The Group 31 actuator is designed for coupling to small quarter-turn ball and butterfly valves. Its compact in-line design consists of an output section housing the drive train and motor, and a control module section containing the electronics. Together, these two sections provide an enclosure designed to meet Type 4 specifications for protection against corrosion, dust and moisture. A design that meets Type 7 specifications is also available. Torque 15 to 30 lb-ft