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  • Users: Zac H
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  1. Zac H

    Pump/Motor Heat Dissipation

    I have three raw water pumps each driven by 620kW TEWAC induction motors in a pump room that I am trying to determine the heat load for. I know the efficiency of the motors at full load=96%, 75% load=95.9% and 50% load=95.3% but I'm unsure what the actual heat dissipated would be when taking...
  2. Zac H

    Shaft Coupling

    Hi I am trying to design a coupling to connect an extension shaft to an existing shaft. The extension shaft will have a hollowed end section to sleeve over the existing shaft, and the two will be secured with one or more pins or bolts perpendicular to the shafts. I am having trouble sizing the...
  3. Zac H

    Gate Valve Stem Axial Load

    Thanks for the reply, I'll have a read of that resource. It sounds like I was on the right track and it would be incorrect to ignore the friction on the gate in the seated position. I was just unsure of how to go about calculating this force, but I think it should just be a simple friction calc...
  4. Zac H

    Gate Valve Stem Axial Load

    Hi, I am trying to determine the axial (vertical) force that will be experienced by the stem of a gate valve. I know this will comprise the weight of the wedge and shaft, but will there also be a component from the hydrostatic pressure on the closed wedge? When opening the valve from the closed...

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