Is this a check valve installed on my WH return line???

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by Handiman, Apr 26, 2010.

  1. Handiman

    Handiman New Member

    Messages:
    21
    Location:
    Nevada
    Hello, I'm trying to figure out if I need the check valve already installed on my recirculating pump or not. I can't tell if this (pic) is actually a check valve already installed on my WH return line right above the recirculating pump. If it is, I guess I can remove the check valve that is built in to my recirculating pump.

    Here is the pic: Is this a check valve on the water heater return line?


    [​IMG]
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,824
    Location:
    New England
    I don't know, one of the pros probably will know. But, two check valves, as long as they are both installed for flow the same direction won't hurt things, so I probably wouldn't remove one now that it is together.
  3. shacko

    shacko Master Plumber-Gas Fitter

    Messages:
    561
    Location:
    Rosedale, Md
    That is a check valve. I would not remove it unless I knew for sure what is's there for. Depending on how the piping is run it can have two.
  4. Handiman

    Handiman New Member

    Messages:
    21
    Location:
    Nevada
    Thanks. It was installed on the return line for the WH, right above the recirculating pump. I'm assuming it must be for the recirculating pump, so I'm thinking I might as well remove the little cheap plastic check valve that is installed in my new recirculating pump.
  5. Gary Swart

    Gary Swart In the Trades

    Messages:
    7,309
    Location:
    Yakima WA
    My Laird recirculating system requires a check valve. I can't speak for other brands.
  6. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,309
    Location:
    Cave Creek, Arizona
    It is a check valve, but it could also be a "defective check valve" depending on how old it is. It could have a gate that is either stuck open or closed, or the gate could have worn out and is just lying inside the valve. There is no way to tell other than to open the top, or take the valve out and shake it to see if it still moves.
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