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pressure relief valve
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  1. HVAC
    Our boiler psi has been maxing out at over 30psi. The other day there was water on top of the boiler, but I am unsure where it came from. Others suggested it was the relief valve, but that is on the right side of the boiler and the down pipe drains into a drain. The expansion tank doesn't sound...
  2. Plumbing
    I'm familiar with pressure relief valves on water heaters but I'm looking at the California Plumbing Code 608.2 (http://bulk.resource.org/codes.gov/bsc.ca.gov/gov.ca.bsc.2010.05.html#p145) and it says "An approved expansion tank shall be installed in the cold water distribution piping...
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