Expansion relief header for protecting heat transfer coils in HVAC systems
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United States of America Patent
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Sep 20, 2016
Grant Date -
May 22, 2014
app pub date -
Nov 4, 2013
filing date -
Nov 19, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
An expansion relief header is disclosed for use in an HVAC heat transfer coil. The expansion relief header includes a main body adapted to be secured to bends in fluid coils of the HVAC fluid tube system. The main body includes holes in alignment with holes formed in the bends to enable fluid to pass from the bends into the expansion relief header. The expansion relief headers include one or more relief devices, such as valves, that automatically open, preferably in response to pressure exceeding a predetermined threshold value or temperature falling below a predetermined value, to release fluid from the expansion relief header and then reseat themselves.
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