Backflow prevention and method of manufacture

  • US 8,997,772 B2
  • Filed: 04/21/2011
  • Issued: 04/07/2015
  • Est. Priority Date: 09/07/2010
  • Status: Active Grant
First Claim
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1. A method of manufacturing a backflow prevention assembly comprising the steps of:

  • receiving a measured length of an existing backflow prevention assembly between a fluid supply conduit to a fluid exit conduit, wherein the existing backflow prevention assembly includes an inlet shut-off valve, a backflow prevention valve, and an outlet shut-off valve;

    receiving a footprint length of the existing backflow prevention valve,obtaining a replacement backflow prevention valve having a valve housing including a valve inlet end and a valve outlet end, the replacement backflow prevention valve having a length different than the existing backflow prevention valve;

    obtaining an inlet shut-off valve and an outlet shut-off valve;

    securing the backflow prevention valve between the outlet shut-off valve and inlet shut-off valve, wherein the backflow prevention valve extends between the inlet shut-off valve and outlet shut-off valve, such that a length between the outlet shut-off valve and the inlet shut-off valve is equal to the footprint length of the existing backflow prevention valve;

    ,obtaining certification of the replacement backflow prevention assembly, including the replacement backflow prevention valve, the inlet shut-off valve, and the outlet shut-off valve by a certifying authority; and

    providing an entire certified replacement backflow prevention assembly, including the replacement backflow prevention valve, the inlet shut-off valve, and outlet shut-off valve to a replacement site, wherein the existing backflow prevention assembly is installed.

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