Their super S should have manganese dioxide (Pyrolox) in it or something similar, not any type of carbon. You have their version of an air pump system. Their backwash flow control (rate) will be too high for carbon and you'll backwash it up into the valve and out of the tank to drain.
Also, their tank may not allow swapping control valves. How does your valve mate with the tank.... screw into it or have dovetail fittings? And if it screws into the tank, are the threads industry standard 2.5" dia x 8 threads per inch?