This example model shows how to move and hold a load with a cylinder and a counter-balance valve. During lifting, the check valve component of the counter-balance valve allows flow. During lowering, high pressure on the pilot port opens the relief valve component of the counter-balance valve. When the load is not lowered or lifted, the check valve prevents the flow.

Fig. 1 shows how the cylinder is lifted and Fig. 2 shows how the check valve allows flow during the lifting.


Fig. 1 Load position


Fig. 2 Flow through the check valve

Reference

Industrial Hydraulics Manual, 5th ed., Maumee, OH: Eaton Hydraulics Training Services, 2008 p. 294.

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