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Hot/cold fluid isolation valve

DC CAFC
  • US 7,631,662 B2
  • Filed: 10/30/2007
  • Issued: 12/15/2009
  • Est. Priority Date: 09/23/2003
  • Status: Active Grant
First Claim
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1. A fluid isolation valve comprising:

  • a valve body having a first fluid flow path, a second fluid flow path, a fluid drain path, a hot water relief path and a pressure relief valve in communication with said hot water relief path; and

    at least one flow diversion device configurable between a first configuration and a second configuration, such that when the flow diversion device is in the first configuration the first fluid flow path is communicated with the second fluid flow path and the hot water relief path, and when the flow diversion device is in the second configuration, the first fluid flow path is communicated with the fluid drain path and the hot water relief path.

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