Ubbink- Blauberg compatibility ?

[Post and beam]

Does anyone know if the Ubbink couplers and accessories are compatible with the Blauberg ducting.  Blauberg is half the price.

Alternatively, has anyone got first hand recommendation for the Blauberg kit

[Sparrowhawk]

If we only knew. I've tried to source offcuts of various ducting to test out connectors, with little success.

 

If forum members have 20cm+ of any ducting lying around - PM me and I'll test for compatibility.

[Nickfromwales]

Giving the sizes of the ducts would help  

I have offcuts of the green Ubbink 92mm (that's all I've used for the last 5+ years) if anyone needs internal/external diameter etc?

[Post and beam]

11 hours ago, Nickfromwales said:

Giving the sizes of the ducts would help

90mm in my case but i'd have thought comparing the same size across brands would have been self explanatory.

 

[Nickfromwales]

1 hour ago, Post and beam said:

90mm in my case but i'd have thought comparing the same size across brands would have been self explanatory.

 

If different brands do exactly the same size, yes. If not……..

[Post and beam]

Of course Nick. I'd hoped that there was already a body of knowledge within the walls of this forum that i was going to be able to Tap into.

[Jolo]

I was very interested in this topic too, as I wanted to mix manufacturers in our MVHR self-install (we went all-Ubbink, except for two through-wall vents, which Ubbink don't make).

 

So we successfully connected Ubbink 90mm (75mm internal) semi-flex ribbed green ducting to Vent-Axia UniflexPlus valve adaptors. The Ubbink duct just clicks into the Vent-Axia adaptor without problems, and there's no sign of air leakage. The end of the duct presses up tightly against the foam inserts inside the valve adaptor, which is what I assume prevents leakage.

 

I strongly suspect that other brands are also interchangeable. There's a company here in the Netherlands which sells their own brand of ducting and fittings, but they look identical to the ones sold by Blauberg. (From the searching I did, I think they're actually made by a company in Ukraine.) Anyway, this Dutch firm claims compatibility with Ubbink, Heatpex, Hybalans, Zehnder, Vent-Axia, and Burgerhout, which is a good list of manufacturers!

 

So I reckon it's likely that the ribbed semi-flex ducting from one brand is compatible with another brand's valve adaptors / plenums / etc.

[Mike]

3 hours ago, Jolo said:

I reckon it's likely that the ribbed semi-flex ducting from one brand is compatible with another brand's valve adaptors / plenums / etc.

Yes, that seems to be mostly the case, though it seems that there is a few mm difference in internal diameter between some. The only warning I've seen against mixing them is that the external corrugations are also a little different on some brands, so it's worth buying the sealing rings to match the duct. I didn't come across that until after I'd installed mine, which mixes them (fortunately without a apparent problem).

 

 

Edited October 15 by Mike

[Jolo]

Thanks for the additional info, @Mike!

 

Your advice about the correct sealing rings makes sense, although with the Vent-Axia vent adaptors the ring is inside the adaptor already, and is the same cross-section as the duct, which presses up tight against it, the ribs on the duct clipping into plastic hooks inside the mouth of the adaptor. That's probably the exception though, as everything else I've seen has some sort of ring that goes around the duct.

 

Do you remember which brands you mixed, and in what way?

[Mike]

1 hour ago, Jolo said:

Do you remember which brands you mixed, and in what way?

No, but I've looked it up. Generic 'own brand' green anti-static / anti-bacterial duct + Wolf sealing rings + Zehnder plenums (and everything else).