The working cylinder is divided into two chambers by a working piston. As the piston moves, oil flows from one chamber to the other through the integrated damping valves in the piston. The oil volume displaced by the piston rod as it descends fills the gas chamber which is cut off from the oil by the moving piston.

 

Advantages:

• Separation of oil and gas permits installation in any position

• Oil is prevented from foaming

• Small number of valves

• Good response through precise damping action, even at low amplitudes