1. Make sure you have selected the pressure reducing valve in the top menu bar, drop-down list.
2. Increase the load to about 50% then increase the supply pressure until the load starts to lift. Observe how the pressure at the supply and cylinder are roughly the same.
3. Now lower the reducing valve setting until the cylinder starts to fall. Observe how the reducing valve has stopped the flow to the cylinder and the pressure at the cylinder is less than at the valve.