spring return electric actuator Valve
MODEL#: spring return electric actuator ValveBACK TO LIST
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MODEL#: spring return electric actuator Valve
- In additional to the normal function, these actuators are designed to provide fail-safe positioning of valves and dampers upon loss of supply voltage. A mechanical spring set is utilized to position the controlled device to either the fully OPEN or fully CLOSED position without any external power source. A mechanical BUFFER employed at the end of the spring stroke for two-position control units to reduce the dynamic effects of the spring return system. A clutch-less, leverless manual override design provides full-time manual positioning of the controlled device.
- Duty cycle rating:50% (Conform to IEC standard)
- Two-position control
- Temperature:-30℃ ~ +65℃ / -22℉ ~ +149℉
- Humidity:30% ~ 95%
- IP67、NEMA 4X:Water-proof and dust-proof enclosure.
- Material:Dry powder coating aluminum alloy.
- Gear trains have been already lubricated sufficiently with anti-high temperature lubricant at the factory.
- All models have continuous mechanism position indicator on the top of actuator cover.
- Certifications: CE , (Conforming to the test standard of outdoor usage.),RoHS
- Option Items: Space Heater,Heater thermostat,Additional limit switches,Current position transmitter,Floating controller
- standard operating direction: fail clock wise on loss of power
- optional operating direction: fail counter-clock wise on loss of power
- manual override is optional
- potentiometer unit: 1k or 5k
- various voltage: AC/DC 24V,AC110/220V 1-phase , AC 220/380/440V 3phase
- conduit entrance standard: 1/2"NPT , Optional:3/4" NPT M20
- Enclosure: Nylon coating, E.D. coating, Expoxy coating
- Important Notices and Maintenance
- Manual Override After using the manual override for positioning, the user must manually drive the actuator back to its fully-closed position before the actuator restarts. This is a safety feature.
- Check for correct voltage prior to wiring.
- Turn power off before servicing or for maintenance purpose
- Use sealant to seal conduit connections after wiring to prevent dusting or water contamination
- The angle of electric actuator install action must b between 0-180 degree C. Do not install upside down or below the horizontal.
- Not intended for vacuum spaces and avoid installing near explosive atm ospheres.
- Electuator actuators should be placed at clean and dry place for storage, and protected with outer carton from being affected by great temperature difference or serious vibration.
- connect the groud wire to PE inside the electric actuator.
- The warranty period is one year