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  • Users: wkellen
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  1. wkellen

    Vacuum limitations

    I have a question on vacuum. I have searched every reference I can find on it and can't seem to get what I am looking for. I have a chamber of sorts that is .25 CF. I need to draw it down to as near perfect vacuum as possible. My Vacuum Pump specs are 98.0ACFM and 29.9"HgV. There is a 5"...
  2. wkellen

    Oil sending unit circuit

    I have an old dump truck. It had a mechanical oil pressure gauge. The line busted and sprayed oil on the exhaust. The resulting fire is something I want to avoid in the future. I bought an electronic gauge that came with a sending unit. It was a cheap gauge, so when it worked a few times and...
  3. wkellen

    heat transfer of sorts

    Hello all, I need to calculate water out temperature. What I know: Water Temperature in = 70 degrees F Size of drilled hole through a block = .242" diameter Pressure of water at inlet = 100 PSI Temperature of block = 500 degrees F Length of block = 5.542" Opening in opposite side of block is...

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