This guide helps buyers compare Rotork and AUMA electric actuator requests before sending an RFQ. It is not a universal ranking of one brand over the other. The practical choice usually depends on the installed valve, required movement, torque, duty, control package, site standard and documentation available from the end user.
Quick procurement view
| RFQ point | Rotork request | AUMA request |
|---|---|---|
| Common discussion | IQ, IQT, CK and related electric actuator or gearbox packages. | SA multi-turn actuators, SQ part-turn actuators, AC controls and related gearboxes. |
| Valve movement | Confirm whether the valve needs multi-turn, part-turn or a gearbox arrangement. | SA is commonly discussed for multi-turn duties; SQ is commonly discussed for part-turn duties. |
| Controls | Check power supply, local control, feedback, network or protocol requirements. | Check whether simple open-close control or an AC control package is required. |
| Replacement risk | Nameplate and wiring details matter when matching an installed Rotork actuator. | Actuator and control unit nameplates should both be checked when replacing AUMA equipment. |
When Rotork may be the clearer path
Rotork is often requested when the site already uses Rotork IQ, IQT, CK or related actuator ranges and wants a similar replacement, spare or documentation review. Rotork official material describes its IQ intelligent electric actuator range and related product families for valve automation applications.
When AUMA may be the clearer path
AUMA is often requested when the installed base uses SA, SQ, AC controls or AUMA gearbox combinations. Official AUMA product pages describe SA as a multi-turn actuator family and SQ as a part-turn actuator family, so the valve movement should be checked first.
Information to send with the RFQ
- Brand, model code and full nameplate photo.
- Valve type, valve size, required torque and safety factor if known.
- Power supply, control signal, duty type and operating time.
- Mounting interface, handwheel orientation, enclosure and environment.
- Quantity, target documents, certificate needs and delivery destination.
Related JSSS Nova pages
For brand-specific support, review Rotork electric actuators and spare parts and AUMA electric actuators and gearboxes. For broader sourcing, see Electric Actuators or send details through the RFQ page.
Source notes
Technical wording was checked against official public pages from Rotork and AUMA. Final sizing and interchangeability should be verified against current datasheets, valve data and project requirements.
FAQ
Can Rotork and AUMA actuators be directly interchanged?
Sometimes a replacement can be reviewed, but direct interchange should not be assumed. Mounting, torque, controls, wiring and duty must be checked.
Is SA the same type of actuator as SQ?
No. SA is commonly used in multi-turn discussions, while SQ is commonly used in part-turn discussions. The valve movement decides the starting point.
Do you need the old actuator nameplate?
Yes. A clear nameplate photo is one of the fastest ways to reduce mistakes in a replacement RFQ.
Can Shengshi help if the model is incomplete?
Shengshi can review partial model codes, photos and application details, but exact confirmation may require additional documents.