Anyone done MVHR with slot (long thin) outlets.

[MikeSharp01]

We are just getting sorted to run the MVHR pipework and while I had defaulted to round outlets I saw this

 

And wondered if anybody had tried MVHR with slot outlets and if so what was the experience like?

 

[RandAbuild]

Now they are very neat!

 

I have vent envy ?

[Dreadnaught]

I think they are termed "linear diffusers". I like them too.

 

Here's an example:

 

https://s3-eu-west-1.amazonaws.com/monodraught/downloads/literature/linear slot diffusers.pdf

Edited March 6, 2020 by Dreadnaught

[Dreadnaught]

I see they have veins within but it looks like they are a form non-return valve. I wonder how a linear diffuser could be selectively attenuated for the balancing an MVHR system, either supply or extract.

Edited March 6, 2020 by Dreadnaught

[MikeSharp01]

10 minutes ago, Dreadnaught said:

I wonder how a linear diffuser could be selectively attenuated for the balancing an MVHR system, either supply or extract.

I was wondering that as well there must be a way and your link sort of helps but it looks like it might be tough none the less.

[Dreadnaught]

11 minutes ago, MikeSharp01 said:

I was wondering that as well there must be a way and your link sort of helps but it looks like it might be tough none the less.

 

I think it is possible to locate the flow control away from the diffuser, presumably near the manifold, by using duct butterfly valves. This could be a solution.

 

I wonder if anyone has used duct valves for attenuation rather than diffusers. 

Edited March 6, 2020 by Dreadnaught

[Adam2]

Looks very nice, think that might be one where my wife says yes until she sees the cost ?

[Dreadnaught]

Resurrecting this old thread.

 

The MVHR extract vents in my kitchen either need to go though a steel beam or can be a linear diffuser in a wall without needing cut a hole in the beam. 

 

But I am still not sure whether linear diffusers are good as extract terminals. I wonder, has anybody used a linear diffuser in their MCHR system?

 

@MikeSharp01, did you use one in the end?