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You have a cellar?!?! How deep? We have 1.5m of drop under our downstairs... will ask about anti poo devices too.
chrisbmx116-
Current place! Sorry, I wrote that confusingly.
I'm fairly sure given the ease with which surface water flooding occurs in Coppermill (I'm fairly sure that's what it was on the streets we were talking about, despite the Environment Agency saying it was fluvial) that if you had a cellar in Coppermill it would also function as a swimming pool...
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will ask about anti poo devices too.
You want one of these, or one like it, the right size for the pipe:
https://www.celticwater.co.uk/inline-backflow-valve-anti-flood-non-return-valve-110mm-160mm-200mm/As that one has a lever for total shutoff, you'd want an access hatch too, although it will still automatically stop the poo from flowing backwards when the lever is open.
My plan is to put one under the house when we do the new kitchen/downstairs loo but I don't know if this is compliant with building regs.
Did lol at:
Unfortunately we cannot accept returns for this product when it has been fitted.
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We have 1.5m of drop under our downstairs
Hold on what, that's loads. You mean in a suspended timber floor kinda way?
Fox
Ah. Look on the bright side - that's easier to fix than general low pressure in the area.
It could just be that your pipe is too narrow. Ours was but we could fix it easily because we've got a cellar.
There is a way to access it!
You could fit an anti-poo flood valve while you have everything up ;)