An electric actuator must be selected for the frequency and type of movement. A unit suitable for occasional open/close service may not be rated for frequent small corrections in a regulating loop.
Describe movement rather than a label
Provide expected starts, running time, control frequency, travel time and ambient conditions. A valve that receives constant small corrections can impose a different thermal and mechanical duty from one that opens twice per shift. Request the offered actuator’s duty classification and limits.
Include torque and endpoint behavior
Compare available output against the valve’s breakaway, running and seating needs. Confirm torque and travel switches, manual override and the way limits are set. Stored-energy fail-safe movement is a specific feature, not an automatic property of electric actuation.
Review the control interface
Specify voltage, frequency, phase, input command and desired position feedback. Confirm enclosure and hazardous-area requirements separately. For modulation, ask about practical positioning behavior and how the actuator handles frequent reversals. Final acceptance should cover the assembled valve and actuator rather than only the motor nameplate.
Practical checklist
- Supply voltage, phase and frequency.
- Expected operating duty and movement frequency.
- Torque envelope and allowable valve loads.
- Command, feedback and failure-response requirements.
Discuss your application
Send the process conditions and required valve function for a configuration review. Request a technical quotation ↗