This is the most powerful actuator series manufactured by AFC. Thanks to the double scotch yoke configuration the actuator is perfectly balanced and easy to move and match to the valve. It is available only in the hydraulic version, it can develop torques up to 1.700.000 Nm and reach less than 4 seconds operating time including time for braking.
A particular Hydraulic dumper system guarantees a rapid and controlled deceleration without sudden shocks thus avoiding water hammer and the resulting excessive pressurization of the cylinder.
It is possible to set the damper’s efficacy and point of insertion during the braking. The hydraulic communication allows the braking to be simultaneous and perfectly balanced in the two cylinders, reducing shock and vibrations.
As for every AFC actuators the part subjected to rubbing/friction are equipped with bearings and chromed surfaces.
Output torque up to 1.700.000 Nm only hydraulic execution
Double scotch yoke design, compact size and balanced weight
Guide bar to absorb lateral load and guarantee extended life
Compact spring cartridge reduce weight and total lenght
Canted or Symmetric design to best adapt to the valve torque
In line travel stop 90° ±4° to eliminate asymmetrical loads
Easily visible local position indicator with Namur interface
Std. temperatures (-30° +100°); low (-60°) and high (+200°) on request
Totally enclosed IP 66 construction; IP 67 and IP 68 on request
Multiple spring design, increased reliability and std. configurations
Suitable for high frequency and high speed operation (< 4 s)
modulation and ON/OFF design to operate in all conditions
Limit switches for remote position indication
Compliant to PED 97/23/EC. and ATEX
Double/single acting (only hydraulic execution)
“Gas over Oil” and “Direct Gas” , execution
Hydraulic override for manual operation.
Fast acting with hydraulic dumper (less then 4 seconds)