ToughButterCup Posted October 10 Share Posted October 10 Usually MVHR ceiling vents are circular. But I am under direction from Mission Control (SWMBO) to find some rectangular ones. I've looked at ventilationmegastore, they don't do them I've asked BPC - they don't do them. The closest they do is a rectangular spigot (fixed) - but you can't 'tune' that (screw the valve in or out as needed) There are plenty of suppliers of fixed rectangular ceiling vents - but we need one with the normal screw -in-out- valve. Any know of a supplier who might be able to help? Link to comment Share on other sites More sharing options...
Adrian Walker Posted October 10 Share Posted October 10 I wouldn’t want to change the airflow pattern. You ideally want a smooth path from MVHR unit to the rooms. Link to comment Share on other sites More sharing options...
Mike Posted October 10 Share Posted October 10 You may need to come up with an alternative solution. Easiest would be to fit baffles in the pipes where they leave the manifold - I forget who makes them, but I'm sure someone will know. Otherwise maybe a DIY solution - for example cut some EPS offcuts to fit your rectangular spigot and put holes in them to achieve the flow you want. Link to comment Share on other sites More sharing options...
ToughButterCup Posted October 10 Author Share Posted October 10 I'll try that one on her @Adrian Walker, but I don't think it'll wash. She's got a way with her that's sometimes called 'quiet determination'. Brilliant when it works in your favour but ..... 1 Link to comment Share on other sites More sharing options...
G and J Posted October 10 Share Posted October 10 We intend to use Ergovent which are plastered in. Not sure if it’s too late for you for that or if you prefer surface mount. https://www.ventilationland.co.uk/en_GB/p/frameless-square-ventilation-valve-ø-125-mm/18709/?gad_source=1&gbraid=0AAAAAB0qKPCDyeAp9KFPi3NPY7szWhSMM&gclid=CjwKCAjw9p24BhB_EiwA8ID5Btq_n6a3GfORlhvHEiCKGcuqGAnenTP08SzNlKxntU6VtUF3h__QchoCb4EQAvD_BwE They do come with an adjustable baffle I believe. The square middle bit is held on by magnets so can easily be popped off to adjust flow. Link to comment Share on other sites More sharing options...
Mike Posted October 10 Share Posted October 10 28 minutes ago, G and J said: We intend to use Ergovent which are plastered in. Worth knowing that you don't get a coanda effect from flush vents - that is, the air from the vent will tend to flow downward, rather than dispensing along the ceiling. Some non-flush vents are designed to exploit that effect, others will no doubt benefit from it incidentally. That's not necessarily a problem but, for example, you might not want to place one directly over a bed, despite the low flow rate of MVHR. Link to comment Share on other sites More sharing options...
Adrian Walker Posted October 10 Share Posted October 10 3 hours ago, ToughButterCup said: I'll try that one on her @Adrian Walker, but I don't think it'll wash. She's got a way with her that's sometimes called 'quiet determination'. Brilliant when it works in your favour but ..... Just say that it might whistle with square vents, a man in Dorset said they might (LOL). Link to comment Share on other sites More sharing options...
BadgerBodger Posted October 10 Share Posted October 10 You could also manage air flow with a volume control damper in the ceiling void, however that generally requires access for commissioning or adjustment… Link to comment Share on other sites More sharing options...
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