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  • Users: tuneball
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  1. tuneball

    Broken pump shaft

    Hey guys, I'm trying to determine what might of caused this pump shaft to break. I know by looking at the break, there's signs that can help determine what might of happened. Pump is a Goulds 3405 8x10-17, horizontal split-case pump and the break occurred right at the impeller hub. Pumping clean...
  2. tuneball

    barrier fluid compatible with EPDM

    Does anyone know of a good barrier fluid to use that's compatible EPDM elastomers and at -40C temp. Pumpage is Ethanol. Plan 52. Thanks
  3. tuneball

    API plan 52 - barrier fluid / Inboard faces

    Hi here, when running a plan 52, unpressurised barrier tank, double seal. Is there any chance at all at contaminating the pumpage with the barrier fluid? I would say no as seal chamber pressure is above barrier tank pressure. If the inboard faces fail, pumpage would just leak into the barrier...
  4. tuneball

    Axial Flow pump - Flow / BHP

    Hello, Can someone please explain why BHP decreases as flow increases on a Axial Flow pump curve. Thanks

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