the schematic I have after RSEP modification it's a bit different from the second figure you have. There are no control valves in mine,both of the classic and the NG.
The RSEP it's new system,with an added stby rudder PCU (and Stby yaw damper on the NG ) .
On before RSEP system's there was no stby rudder pcu,the stby system had acces to the same pcu as main hyd systems.
After RSEP modification , when the FFM trips , the stby hyd sys will become active automatically, and it will power the rudder through the Standby rudder PCU.
With automatic operation you will have stby power for the rudder and thrust reversers , and lights STBY RUD ON,Master caution and Flight controls will be illuminated.