McAlpine Anti Cross-Flow and Rodent Barrier Valve For WC Toliet outlets - Color : Black

I struggled to source this at both B&Q and Screwfix (genuinely perplexed the staff in Screwfix) before finding it via Amazon and was good value. This worked perfectly for a rodent issue with a downstairs toilet leading directly into a sewer. The barrier valve worked perfectly and fit tightly within the sewer pipe, seems to have eradicated the problem and worked very well.

This looks to be good quality but sadly it does not fit! will be returning it. [

Looked good, fit the hole perfectly but unfortunately caused a blockage in our toilet as it kept catching on the lip and built up toilet roll so ended up having to bin it which I'm a bit gutted about. But certainly fit well initially as could be moulded to drain hole.

I've had replace our flexible toilet waste pipe 3 times within 2 weeks due to random holes appearing in different places on it. The problem we had actually was caused by a blocked shared sewer further along our street which has been resolved.I believe this product is a good idea to keep in place on the ground floor toilet to prevent any type of unwanted "back flow", especially when you have neighbours who flush anything and everything down which inevitably causes other problems.Easy to install, dummy-proof. Feels of equal quality to the original part on the pipe.

It's easy to fit but it becomes blocked if using toilet paper.

Excellent little device, we had a rat eating the flexible toilet waste pipe, it got through 3 until we put this in, it's been 3 weeks now and no sign of the rat, money well spent and would recommend everyone puts one in.

Very helpful during the past 6 months from installing.The price is high compared with the material.

No pest problem for 6 weeks although we also are using the sonic plug ins as well