Part-Turn Electric Valve Actuator

Electric actuation for part-turn valves

A part-turn electric actuator converts electrical power into controlled rotary movement. It is used where the valve or damper needs a limited angle of travel rather than multiple output revolutions. Ball and butterfly valves are common applications, but the required travel and mounting arrangement must be checked for the actual valve.

Output and operating-time reference

The published range includes maximum output torque values from 50 to 2,600 Nm. The table below lists the corresponding operating time and motor power for reference. These values describe different configurations; they are not adjustable settings available on every actuator.

Use this table to identify a starting point for an enquiry. Confirm the final datasheet, travel angle, supply, duty and mounting dimensions for the proposed configuration. Motor power alone does not establish the valve load the actuator can handle.

Match the actuator to the valve load

Request the valve's starting, running and seating torque at the intended pressure, temperature and medium. The selected output and torque settings must meet the required load without exceeding the valve's allowable limits. Nominal pipe size alone is not a sizing method.

• State the required travel angle and opening and closing times.
• Provide the mounting pattern, shaft dimensions and coupling details.
• Allow space for wiring, maintenance access and any specified manual operation.

Specify the control duty

On-off service and repeated intermediate positioning create different operating demands. Include the supply voltage, phase and frequency, expected starts or movements per hour, command signal and required feedback. Define the response to power or signal loss; automatic return must be explicitly confirmed for the proposed arrangement.

Prepare the installation information

Send the valve identification, load data, mounting drawing and installation environment with your enquiry. Where enclosure protection or hazardous-area approval is required, state the exact requirement and request applicable evidence for the selected unit. A photograph does not establish an approval or rating.

Review the actuator sizing checklist and on-off versus modulating control, or return to part-turn electric actuators. Ask for current dimensions and wiring information before installation.

Control and feedback configurations

The compact part-turn range includes different wiring and control arrangements. Identify the required function before requesting the electrical diagram; terminal assignments and supply details vary by configuration.