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Pipeline leak detector apparatus and method

  • US 5,072,621 A
  • Filed: 06/25/1990
  • Issued: 12/17/1991
  • Est. Priority Date: 06/25/1990
  • Status: Expired due to Fees
First Claim
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1. Pipeline leak detector apparatus comprising:

  • a liquid containing tank;

    dispenser valve means remote from said tank;

    liquid conduit means connected between the interior of said tank and said dispenser valve means;

    shut-off valve means in said conduit means intermediate said tank and said dispenser valve means;

    pump means coupled in said conduit means on the tank side of said shut-off valve means and configured to apply fluid under pressure to said liquid conduit means and said dispenser valve means; and

    flow meter means connected in said conduit means in parallel with said shut-off valve means, said flow meter means and said shut-off valve means being a parallel combination in series with said pump means, said flow meter means being configured to maintain equal pressure on both sides of said shut-off valve means and to indicate any liquid flow therethrough.

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