X, Y and Z...
  3. rcontractor

    I need a "Flow Switch"

    Hello all, I am looking for a method to determine whether fluid (most probably water) is flowing/being pumped from a remote location. Perhaps a switch or sensor that activates a current once flow is detected. It needs to be -small -inexpensive -withstand about 2000psi Perhaps someone can point...
  4. rcontractor

    Rupture Disc Application?

    I am looking into using a rupture disc in a simple system (1/8" Stainless Steel tubing) to protect a very expensive pressure transducer. For expample, the guage is used upto 300psi, but it will break at 330, and so i need the rupture disc to go off if the pressure gets to about 320psi but...

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