An electric actuator must be sized as part of the valve package. Output torque, duty cycle, enclosure, controls and travel time must all match the actual service.
Torque sizing
Use maximum differential pressure and valve seating torque with an appropriate service factor.
Electrical supply
Confirm voltage, phase, frequency, permissible current and local isolation requirements.
Control duty
Define on/off or modulating service, input signal, feedback, starts per hour and required positioning accuracy.
Environment
Specify ambient temperature, weather protection, corrosion conditions and hazardous-area classification where applicable.
Information to include with an enquiry
Provide nominal size, pressure rating, medium, temperature, connection standard, materials, operating method, required testing and project documentation. Greysen will review the duty and confirm the final configuration in the approved data sheet.
