Where multi-turn actuators output "turns," a linear-stroke actuator outputs thrust and linear displacement, for globe-type control valves and other duties where the stem must travel in a straight line. YEPEF's linear-stroke products are represented by the 2SB351 series (Siemens-technology linear stroke) and the 2SB8 series.

The 2SB8 series is a linear-stroke derivative of the 2SA8 intelligent multi-turn actuators: its control functions follow the 2SA8 lineage, while the output becomes thrust — acting precisely on control commands to deliver remote, centralized, and automatic valve control. The series is dust- and water-proof with a high protection class, suitable not only for power stations but also petrochemical, metallurgy, mining, and public-utility duties.

Three key quantities in linear-stroke selection: thrust (calculated from valve differential pressure and area), stroke (full stem travel), and connection (the transition to the valve yoke). The matching of these three to the valve determines whether the actuator runs smoothly over its life.

For selection and quotation of YEPEF linear-stroke series, feel free to contact us.