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  1. LongArmJim

    Consistent Mechanical Seal Failure on Armstrong 4300 pump

    Wow! Sorry for the lack of response on my end, I was away for a little and put work to the side! @quadtracker- yes, these armstrong couplings will not touch, they are tightened to spec evenly and measured with a feeler gauge for the an equal gap. And i just had a situation with one that was not...
  2. LongArmJim

    Consistent Mechanical Seal Failure on Armstrong 4300 pump

    Thanks Rputvin I may have to send out the next one and see what is going on. They run monday-friday for about 10 hours when the Co-Gen plant is running, only one pump at a time. I think they are on a daily alternation schedule. I agree that any contaminants on the seal face would result in...
  3. LongArmJim

    Consistent Mechanical Seal Failure on Armstrong 4300 pump

    Hello, I am a tech for a pump motor and controls company in ny and have been having issues with one set of pumps. The pumps (2) in question is an vertical Armstrong 6x6x11.5 4300 series being driven by a 25hp 1800 RPM electric motor on VFD. There is an aluminum coupling with keys between the...

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