Stem Torque & Strength Calculator

Comprehensive stem force, torque, and stress verification for wedge gate valves

Input Parameters

Medium Force FMJ (from seal calc) N

Seal Force FMF (from seal calc) N

Friction Coefficient tanρ

Wedge Half Angle φ °

Stem Diameter dF mm

Design Pressure P MPa

Packing Factor ψ

Packing Depth hT mm

Packing Width bT mm

Stem Thread Min Diameter dFmin mm

Thread Friction Radius RM mm

Stem Nut Bearing Avg Diameter DB mm

Bearing Friction Coefficient μB

[σL] Allowable Tensile Stress MPa

[σY] Allowable Compressive Stress MPa

[τN] Allowable Torsional Stress MPa

[σΣ] Allowable Resultant Stress MPa