See this image and the same in the attached file. The wires that go to the valves have the valve numbers on them (for identification in the controller) and the valves have the manufacturer's part number on them (like CS-2105-20)
If you have a leak, it is most often the VENT valve (5) or a down valve (3 or 4) that is leaking.
For Fluke part numbers (from valve numbers and manufacturer part numbers) contact the Fluke Pressure Calibration Technical Support team at pressuresupport@flukecal.com or create a new Case at my.fluke.com/