Jinkon Valve · Engineering guide

Control Valve Actuator Selection

A practical checklist for choosing electric or pneumatic actuation for regulating and on-off control valve projects.

Actuator selection should begin with the complete valve operating condition—not just the valve size. A control valve package must generate sufficient force or torque through the required stroke while maintaining the intended control accuracy, shutoff performance and safety position.

For an engineering review: send the control valve data sheet or drawing together with the medium, pressure, temperature, control signal, available power or air supply and requested fail action. This reduces the risk of an actuator that fits mechanically but cannot meet the operating requirement.

1. Define the valve duty before selecting the actuator

Valve operating force

For globe, gate and linear control valves, confirm required thrust through the travel range. For rotary valves, confirm break torque, running torque and seating torque.

Control requirement

Identify on-off open/close service or modulating/regulating service. Modulating projects should state the required signal and positioning accuracy.

Safety position

Specify the required action on loss of air or electrical supply: fail closed, fail open, fail in place, or another approved project condition.

2. Electric vs. pneumatic control valve actuation

Selection pointElectric actuatorPneumatic actuator
Available utilityRequires compatible voltage, wiring and electrical protection.Requires clean, stable instrument air at the specified pressure.
Control signalCommon options include 4–20 mA, 0–10 V, digital commands and feedback outputs.Often paired with a positioner for 4–20 mA control; solenoid valves are used for on-off duty.
Fail actionConfirm whether fail-in-place, battery/energy storage, or another engineered function is required.Spring-return designs can provide fail-open or fail-closed action when air is lost.
Operating dutyCheck duty cycle, starts per hour, heat dissipation and manual override.Check air consumption, cycling rate, positioner and air treatment requirements.

3. Signals, feedback and site integration

For regulating service, state whether the plant uses 4–20 mA, 0–10 V, a fieldbus system or a site-specific protocol. Also specify position feedback, open/close limit switches, local controls, manual override, enclosure rating and cable entry requirements. These details allow the valve, actuator and control system to be quoted as a compatible package.

4. Customer-specified actuator brands

For projects that specify Rotork, AUMA or SAMSON equipment, Jinkon can review the requested actuator model and provide or replace a compatible valve-actuator package subject to engineering confirmation and availability. Send the existing actuator nameplate, mounting interface, required travel, torque or thrust, supply, signal and feedback requirement before selection.

Rotork, AUMA and SAMSON are third-party trademarks. Jinkon is not affiliated with or an authorized distributor for those brands unless expressly confirmed in writing for a specific project.

5. RFQ checklist

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Explore our control valve category, compare general valve actuator options, or send the project details for a technical quotation.

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