The point is that the valve is designed to be twisted off and replaced with the same type of valve. No damage to the wall. I have 11 of the Accor push-pull valves and none of them have ever leaked. The hoses seem to be in perfect condition with no need to replace them every 5 years. Yes, these are cheap plastic valves, but they are always open, except in the rare occasion when you need to close one. If you are constantly opening and closing the valves, you can expect them to start leaking. But, any type of valve can start to leak. I don't see an issue here.
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