A gate valve gearbox exists to solve one problem large valves need more force to open and close than a person or even an actuator can comfortably supply directly. The gearbox sits between the handwheel (or actuator) and the valve stem, multiplying input effort into usable output force. How the Mechanism Works When you turn the handwheel, internal gearing increases mechanical advantage, converting rotational input into higher torque. Because most gate valves use a threaded ris