Pneumatic operation
Specify supply pressure, double acting or spring return function, solenoids, position switches, partial-stroke or ESD requirements and control signals.
Electric operation
Specify supply voltage, power frequency, modulating or on/off duty, enclosure rating, hazardous-area needs, local/remote controls and travel time.
Hydraulic operation
Specify available hydraulic power, actuator torque requirement, fail position, operating time and site conditions. Hydraulic automation is especially application-specific.
Mounting and verification
Request opening, running and closing torque, actuator sizing factor, ISO 5211 or project-specific mounting, coupling drawings and a complete control package description.
Frequently asked questions
Can one actuator be selected from valve size alone?
No. Torque and operating conditions are required.
Should an ESD actuator be specified by fail position?
Yes. Provide the required failure response, utilities, timing and control philosophy.