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  • Users: Honel
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  1. Honel

    17-7PH Spring Surge Fatigue

    Hello all, I have a question for which there seems to be little guidance. I have a spring in a nozzle check valve that is failing due to what appears to be fatigue in a very short time. A few calculations showed me that the PD pump upstream was pulsing within 6Hz of the surge frequency of the...

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