Controlled residential ventilation - Planning the positions for supply air / exhaust air

Does it make sense from a noise generation perspective to give each pipe its own valve?

Basically, no noise should occur at the room valves in a central controlled residential ventilation system. This is one of the advantages of the system compared to the decentralized version.

That's how it looks. The problem is then rather not one.

So you are saying that it makes no difference to use a valve with two pipes for, e.g., 40m³/h instead of two valves with one pipe each at 20m³/h? Because there is no noticeable noise anyway?

It is not only the number of pipes or the amount of air that matters, but the shape and size of the valve are the decisive factors. I can make a valve with one pipe and 10m³/h whistle wonderfully or one with two pipes and 60m³/h almost noiselessly.

OK, great ... These are the kinds of questions that I would like to leave to the planner. If he gets the requirement for "möglichst wenig Geräuschentwicklung," he will hopefully make the correct choice for these components. That helps, thanks!

If he gets the requirement of "as little noise as possible",

The requirement must be: "absolutely noiseless"!