A multi-port valve for the Triton is installed to the filter by unthreading the bulkhead nuts on the old valve, removing the valve, then threading the new valve in place. You will have to cut the plumbing from the pump to the valve and from the valve to the pool return and then reconnect after the new valve is in place. Your backwash line may also have to be redone. It is worth the effort or expense if you have it done by a pool tech.