The FD series is identical in design, dimension and torque output to the FS series. Please view FS series page for expanded description of the Flat Yoke actuator.
OPTIONAL XRCISERTM PARTIAL STROKE TESTING DEVICE (PSTD)
Eliminate the possibility of spurious plant trips with the XRCISERTM Partial Stroke Testing Device which employs our proven Tandem Piston Technology. The QTRCO PSTD option is a remotely activated, pneumatic, physical travel stop that absolutely eliminates conceren regarding spurioous valve closures. Available on all QTRCO actuators.
The bottom line is, YOUR BOTTOM LINE.