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  • Users: LongArmJim
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  1. 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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