I think you are the one that is mistaken. Rapid rinse is NOT a backwash--rapid rinse is down flow while backwash is upflow. A 5 cycle valve provides 1. Backwash; 2. brining/slow rinse; 3. Rapid rinse; 4. brine refill; 5. Service
If you go to page 44 of the manual for the 9000 valve you will see that rapid rinse (also known as settling rinse) is downflow. http://www.pentairwatertreatment.com...al%2040944.pdf
I expect an apology for your incorrect statement that my post was incorrect.