HQ series electric actuator is specially designed for quarter turn operating applications such as Ball,     Butterfly, Plug valves, Dampers and similar usages. - It's variation in wide range of output torque control options fit your specific requirement. - HQ series electric actuator provides high reliability and performance for your automation plan.  - Compact and low weight due to high grade aluminum alloy for housing.  - High corrosion resistance due to hard anodizing on inside & outside and     polyester coating on external surface. - Output torque 4000Nm. - Wide range of voltage available - Self locking with minimum backlash in the transmission - Rugged construction with o-ring system giving water - Handwheel for manual operation engaged by a manual/auto lever arranged for power preference - Easy mounting base standard to ISO5211 - Standard 4 limit switches. 2 for operation, 2 for extra (dry contacts) - Torque switches (except for HQ-008) - LED lamps on indicator monitoring valve position and operation (option) - Space heater with thermostat for preventing overheat - Removable drive bushing with under hung for easy machining and tight connection.