2 months ago, I would have said, "no it's fine". Then I actually disassembled on of my valves. Despite rushing water through it at the end of a brew day and then some strike water through it for waste before mashing in, there was some gross stuff in there. I don't know if it did anything to any beers I've ever made, but now that I know it was in there, I'll be disassembling and cleaning them after each brew day.
My mistake, I am thinking of the 2 piece. I don't know what the benefits are to the 3 pieces other than being able to tear them down farther for cleaning.