Limitorque | Flowserve Limitorque has evolved over almost 90 years since its strategic introduction of a “torque-limiting” design. Today, all heavy-duty electric actuators use some device that “limits the torque” in order to safely operate automated valves and protect people and property. True to its name, Limitorque offers solutions and automation choices for customers with world-class electric and electronic products and an expanded range of fluid power actuators and control systems that provide: