Here is a close up of the DFV valve behind the main piston where you can see the thinness of the compression and rebound stacks on the DFV valve easily.
Here a close detailed view of the flow passages in yellow.
Here is a DFV shaft rod assembly we took apart to show what the real parts look like. The DSV valve is the dark grey part we are pointing at.
Here we loosened the shaft nut and spread out the DFV valve and the piston so you can see the flow passages into the center of the shaft and the DFV valve body and shims as they sit in an actual shock.