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  1. Mathew Varghese

    Calculation of Stem Packing drag force on API 6A Gate Valve

    Hello Can anyone help me on how to find the Stem Packing drag force on an API 6A gate valve. Also what are the forces to be considered while calculating the torque required to crack open the gate valve. Since the stem has an ACME thread I already have the formula for calculating the torque...

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