On 17/03/2020 15:44, Lee Nowell wrote:
Hi All,

I have fitted a new bathroom sink and the run to the main waste is
around 4m. It gurgles so decided to switch the existing bottle trap
for an anti-siphon one.

https://www.screwfix.com/p/mcalpine-...ite-32mm/37314



straight to ensure a good seal would be difficult 3. Fit an inline
anti-siphon valve and use the original trap. This is a bit of a pain
so would ideally not go down the route.

That's what I did when I redid bathrooms a little while back, just
fitting a tee into the waste pipe, and stuck an AAV on that, and then
used a normal trap on the basins.

--
Cheers,

John.

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