Check valve needed on 2 pipe jet pump?

Discussion in 'Pumps and Tanks Well Forum & Blog. Water is life.' started by Theodore, Sep 9, 2020.

  1. Theodore

    Theodore Member

    Joined:
    Sep 18, 2015
    Location:
    New York
    Does a 2 pipe jet pump (100ft deep, 1.25" and 1" dia pipes) need a check valve on its discharge pipe, in between the pump and a pressure tank?
    I suspect it would do more harm than good.

    Thanks
    Theodore
     
  2. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    I am pretty sure you are right.
     
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  4. valveman

    valveman Cary Austin Staff Member

    Joined:
    Mar 15, 2006
    Occupation:
    Pump Controls Technician
    Location:
    Lubbock, Texas
    Yeah the only check you want is a foot valve at the bottom of the ejector in the well.
     
  5. slowgsr

    slowgsr New Member

    Joined:
    Jan 14, 2018
    Location:
    Ontario Canada
    A few years ago my foot valve or piping on my 2 line jet starting leaking, in itself will only hold 15psi, so I put a check between the pump feed and the pressure switch, keeps my house/tank up to pressure but the pump drop lines pressure quickly drop to 12-15psi or so.

    Been working flawless for a few years, however I'm in the middle of converting my dug well to a submersible since I know sooner then later ill probably loose my prime.
     
  6. Theodore

    Theodore Member

    Joined:
    Sep 18, 2015
    Location:
    New York
    Thanks All.
    Just replaced foot valve AND both hoses going down the well today.
    I suspected the foot valve was leaky, but while pulling up the hoses, we found a pinhole leak in one about 40ft down! So opted to replace both just to be sure. Guy who was doing the bulk of the work with me got confused and asked about a check valve... which confused me too for a moment, hence my post. But it makes sense to avoid another check valve because it could end up needlessly triggering the pump to switch on/off rapidly.
    Thank you again.
    Theodore.
     
    valveman and Reach4 like this.
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