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Calculators
›
150LB Plug Valve
›
Plug Head Strength
← 150LB Plug Valve Calculators
Plug Head Strength Calculator
Plug head torsional shear stress verification at normal and 2× torque per Valve Design Manual.
Input Parameters
Driving Torque MF
N·mm
Section Coefficient β
Head Section Thickness a
mm
Head Section Length b
mm
Design Stress Intensity Sm
MPa
Calculate
Results
Section Modulus Ws
mm³
—
Allowable [τN] (normal)
MPa
—
Allowable [τN] (2x torque)
MPa
—
Torsional Stress τN
MPa
—
2x Torque Stress τN1
MPa
—
Max Allowable Torque MF_MAX
N·mm
—
Normal: [τN]₀.₈·Sm ≥ τN
—
2x Torque: [τN]₀.₆·Sm ≥ τN1
—
Overall Pass
—