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  • Users: NGLENGR
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  1. NGLENGR

    Pumped fluid effect on rotordynamics of API BB3 pump

    I have six United 4x11 MSN 10-stage pumps running a variety of light hydrocarbon products, ranging from ethane down to gasoline. The most common product is "Y-grade" which has ~45% ethane, ~25% propane, ~18% butanes, and the balance is natural gasolines. I've found that these pumps are...
  2. NGLENGR

    Decoupling Capacitor to add delay in relay circuit

    I have a simple relay control system on a machine. A local switch is driven by a 120VAC supply. It appears that this switch sees small transients which can cause it to trip the relay it feeds and cause the machine to trip out. My question is: How do I size/spec a decoupling capacitor to add...

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