hot water recirc loop

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

  1. shineer

    shineer New Member

    Messages:
    2
    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

    Messages:
    27,247
    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.
  3. shineer

    shineer New Member

    Messages:
    2
    installed check valve at heater, everything ok now, thanks.
Similar Threads: water recirc
Forum Title Date
Plumbing Forum, Professional & DIY Advice Hot Water Recirculation and PRV Nov 27, 2014
Plumbing Forum, Professional & DIY Advice Does grundfos make 230v thermostats for hot water recirculator pumps? Jun 22, 2014
Plumbing Forum, Professional & DIY Advice Hot water at cold tap: questions about recirc pump, sprinklers, and check valves May 5, 2014
Plumbing Forum, Professional & DIY Advice Planning for installation of hot water recirculator May 2, 2014
Plumbing Forum, Professional & DIY Advice Recirculating Hot Water System - Duty Cycle Options Apr 22, 2014

Share This Page