Light duty actuator for fail-safe applications.

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Model ES2 Electric Actuator
Model ES2 is a light duty actuator designed for fail-safe applications. For best life expectancy it is recommended that model ES2 be powered in both clockwise (CW) and counter clockwise (CCW) directions. If used in this manner one can expect over 2,000 open/close cycles. When allowed to spring to the fail position as the normal model of operation, the life of the actuator is severely shortened. ES2 has a spring end torque of 200 in-lb with a closing speed of 3 sec./90° upon loss of power. This actuator is ideally suited for ball valves and dampers with torque ratings of up to 145 in-lb.
Standard equipment includes 115Vac-1ph 25% duty cycle motor with thermal overload protection, set to fail closed (CW rotation) upon loss of power, two limit switches, power on brake, stainless steel fasteners, 300 series stainless steel output drive, polyester powder coating.

Spring Return Electric Actuators
Fail-Safe Spring Return Electric Actuators
Fail-safe spring return electric actuators – more simply known as spring return electric actuators – are used on linear and rotary valves in a range of applications across nearly all industrial process systems. These types of actuators are used in situations that require valves to automatically and immediately enter a safe position upon loss of power. Upon restoration of power, the actuator immediately returns the valve to its normal operating position, and is ready to resume normal operation.
When energized, the valve actuators move the valve to its operating position while opposing the motion of a spring mechanism. This action compresses the spring, causing a buildup of potential energy. When the system is de-energized – such as in a power failure event – the potential energy from the spring is released, and the valve is snapped into its fail position. The actuators fail position can be either the fully open position or the fully closed position only.

  • Fail-open: The valve’s operating position is closed. Upon loss of power the actuator springs the valve to the fully open position.
  • Fail-closed: The valve’s operating position is anywhere in the open range. Upon loss of power the actuator springs the valve to the fully closed position.

ICI’s Spring Return Electric Actuators
Spring return electric actuators from Indelac Controls Inc. (ICI) are specially designed for fail-safe applications using quarter-turn valves and dampers. Our spring return electric actuators are equipped with a hardened steel spur and helical gear drive train to guarantee reliable protection against catastrophic process failure during loss of the electricity to the system. Internal components are permanently lubricated at our manufacturing facilities, ensuring high efficiencies between moving parts, minimal routine maintenance, and quiet operation throughout the life of the actuator.
All standard equipment is enclosed in a heavy-duty aluminum enclosure with a thermally bonded ultraviolet resistant polyester powder coating to comply with NEMA 4 requirements for protection against ingress of water, dust, and dirt. Optional enclosures are available to meet or exceed the NEMA 4X and NEMA 7 specifications for safe and efficient operation in corrosive, ignitable, or explosive environments. Epoxy coatings are available to protect against caustic wash-downs, additional coating options are available upon request.
To ensure compatibility with a wide range of applications, ICI’s spring return actuators are available in six different models with various specifications and end torque capabilities (up to a maximum of 1,200 inch pounds).
Unlike pneumatic spring return actuators, spring return electric actuators must be powered to the open position and powered to the closed position during normal operation to maximize the life of the product. The spring return fail safe functionality is for use during power failure only.
Our actuator units have been designed to provide accurate control and reliable fail-safe automation capabilities while also striking a balance between cost-effectiveness and durability.

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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.