Final control device has 2 pistons in common cylindrical body coupled by hydraulic volume in cylinder so axial deflection of first piston is converted into opposite axial deflection of second piston

摘要

The device has a control drive for carrying out a stroke motion, a first, pot-shaped piston (5), a second piston (11) coaxial to and protruding into the first piston, whereby both pistons are in a common cylindrical body (13) and are coupled by a hydraulic volume (15) in the cylinder so that axial deflection of the first piston is converted into an opposite axial deflection of the second piston, a stop element (31) with at least one journal (35) fed through the first piston's pot floor (7), that limits displacement of the second piston and that has a transfer element (3) coupled to the first piston.