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backflow

  1. General Plumbing Discussion
    Do I need a backflow preventer to install aNSF drinking water certfied chemical in residential ( mainly private wells ) ? This product eliminates "rotten egg" smell
  2. General Plumbing Discussion
    Is it overkill to install a Pressure Reducing Valve AND and a Dual Check Valve in the same line? Or can the Dual Check be removed, the Pressure Reducing Valve installed in place of it. Given that some homes are required Dual Checks by authorization of local backflow prevention programs...
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