hot water recirc loop

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by shineer, Sep 29, 2005.

  1. shineer

    shineer New Member

    Joined:
    Sep 29, 2005
    installed a gravity hot water recirc loop and now it seems my hot water supply runs out much faster than it used to. I have the pipe insulated, it is 3/4 inch all the way back to heater. do I need to install a check valve, or what? The hot water comes almost instant but runs out too quick. can anyone help? Thank you.
     
  2. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    pipe

    Without a check valve at the heater, the cold water in the bottom of the tank will backflow and give you cold or cool water at the faucet.
     
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  4. shineer

    shineer New Member

    Joined:
    Sep 29, 2005
    installed check valve at heater, everything ok now, thanks.
     
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