The CML series pneumatic actuator system is composed of an actuator and a manual override integrated into a steel housing which is portable. This rugged construction guarantees continuous operation in harsh environments, for example in power stations, steel industries, petrochemical plants or desert areas etc. This actuator provides small to medium torque (up to 100 daNm) for angular control of dampers, butterfly valves, speed variators, radial vanes etc. Manual operation is by a clutchable lever, equipped with a mechanical system. This system allows the movement of the actuator through an external lever and locks it in the required position.