Bob,
No matter which blaster you use, there are items that I would classify as consumables.
For the blast cabinet, it is usually just the ceramic nozzles that wear out.
But the pot is a different animal. Depending on what type of deadman is used, there are parts of the cutoff valve that can wear quite rapidly. I was making the mistake of not holding the deadman wide open while blasting. That made the cutoff shield wear real fast. And like the cabinet, the ceramic nozzle will wear with time.
Other than those, with normal maintenance and keeping water out of the lines, they should last many years no matter who manufactures them.
