Handwheel Rim Pull & Turns Calculator
Estimate handwheel rim pull and quarter-turn operating turns from valve torque, gearbox ratio, efficiency and handwheel diameter.
Open calculator →Valve Torque → Gearbox Rating Calculator
Calculate the minimum required gearbox output torque from valve torque and a chosen application safety factor.
Open calculator →Worm Gear Output Torque Calculator
Estimate worm gearbox output torque from input power, input speed, gear ratio and assumed efficiency.
Open calculator →Worm Gear Ratio & Self-Locking Screen
Calculate worm gear ratio, output speed and estimated output torque, with a transparent theoretical self-locking screen.
Open calculator →Required next step
Validate the result against valve-maker torque data, duty cycle, mounting geometry, environmental requirements and the selected supplier’s published rating.
Prepare a structured RFQ →