Rotork Process Controls designs and manufactures high quality, durable actuators designed for trouble-free performance under the most demanding conditions. The SM-1100, SM-1500 and SM-1600 Series are multiturn, rotary actuators, designed to meet the exacting requirements for closed-loop modulating positioning control. They can be applied to valves, metering pumps, hydraulic and pneumatic pressure regulators, dampers, and many more industrial / process control applications where reliable remote positioning control is required. The gearing is totally enclosed, permanently lubricated. The actuator housing may be NEMA 4 Watertight or Explosion proof rated for Class I, Division 1, Groups C, D and dust ignition proof Class II, Division 1, Groups E, F, G


  • Torques from 3.5 to 1,000 (6 to 131 Nm)
  • Rotation 40 degrees to 324 turns
  • Modulating duty: 2,000 starts per hour
  • Manual override option
  • Watertight IP-65 and explosion proof enclosures
  • AC input power (single-phase) or DC input power versions
  • Temperature range from -40 to 150 °F 
    (-40 to 65 °C)
  • FM and CSA certified 

See SM-1100/SM-1500/SM-1600 Literature Pagefor further details.