halocline
Contributor
I am just repeating what the manufacturer is saying. Their seat saving orifice retracts away from the seat when not pressurized which prevents damage during storage.
I don't think you have to worry about it too much during a valve drill, but my personal opinion is that I wouldn't buy a regulator with this type of seat saver anyways because it's less convenient to soak them. I want to be able to soak my regs unpressurized for extended periods of time after saltwater use.
A well designed balanced 2nd stage takes most of the force off the seat in storage anyways. That's because the majority of the force pushing the seat against the orifice is provided by air in the balance chamber.
Then again I know a very busy cave sidemount instructor that uses atomics and she does several valve drills every week, and she's never had a problem. Probably neither would you.