... but smooth interior is a good choice because you can create much slower bends than are typical for solid ducts.
... but smooth interior is a good choice because you can create much slower bends than are typical for solid ducts.
I used aluminium duct from BES (125mm). They also do a 150mm.
If you select "Installation" on the left hand (index) then "Ventilation" on the pop-up menu and finally "Ventilation, Ducting and Accessories". Skip all the rectangular stuff at the top and the circular ducting starts near the bottom of the page.
Hope this helps.
Mark.
You mean the stuff with a spiral wound wire?
I use this and it seems OK (it's well stretched out though).
Mark.
It absolutely trashes the airflow, though.
Christian.
I got all mine from
PVC693WH Connector for 150mm=D8(ID) pipe =A33.40 PVC696WH Pipe Fastener to suit 150mm=D8 pipe =A32.20 PVC690WH 90=B0 bend (PVC) to suit 150mm=D8(ID) pipe =A312.00 PVC1200-6WH 150mm=D8 rigid PVC pipe, 2m length =A310.50
Free delivery for orders >=A310.
(Note: 90=B0 bend looks quite pricey so I may have bought that elsewhere.. BES?)
I bought the outlet plate (gravity flaps) from Screwfix
I did quite a bit of searching round to get the best prices - admittedly this search was limited to the Internet (me being a lazy arse and all) and the local sheds. You might be able to pick up something cheaper from the 'specialists'.
Mathew
P=2ES. Incidentaly, looking at both the BES and FansDirect product codes it would appear that it's pretty much all manufactured by Domus
Thank you very much.
Amos
Mark wrote:
Oops - just realised I posted a load of symbols which may not come out correctly in everyone's newsreader. Any '=3DA3' is a pound sign, thus the
2m pipe us GBP10.50 etc.Sorry if this causes confusion...
Mathew
Is it any worse than a 90 degree bend though? What would be a better alternative?
Mark.
You can get types with a smooth internal bore. The cheaper ribbed types cause turbulence in the flow, dramatically increasing resistance.
Christian.
I haven't seen any like this. Are there any national/online suppliers?
Mark
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