The electromechanical actuators for the Nexus Valve Vivax DN 40 - 50 valves are available in three versions: • AVUE - modulating controlled by 0-10 V DC signal 24 V AC • AVUX - on/off 24 V AC • AVUM - on/off 230 V AC The AVUE actuator has a linear output drive for use in combination with any controller providing a 0-10 V direct current (DC) output signal to operate a Nexus Valve Vivax DN 40 - 50 valve. The AVUX is a 24 V alternating current (AC) modulating linear actuator suitable for modulating a Nexus Valve Vivax valve from any 24 V (AC), 3-point controller or device. The AVUM is a mains voltage (230 V AC) modulating linear actuator to be controlled from any controller or device having a 3-point mains switched output.