That system utilizes a combination valve. No other additional valves need to be added. Just make sure you have the lines connected to the proper ports on the combi valve. Typically there are two ports at the front of the valve for the front brakes, and one out the rear for both rear brakes.
Make sure the pushrod between the booster and master cylinder is adjusted properly with minimal clearance, and that the pedal is installed with enough travel to bottom out the master cylinder.
Does the pedal pump up indicating that there is still air in the system?