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Flow restriction


bobh

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Our SW drainage requires a 0.4l/s flow restriction before the outfall.

Now to my mind this is as simple as a capped pipe exiting a silt trap chamber with an appropriately sized hole drilled in it to give the required flow.

Do we think this would be suitable or do I need to spend a few hundred pounds on a ready made product?

 

 

 

 

 

 

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14 hours ago, CivilEng2020 said:

I don't think there is a flow control with such low flow rate, I think the minimum you can get out there is 0.7 l/s. Who requires the outfall to be 0.4 l/s if I may ask?

Drainage layout was designed by our engineers along with the foundations. 

I've found a company that will supply a 0.4l/s restrictor which is essentially a silt trap with a cap on the exit pipe with an appropriately sized hole in it and then a filter fitted to it.

I'm pretty sure I could make the same myself but don't know if building inspector would ok it.

Scotland based if that makes a diffrrence

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