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Pipe coupling including an orifice plate and a rate of flow measuring device

  • US 7,591,192 B2
  • Filed: 07/24/2003
  • Issued: 09/22/2009
  • Est. Priority Date: 07/30/2002
  • Status: Active Grant
First Claim
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1. A pipe coupling flange comprising a central bore, first and second ports for receiving valves, a take-off channel for linking the first port with the central bore, a feed channel for linking the first port with the second port, wherein the second port links with the exterior of the flange.

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