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Heavy-Duty reversing actuators NEMA 4 and/or 7

Featured Product from Indelac Controls, Inc.

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Product Data Sheet


The SR & SX series NEMA 4 and/or 7 rotary electric actuator was designed solely for applications within the 200 lb × in (model SR) and 300 lb × in (model SX) torque range used in hazardous locations. These heavy-duty reversing actuators can be used in place of model SD and SDX when the area requires enclosure rating of Class I Groups C & D or Class II Groups E, F & G div. I and II. They can also be used when optional equipment such as 4-20mA control, timers and speed control are required. These compact actuators are equipped with spur gear drive and, as in all ICI actuators, can withstand stall conditions without suffering gear failure. The heavy-duty sand-cast aluminum enclosure meets NEMA 4 and/or 7 specifications and has a thermally bonded ultraviolet resistant polyester powder coating that not only enhances its appearance but also is a tough corrosion resistant coating.
Standard equipment includes 115Vac-1ph motor with thermal overload protection, two limit switches wired for light indication, stainless steel fasteners, 300 series stainless steel output drive and spring friction brake.

Quarter Turn Electric Actuators
Quarter-turn electric actuators use electrical energy to open, close, or throttle valves that require highly accurate positioning. They are designed to automate the precise operation of valves that open and close through a rotary 90° motion (a quarter turn), such as ball valves, plug valves, choke valves, dump valves, and butterfly valves. Rotary quarter-turn actuators can also be used to automate dampers to regulate the flow of air in chimneys and air-handling equipment for the HVAC industry.
These actuators can be equipped with either an AC or DC voltage electric motor capable of delivering a wide range of torques for automated and responsive valve positioning without the complexity and cost of a pneumatic supply. Their compact design and relatively light weight are ideal for situations where installation space is limited, enabling additional clearance for alternative piping options.

ICI’s Quarter-Turn Electric Actuators
Quarter-turn electric actuators from Indelac Controls Inc. (ICI) are designed and constructed from carefully selected materials to suit various operating conditions. All internal mechanical and electrical components are housed in NEMA 4 enclosures for adequate protection against incidental contact with water and dirt. Our actuators are also available in NEMA 4X-compliant and NEMA 7-compliant enclosures for safe and efficient operation in highly corrosive, ignitable, or explosive environments.

Our diverse line of quarter-turn electric actuators can meet a variety of situations. For example, the R Series and RXP Series electric actuators rotate from 0° to 90° in 2.5 seconds. Models also deliver torque from 100 to 27,300 inch pounds to meet any specific application demands, whether your requirements are simple or heavy duty.

Quarter-turn electric actuators from ICI are available in both AC and DC voltages, and feature 10 available power options, including 12Vdc, 24Vdc, standard 115Vac, and 230Vac.

For enhanced corrosion protection in aggressive environments, we also offer optional coatings such as anodic films, epoxy coatings, electroless nickel plating, and chromium conversion coatings for additional passivation and barrier protection.

Most of ICI’s quarter-turn actuators are designed to comply with ISO 5211:2017: Standard for Industrial Valves - Part-turn Actuator Attachments guidelines. Our direct-mounted actuators are among the most versatile on the market and have the added benefit of saving our clients space as well as cost.

At ICI we pride ourselves on the quality of our products. Our company has built a reputation as an industry leader in quarter-turn electric actuators by providing a wide range of standard features and benefits, including:

  • Heavy-duty steel gears specifically hobbed for reduced wear
  • Permanent lubrication
  • Open/close limit switches for independent calibration of open/close positions
  • Reversing motors designed explicitly for valve and damper automationPolyester Powder coatings for additional protection against aggressive corrosion/UV degradation
  • Numbered terminal strips for easy field wiring
  • Thermal overload protection


Each actuator in our product line offers the highest standard of quality in terms of performance and build quality. We also offer further customization options for specialized applications. Some available options include, but are not limited to:

  • Modulation control
  • Speed controllers
  • Timers
  • Mechanical stops
  • Position feedback for modulating and open/close configurations
  • Visual position feedback for L-Port & T-Port valve configurations
  • Motor brakes
  • Declutching manual override with hand wheel (hand wheel available on M-Series and up)
  • Heater and thermostat
  • Breather options
  • Various powder coating color options
  • Remote / Off / Local control
  • Local 4-20mA control
  • Battery backup
  • Various mounting options


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Watch>>Indelac Controls, Inc. Company Overview

Indelac Controls, Inc. (ICI)
Indelac Controls, Inc. (ICI) manufacturers a full line of quarter turn rotary electric actuators used for valve and damper automation. Founded in 1986, Indelac was incorporated as an “S” corporation on November 30, 1987. ICI takes pride in being a family owned and operated electric actuator manufacturer for over 32 years. All of ICI’s production is based in Northern Kentucky, though you can find our products in all 50 U.S. states and on 6 continents around the world. At Indelac, we are one big motivated family, and our family is dedicated to advancing the technology we use, along with our employees'expertise in a constant effort to better serve our customers'automation requirements. Our upgraded facility continues to utilize state-of-the-art machinery throughout the manufacturing process assuring the highest possible quality using American made products. Indelac's main goal as an electric actuator manufacturer is to design, develop, and manufacture a high quality electric actuator at a competitive price, while maintaining on-time delivery. ICI’s product line consists of electric actuators with torques ranging from 100 lb-in output torque through 27,300 lb-in output torque, as well as offering an array of controls for ordinary on/off controls, to sophisticated process control applications.