The CMV series pneumatic actuator system consists of an actuator and a manual override integrated into a steel housing which is also a portable structure. This rugged construction guarantees continuous operation in harsh environments, for example in power stations, steel industries, petrochemical plants, desert areas, etc. This actuator is able to control final elements like dampers or hydraulic converters with high power actuators. In this actuator, the housing provides a double function of protection and a bearing frame. The engaging of the manual control is made automatically or manually through a dedicated switch.