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  1. BigSerg

    Torque Testing / Gear Operator Ratio Question

    @ LittleInch...You got it right on the money sir...Thank you very much. Now, if my gear ratio is 4.33:1 and I'm able to measure the amount of torque required to turn the handwheel on the gear, what formula will I use to calculate the break torque at the stem? Thanks.
  2. BigSerg

    Torque Testing / Gear Operator Ratio Question

    Hello All, I have a 12" 900# Slab Gate Valve that I intend to perform a differential pressure torque test on. During the torque test, the valve will be equipped with a gear operator and pressurized on one side to the Maximum Operating Pressure (2160 psig). I have rigged up a fitting to be able...
  3. BigSerg

    Valves: Differential Pressure Torque Test / Gear Ratio Question

    Hello All, I have a 12" 900# Slab Gate Valve that I intend to perform a differential pressure torque test on. During the torque test, the valve will be equipped with a gear operator and pressurized on one side to the Maximum Operating Pressure (2160 psig). I have rigged up a fitting to be able...

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