The Model ES2 is a light-duty quarter-turn electric actuator for fail-safe valve and damper automation, with a spring return torque of 200 in-lb (22.6 Nm). It operates in 10 seconds electrically and returns in 2 seconds via spring. The 115V AC motor has thermal overload protection, a 25% duty cycle, and a power-on brake. Snap-action SPDT limit switches are rated at 15A at 250V AC. It features a visual dome indicator and thermally bonded polyester powder coating. Mounting complies with ISO 5211 F07 and F10 with a 17mm star drive. Operating temperature ranges from -40°F to 150°F (-40°C to 65.6°C), with optional heating for lower temperatures. Weight is 22 lb (10 kg). It meets NEMA 4 standards with optional NEMA 4X, 7, and 9 enclosures. Spring return is for emergency use only; maximum rated cycles are 1,900 for powered open and close.
Model ES@ 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 over load 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.
| Indelac Controls, Inc. | |
|---|---|
| Product Category | Electric Valve Actuators |
| Product Number | Model ES2 |
| Product Name | Spring Return Actuator |
| Valve Motion | Rotary |
| Operation | OnOff |
| Actuation Time | 10 seconds |
| Failsafe | CloseNoPower; OpenNoPower |
| Actuator Torque | 200 In-lbs (231 kg-cm) |
