I have noisy valves that are keeping the owners awake. See photos. I need sound?

The best sound insulation I use is roxal safe and sound. It is not only a sound insulator but it's also fire resistant.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.