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pump is pumping, but water is not flowing

Norm Harvey
Norm Harvey Member Posts: 684
Pictures of your boiler and piping would help tremendously

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Comments

  • glenn_13
    glenn_13 Member Posts: 1
    pump pumps but water is not flowing

    I have a hot water baseboard system with 2 seperate pumps. The pumps swicth on and rotate , however one zone does not appear to have water in it. I have watts pb56 purge valves, and when I rotate it to purge no water or air comes out.It has the slotted screw for the butterfly and I can turn it and still dont get water????
  • Al Gregory
    Al Gregory Member Posts: 260


    Either no water, blockage or frozen
  • Kevin O. Pulver
    Kevin O. Pulver Member Posts: 380
    Don't overlook the obvious

    Maybe the circ is rotating, but not generating enough head to do the job. Half burned out,or ?? Years ago I saw Chrysler car getting hot- 'stat was OK, appeared to have some flow in the radiator as I remember.
    Water pump was turning... on the OUTside anyway. The impeller had cracked on the shaft. It may have been turning a bit, but wasn't doing the job. A new water pump solved the problem. Kevin
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