This example model shows how to move a load with a cylinder. The directional control valve is used to connect the cylinder ends with either the pump or tank depending on the command. The pressure relief valve limits system pressure by opening when the pressure has reached a certain threshold. Pilot-operated check valves are used to reduce slippage.

Fig. 1 shows how the control valve moves to the upper state and then back to its center state. Fig. 2 shows how the check valves allow flow when the control valve is in its upper state. Fig. 3 shows how the cylinder moves when the control valve is in its upper state.


Fig. 1 Control valve opening state


Fig. 2 Flow through check valves. The difference is caused by asymmetric piston areas. The rod diameter to the left of the piston is zero.


Fig. 3 Load position

medium	Value: Oil() Type: Medium Description: Medium in the component